Cars with the most electrical system problems

Ranking of the cars we have analysed by the severity and frequency of their documented electrical system faults. Each fault links to its page: symptoms, cost, how to check it and sources.

Of the 522 cars we have analysed, 280 have documented electrical system faults. The one with the most accumulated risk is the Alfa Romeo Tonale, because of “faulty wiring under the floor: loss of lights, power steering and brake servo (tonale 2022-2023)”; it is followed by the Land Rover Range Rover Evoque II and the BMW Serie 4 G22. For 242 we have found no documented electrical system faults.

Reviewed on 30 October 2026How we work

Rank 1
Alfa Romeo Tonale
Compact SUV · 4 electrical system faults
5.0 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemFaulty wiring under the floor: loss of lights, power steering and brake servo (Tonale 2022-2023)Yes: a Safety Gate alert from March 2023 (campaign 6574) covers 607 Tonales built between 15 September 2022 and 13 February 2023, whose wiring under the floor can knock out the lights, hazard lights, power steering and brake servo.
- Critical severityFrequency: OccasionalElectrical systemPoorly tightened nuts on the 12 V charging cable and high-voltage connectors (plug-in hybrid Tonale)Yes: campaign 6683 (Safety Gate alert 42/2023) covers Tonales built from 15 September 2022 to 26 August 2023 because nuts on the 12 V charging cable, the earth cables and the high-voltage connectors are missing or under-tightened, with a risk of overheating and fire. The DVSA limits it to plug-in hybrids.
- Critical severityFrequency: OccasionalElectrical systemFaulty 48 V battery valve: risk of loss of function and overheating (mild-hybrid Tonale)Yes: Safety Gate alert 28/2023 (campaigns 6623 and 6624) covers mild-hybrid Tonales built between 11 November 2022 and 6 February 2023: the pressure build-up valve in the 48 V battery may be faulty and, if water gets in, cause loss of function and overheating. It also includes the Fiat 500X and the Fiat Tipo.
- Medium severityFrequency: OccasionalElectrical system12 V battery drained by standby drain (Tonale)It is one of the most cited complaints in Tonale owner testimonials: 6 of the 29 collected by fiches-auto mention the 12 V battery, with one case of 15 interventions in two years. The cause that source points to is usually a parasitic drain from modules that don't go to sleep, rather than the battery itself.
Rank 2
Land Rover Range Rover Evoque II
Compact SUV · 3 electrical system faults
5.2 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemPlug-in hybrid inverter software fault: combustion engine may not restartOn plug-in hybrid Evoques, an inverter software fault (EPICB) can stop the combustion engine restarting once the high-voltage battery runs down in electric mode, and the car loses traction without warning. Recall D035 is corrected with a software update.
- Critical severityFrequency: OccasionalElectrical systemFire risk in the high-voltage traction battery of plug-in hybridsIn 2026 the British DVSA published a recall because the high-voltage traction battery of some plug-in hybrid Evoques has overheated, with smoke or fire under the rear of the car. The root cause is not yet known; batteries are being inspected and those at risk replaced.
- High severityFrequency: OccasionalElectrical system48 V electrical overload can damage the mild hybrid MOSFET transistorIn 2020 Land Rover recalled Evoques with a 48 V electrical system because an overload can damage the system's MOSFET transistor. The DVSA says it is corrected with a software update; fiches-auto links the fault to a risk of fire from the DC-DC converter.
Rank 3
BMW Serie 4 G22
Saloon · 3 electrical system faults
5.4 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemStarter motor corrosion from water ingress (fire risk)Yes: in September 2025 BMW recalled 4 Series cars (G22, G23 and G26 among them) because the starter motor can let in water and corrode; in the worst case, a short circuit overheats the part and can cause a fire. The press reports that replacing the starter is free of charge.
- Critical severityFrequency: OccasionalElectrical systemWear of the RSW22 starter motor relay contact (fire risk)Yes: in 2026 BMW extended the starter motor recall because, in the RSW22 model with a water-resistant reinforced relay, the magnetic contact wears and builds up deposits, which can cause false starts or a short circuit with fire risk. It affects the 4 Series from 2020, and the starter is replaced with one from a different supplier.
- Medium severityFrequency: OccasionalElectrical system48 V battery cables of the belt-driven starter generator not securely fastenedIn January 2021 BMW carried out a recall in the United Kingdom on several models, including the 4 Series built between August and September 2020, because the battery cables of the 48 V belt-driven starter generator might not be securely fastened. The remedy is to inspect the bolted connection and retighten it if necessary.
Rank 4
BMW X5 G05
Mid-size SUV · 2 electrical system faults
5.7 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemOverheating of the starter motor and its relay, with a risk of fireSince 2024 BMW has launched several campaigns that include the X5 over the starter motor: insufficient software protection, electrical contacts that overheat, a relay that corrodes through water ingress and a relay with deposits from contact wear. In the worst case there can be a short circuit and a fire, while driving or shortly after parking.
- Critical severityFrequency: OccasionalElectrical systemImpurities in the high-voltage battery cells of the plug-in hybrid X5The plug-in hybrid X5 built between January 2020 and February 2021 had a campaign over production impurities in the high-voltage battery cells: they can cause an internal short circuit with the battery fully charged and, with it, a fire. The battery is tested and the cell modules that need it are replaced.
Rank 5
Mercedes-Benz CLS C257
Saloon · 2 electrical system faults
5.7 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemGearbox wiring harness connector with moisture: risk of short circuit and fireYes: the Mercedes campaign (codes 1595003 and 1595004; Safety Gate alert A12/01979/24) covers 57,988 vehicles worldwide — E-Class, E-Class Coupé/Cabriolet, CLS and AMG GT 4-door built between 7 June 2017 and 20 April 2022 — because of a poorly processed gearbox harness connector that can let moisture in.
- Critical severityFrequency: OccasionalElectrical system48 V earth cable bolt poorly secured: risk of fireYes: Safety Gate alert A12/00463/24 (Mercedes code 5491318) affects 75,159 vehicles worldwide — CLS, E-Class and AMG GT 4-door built from 1 July 2021 to 6 April 2023 — because the 48 V earth cable bolt, in the engine bay, may be poorly secured and overheat.
Rank 6
Mercedes-Benz GLE V167
Mid-size SUV · 2 electrical system faults
5.7 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical system48 V earth cable under the passenger seat insufficiently tightened: risk of overheating and fireMercedes recalled 340,956 GLE and GLS models built between 2017 and 2023 because the 48 V earth connection under the passenger seat may have been left loose during assembly: electrical resistance rises, the area heats up and there is a risk of fire.
- Critical severityFrequency: OccasionalElectrical system12 V connection bolts (wiring and earth under the seats) with insufficient tightening torqueMercedes recalled 33,825 plug-in hybrid GLE models over a bolt on the 12 V wiring harness tightened with insufficient torque, and 399 2021 GLE models over a loose bolt on the 12 V earth cable under the driver's seat: resistance can increase, the area can heat up and there is a risk of fire.
Rank 7
Fiat Scudo III
Van and combi · 2 electrical system faults
6.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemBattery positive cable routed badly next to the starter motor: risk of electrical arcing and fireAccording to car-recalls.eu (July 2026), Germany's KBA lists a recall of 2,076 Scudos built between 15 October 2025 and 22 January 2026: the battery positive cable may rub against the starter motor housing, causing electrical arcing and a short circuit. It is protected with tape and corrugated tubing.
- High severityFrequency: OccasionalElectrical systemE-Scudo high-voltage battery software fault: it may lose «Ready» mode and drive powerA Safety Gate alert (SR/01455/25) covers electric Scudos built between 10 January and 22 February 2023, together with the e-Doblò (582 vehicles in total): faulty high-voltage battery software can leave the car without «Ready» mode, without drive power, or with the motor cutting out suddenly while driving.
Rank 8
Mercedes-Benz Clase E W214
Saloon · 2 electrical system faults
6.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical system80 A fuse and fuse box incorrectly reworked on 2023 E-Classes, with risk of losing driveYes: two Safety Gate alerts (A12/00939/24 and SR/02431/25) cover E-Classes built in 2023 because of a faulty 80 A fuse and a fuse box incorrectly reworked, which could cause loss of drive, brake retarder or instrument cluster failure, and a fire.
- High severityFrequency: OccasionalElectrical systemGearbox wiring harness routed incorrectly and rubbing against the front axle on 4MATIC E-Classes (December 2022 to February 2024)Yes: a KBA recall (13712) covers all-wheel-drive W214 E-Classes built between December 2022 and February 2024 (4,781 cars worldwide) because the gearbox harness can rub against the front axle and cause loss of drive without warning.
Rank 9
Nissan NV200
Van and combi · 2 electrical system faults
6.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemFaulty spring in the ignition switch on the 2017 Nissan NV200Yes: Nissan recalled NV200s built between 30 March and 29 May 2017 because the internal spring of the ignition switch may have a surface defect and could switch off the engine while the car is moving. The switch is inspected and replaced if necessary.
- High severityFrequency: OccasionalElectrical systemStart button that does not return to its position on the 2013-2014 e-NV200Yes: in 2015 a recall was notified to Safety Gate because the start button on e-NV200s produced in late 2013 and early 2014 could stay pressed without returning to its position; if the car was driven like that, the emergency stop function could switch off the engine.
Rank 10
Toyota Hilux VIII
Mid-size SUV · 2 electrical system faults
6.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemFaulty auxiliary battery terminal: loss of power steering assistance and fire riskA Safety Gate alert from March 2023 includes the Hilux among eight Toyota models built from 24 October 2021 to 26 October 2022: the auxiliary battery terminal may be faulty, switch off power steering assistance and overheat at low speed, with a fire risk.
- High severityFrequency: OccasionalElectrical systemMain engine bay harness clip poorly fixed next to the steering columnAn August 2017 European alert affects 2016–2017 Hilux cars built in South Africa: a clip holding the main engine bay harness, behind the steering column shaft, may not be properly fixed and can let the wiring rub against the shaft; damage to the harness could cause the engine to stall.
Rank 11
Mercedes-Benz CLA C117
Saloon · 3 electrical system faults
6.4 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemRecall for an overloaded starter motor current limiter, with fire riskYes: the starter motor's current limiter can become overloaded and overheat to the point of setting fire to nearby components; the campaign covers CLAs built between February 2014 and February 2017.
- High severityFrequency: RareElectrical systemRecall for incorrectly fitted fuses on 2014 unitsYes: incorrectly installed fuses could stop the front passenger seat occupancy sensor, the airbag indicator, the instrument cluster and the windscreen wipers from working; it affected only CLAs built between September and November 2014.
- Low severityFrequency: OccasionalElectrical systemFlat or faulty 12 V battery with multiple warnings in the instrument clusterAccording to fiches-auto.fr, 5 of 103 CLA reports cite the battery, and the page notes that a weak auxiliary battery can trigger numerous error messages at once.
Rank 12
Polestar 2
Saloon · 3 electrical system faults
6.6 out of 10electrical system score
- High severityFrequency: OccasionalElectrical systemElectric motor management software fault causing loss of power while drivingWikipedia reports that in October 2020 all Polestar 2 cars were recalled over a software defect that caused a loss of power while driving. The fix was a manual update at the workshop, as there were no over-the-air updates yet.
- High severityFrequency: OccasionalElectrical systemElectric motor inverter fault in the first unitsWikipedia notes that in October 2020 there was also a recall of all Polestar 2s for faulty inverters. The source does not explain the symptom, the cause or the correction, so the technical detail remains undocumented. Driving Electric puts the campaign at 4,586 cars in Europe.
- Medium severityFrequency: RareElectrical systemFaulty high-voltage coolant heater (HVCH) on the first unitsThe first Polestar 2 units had a service campaign to replace the high-voltage coolant heater, which warms the cabin and the battery; in the UK it affected 138 cars.
Rank 13
Mercedes-Benz Clase C W206
Saloon · 2 electrical system faults
6.8 out of 10electrical system score
- High severityFrequency: OccasionalElectrical systemWiring harness with a faulty connection that can cause loss of propulsionMercedes-Benz has recalled C-Class W206 units because an incorrect connection in a wiring harness can generate high electrical resistance and, in the worst case, a sudden loss of propulsion.
- High severityFrequency: OccasionalElectrical systemIncorrectly installed fuse box that can affect critical systemsMercedes-Benz has recalled C-Class W206 units built in 2023 because an incorrect installation of the fuse box can cause power cut-outs or leave critical vehicle systems without adequate protection.
Rank 14
Škoda Elroq
Compact SUV · 3 electrical system faults
6.8 out of 10electrical system score
- High severityFrequency: OccasionalElectrical systemHigh-voltage battery protection fault that immobilises the carFiches-auto describes how the fuses, contactors or protection computers of the high-voltage battery can enter safe mode and leave the Elroq unable to drive or charge (one case involved a fuse at 7,000 km). CarWiki cites around 10 owners of the 2027 model year with faults right after charging, caused by a faulty battery controller. Repairs can take weeks while parts are awaited.
- Medium severityFrequency: OccasionalElectrical system12 V electrical system and battery fault on start-upAbout 20 Elroq owners, according to CarWiki since May 2025, see an electrical or 12 V battery fault warning appear on start-up and cannot engage a gear; some cars were towed. Fiches-auto records another car immobilised at 10,938 km.
- Medium severityFrequency: OccasionalElectrical systemKeyless locking and foot-sensor tailgate faultsAbout 25 owners say the Elroq does not lock when walked away from, or that unlocking from the handle fails. The foot-sensor tailgate first would not open and, from software 5.6, opens by itself and has closed on people. Workshops often find no fault, and updates rarely help.
Rank 15
Land Rover Discovery Sport
Mid-size SUV · 2 electrical system faults
7.0 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemPlug-in hybrid inverter software fault: the petrol engine may fail to restartOn plug-in hybrid Discovery Sports, an inverter software fault can stop the combustion engine restarting when the high-voltage battery runs down in electric mode, and the car loses drive without prior warning. Campaign D035 is corrected with a software update.
- Low severityFrequency: RareElectrical systemPower tailgate that doesn't open or close smoothlyA buying guide lists the power tailgate, which does not open or close smoothly, among the Discovery Sport's electrical problems, and one owner says it used to sag. There are few documented cases and no official campaign.
Rank 16
Citroën C5 Aircross
Compact SUV · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: CommonElectrical systemOverheating and water ingress in the high-voltage battery (Hybrid versions)The plug-in Hybrid versions of the C5 Aircross built between January 2020 and the end of 2022 have been the subject of several successive manufacturer campaigns over a risk of the high-voltage battery overheating and, in another related campaign, over possible water ingress into its casing.
Rank 17
Opel Grandland I
Compact SUV · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: CommonElectrical systemRisk of overheating and fire of the high-voltage battery on plug-in hybrid versions (2019-2022)The plug-in hybrid versions of the Grandland X built between 2019 and 2022 have been the subject of several successive campaigns - first a software update and then physical replacement - over the risk of overheating and fire of the high-voltage battery.
Rank 18
Peugeot 3008 II
Compact SUV · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: CommonElectrical systemBattery overheating risk in Hybrid versionsThe manufacturer has called in around 43,000 Peugeot 3008 II Hybrid and Hybrid4 cars built between 2019 and 2022 to be checked at the dealer for a risk of the high-voltage battery overheating.
Rank 19
Peugeot 508 II
Saloon · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: CommonElectrical systemHigh-voltage battery safety campaigns (Hybrid version)The Hybrid version of the Peugeot 508 II has had three separate safety campaigns for the high-voltage battery between 2021 and 2024 (short circuit, water ingress and a manufacturing defect), all with a risk of overheating or fire.
Rank 20
Audi A4 B9
Saloon · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemRisk of short circuit and fire due to moisture in electrical componentsAudi recalled A4 B9 units built between May 2017 and March 2020 because moisture can seep into an electrical component and cause a short circuit, with a risk of the vehicle catching fire.Repair: €0
Rank 21
Audi Q5 II
Mid-size SUV · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemRisk of short circuit and fire from moisture in electrical componentsAudi recalled Q5 II cars built between May 2017 and March 2020 because moisture can get into an electrical component and cause a short circuit, with a risk of the vehicle catching fire.Repair: €0
Rank 22
Audi Q7 4M
Mid-size SUV · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemOverheating of the high-voltage battery cell modules when charging (plug-in hybrids)In October 2025 Audi recalled 18,652 Q7, Q8 and A8 vehicles with a high-voltage battery (built from August 2019 to July 2024) over a fire risk when charging. The German press links it to the plug-in hybrids, and a software update fixes it.
Rank 23
Audi Q8
Mid-size SUV · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemOverheating of the high-voltage battery cell modules when charging (plug-in hybrids)In October 2025 Audi recalled 18,652 Q7, Q8 and A8 vehicles with a high-voltage battery (built from August 2019 to July 2024) over a fire risk when charging. The German press links it to the plug-in hybrids, and a software update fixes it.
Rank 24
BMW Serie 3 G20
Saloon · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical system2025 campaign for corrosion of the starter motor relay (risk of fire)Yes: in September 2025 BMW recalled, among other models, the 2019 to 2021 330i (G20) because the starter motor relay can corrode, overheat and cause a short circuit with a risk of fire even when the car is parked.
Rank 25
BMW Serie 5 G30
Saloon · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemTwo successive campaigns over a fire risk in the starter motor relay (2025 and 2026)Yes: BMW recalled the 5 Series G30 twice for the same risk in the starter motor relay - which can corrode or build up deposits, overheat and cause a short circuit with a risk of fire - first in September 2025 and again in July 2026 for more recent cars.
Rank 26
BMW X1 U11
Compact SUV · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemWater ingress into the body control unit (BCP) through the panoramic roof drainsIn 2022 BMW recalled 2,958 X1 and iX1 models built between June and September 2022 because the panoramic roof drains could be cracked and let water into the body control unit, with a risk of electrical faults and even fire. The tubes are checked and repaired.
Rank 27
BMW X3 G01
Mid-size SUV · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemTwo successive campaigns for a fire risk in the starter motor relay (2025 and 2026)Yes: BMW recalled the X3 G01 twice for the same risk in the starter motor relay, which can corrode or build up deposits, overheat and cause a short circuit with a risk of fire, first in September 2025 and again in July 2026 for more recent cars.
Rank 28
BMW X6 G06
Mid-size SUV · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemOverheating of the starter motor and its relay, with a risk of fireSince 2025 BMW has launched several campaigns that include the X6 over the starter motor: electrical contacts that overheat, a relay that corrodes through water ingress and a relay with deposits from contact wear. In the worst case there can be a short circuit and a fire, while driving or shortly after parking.
Rank 29
BMW X7 G07
Mid-size SUV · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemOverheating of the starter motor and its relay, with a risk of fireSince 2024 BMW has launched several campaigns that include the X7 over the starter motor: insufficient software protection, electrical contacts that overheat, a relay that corrodes through water ingress and a relay with deposits from contact wear. In the worst case there can be a short circuit and a fire, while driving or shortly after parking.
Rank 30
Citroën C4 III
Compact · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemFire risk from the small gap between the particulate filter and the 48 V starter-generator (mild-hybrid version)In the 48 V mild-hybrid versions of the C4 III (1.2 PureTech 136 hp with e-DCS6 gearbox) built between October 2023 and January 2026, the gap between the petrol particulate filter pipe and the 48 V starter-generator may be less than 10 mm, which poses a fire risk in the engine bay.
Rank 31
Citroën C4 X
Compact · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemFire risk from insufficient clearance between the petrol particulate filter and the 48 V starter-generatorYes: on petrol C4 X cars built between 25 October 2023 and 12 January 2026 the particulate filter pipe sits less than 10 mm from the protective cap of the 48 V starter-generator and, in damp conditions, an electric arc can occur with a risk of fire. Recall published on Safety Gate in March 2026.
Rank 32
Cupra León
Compact · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemDefective fuse in the high-voltage battery of the Cupra Leon e-Hybrid (risk of short circuit and fire)Yes: Seat recalled 16,210 Cupra Leon and Formentor e-Hybrids built between 10 October 2020 and 28 February 2022, because a defective fuse can cause an electric arc and a fire in the event of a short circuit. The fix is to install an insulating sheet.
Rank 33
Ford Transit
Van and combi · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemWiring damaged by insufficient clearance from the transmission housing: power steering failure and fire riskRecall 25SC5 covers 9,121 Transits built between 10 May 2024 and 11 November 2025: the wiring harness sits too close to the transmission housing and can be damaged, with a risk of power steering failure and a fire caused by a short circuit.
Rank 34
Honda Civic XI
Compact · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemNegative terminal of the Civic e:HEV's lithium-ion battery, with risk of electrolyte leak and fireYes: Honda recalled (campaign 6LB) Civics built between June 2022 and January 2023 because the negative terminal of the lithium-ion battery can degrade through contact with the electrolyte and break, leaving the car stranded or, if the battery is still live, causing sparks and a fire. The battery module is replaced.
Rank 35
Hyundai i20 I
Small family car · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemThe 12-volt socket can overheat and cause a fire when used with the tyre repair kit compressorYes: Hyundai recalled 16,765 i20 cars built between 1 January 2008 and 31 December 2012 in Germany because a poorly secured 12-volt socket can overheat and cause a fire when the compressor from the tyre repair kit is used, according to gebrauchtwagenberater.de.
Rank 36
Kia Optima IV
Saloon · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemFault in the high-voltage battery management system of the plug-in hybrid OptimaYes: the British DVSA recorded in 2018 a recall (reference 181019) of 398 plug-in hybrid Optimas built between October 2015 and September 2017: the high-voltage battery may intermittently disconnect the electric motor while driving, causing a sudden loss of power. The battery management system is replaced.
Rank 37
Mazda 6 III
Saloon · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemRecall over DC-DC converter failure with fire riskYes: an electronic component in the DC-DC converter could fail and, in the worst case, burn; the 2013 European alert covers Mazda6 GJ cars built between July 2012 and March 2013.
Rank 38
Mazda MX-5 IV
Saloon · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemDC/DC converter control unit fault with risk of short circuit and fireA 2018 Safety Gate alert covers MX-5 ND models built between August 2014 and April 2017: the DC converter control unit could fail, cause a short circuit and damage the converter, with a risk of fire. It is a precautionary recall; check the chassis number at the official service centre.
Rank 39
Mercedes-Benz Clase B W246
MPV · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemOverloaded starter motor current limiter, fire riskOn cars from the 2014 to 2017 model years, an overloaded starter motor current limiter can set nearby components on fire, the reason for a manufacturer campaign.
Rank 40
Mercedes-Benz GLA H247
Compact SUV · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemRisk of short circuit and fire in the high-voltage battery (plug-in hybrid version)On the GLA 250 e (plug-in hybrid) built between 20 February 2021 and 23 January 2024, a short circuit in the high-voltage battery can cause a fire, according to a manufacturer campaign reported by a French reliability site.Repair: €0
Rank 41
Mercedes-Benz GLC X254
Mid-size SUV · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemIncorrectly reworked fuse box: contact faults, wrong fuses and fire riskYes: Safety Gate alert SR/02431/25 (codes 8297014 and 8297015) affects 4,652 vehicles worldwide across nine model series, including the GLC, built between 31 January and 17 October 2023: a badly reworked fuse box can lose contact or carry fuses of the wrong rating and leave key systems without function.
Rank 42
Mercedes-Benz SLK R172
Saloon · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemIgnition switch backup cable poorly connected: the electric parking brake and P position may not workYes, there was a campaign: on some 2015 SLKs the backup cable that powers the ignition switch may have been poorly connected, so if the main battery failed, neither the electric parking brake nor the P position of the gearbox would engage, and the car could roll away.
Rank 43
Opel Astra H
Compact · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemFire risk from the heated windscreen washer nozzles (2004-2006)Yes: according to the KBA, on Astra Hs built between 2004 and 2006 defective heated windscreen washer nozzles can cause a vehicle fire. Opel recalled these cars; Gebrauchtwagenberater.de documents the same defect, with identical years, on the Opel Zafira B.
Rank 44
Opel Astra J
Compact · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemFire risk from a short circuit in the radiator cooling fanYes: in 2014 Opel recalled around 60,000 Astra J/GTC cars from 2010-2012 because a deviation in the electrical design could cause a short circuit if the cooling fan seized, with a risk of fire.
Rank 45
Opel Crossland
Small SUV · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemRisk of short circuit from chafing of the electrical wiring harness (units up to 2018)fiches-auto.fr documents a campaign on Crossland X units built up to 2018 in which the electrical wiring harness chafing against another component could cause a short circuit and, in the worst case, a fire.
Rank 46
Opel Frontera
Small SUV · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical system48 V belt alternator-starter cap in contact with the particulate filter pipe on the Frontera: fire riskYes: the KV7 campaign covers Frontera built between July 2024 and December 2025 because the petrol particulate filter pipe may touch, or come within 10 mm of, the cap on the 48 V alternator-starter; water could cause an electric arc and fire.
Rank 47
Opel Zafira Life
Van and combi · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemFaulty high-voltage wiring harness with fire risk (March–April 2022)In October 2022 Opel recalled 203 vehicles (Zafira Life and Vivaro) built between 15 March and 30 April 2022, because an unsuitable high-voltage harness could overheat and burn out the contacts of a connector, with a risk of fire (recall O7P).
Rank 48
Porsche Taycan
Saloon · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemInsufficient sealing of the high-voltage battery: liquid ingress (recall APB2)Yes: the 2023 recall APB2 affects Taycans built between September 2022 and August 2023 (4,755 cars in the UK), because insufficient sealing can let liquid into the high-voltage battery. It is checked for leaks and the battery is replaced if necessary; the press links it to a fire risk.
Rank 49
Toyota Aygo X
City car · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemFaulty auxiliary battery terminal: loss of power steering assistance and fire riskA Safety Gate alert from March 2023 includes the Aygo X among eight Toyota models built from 24 October 2021 to 26 October 2022: the auxiliary battery terminal may be faulty, switch off power steering assistance and overheat at low speed, with a risk of fire.
Rank 50
Volkswagen Jetta VI
Compact · 1 electrical system fault
7.1 out of 10electrical system score
- Critical severityFrequency: OccasionalElectrical systemIncorrectly fitted starter motor switch spring: risk of overheatingYes: a 2018 European alert (A12/0332/18) covers units built in 2011 because a spring in the starter motor's magnetic switch may have been fitted incorrectly, with a risk of overheating and fire. It affects many Volkswagen Group models, including the Jetta.
Rank 51Volkswagen Multivan T7 · 1 electrical system fault7.1 out of 10
Rank 52Volkswagen Sharan II · 1 electrical system fault7.1 out of 10
Rank 53Volkswagen Touareg II · 1 electrical system fault7.1 out of 10
Rank 54Volkswagen Touareg III · 1 electrical system fault7.1 out of 10
Rank 55Volvo S60 III · 1 electrical system fault7.1 out of 10
Rank 56Volvo XC40 · 1 electrical system fault7.1 out of 10
Rank 57Alfa Romeo Stelvio · 2 electrical system faults7.1 out of 10
Rank 58BMW Serie 3 E46 · 2 electrical system faults7.1 out of 10
Rank 59Mercedes-Benz Clase C W205 · 2 electrical system faults7.1 out of 10
Rank 60Mitsubishi Outlander III · 2 electrical system faults7.1 out of 10
Rank 61Nissan Juke II · 2 electrical system faults7.1 out of 10
Rank 62Škoda Enyaq · 2 electrical system faults7.1 out of 10
Rank 63Ford Focus II · 2 electrical system faults7.3 out of 10
Rank 64Opel Astra G · 2 electrical system faults7.3 out of 10
Rank 65Volkswagen Golf V · 3 electrical system faults7.4 out of 10
Rank 66Hyundai i30 I · 2 electrical system faults7.5 out of 10
Rank 67Renault Talisman · 2 electrical system faults7.5 out of 10
Rank 68Seat Alhambra II · 2 electrical system faults7.5 out of 10
Rank 69Suzuki Swift IV · 2 electrical system faults7.5 out of 10
Rank 70BMW Serie 5 E60 · 2 electrical system faults7.7 out of 10
Rank 71Fiat Panda II · 3 electrical system faults7.8 out of 10
Rank 72Peugeot 207 · 3 electrical system faults7.8 out of 10
Rank 73BMW Serie 1 E87 · 1 electrical system fault7.9 out of 10
Rank 74BMW Serie 1 F20 · 1 electrical system fault7.9 out of 10
Rank 75BMW Serie 3 E90 · 1 electrical system fault7.9 out of 10
Rank 76BMW Serie 6 E63/E64 · 1 electrical system fault7.9 out of 10
Rank 77Fiat Doblò III · 1 electrical system fault7.9 out of 10
Rank 78Ford Focus IV · 1 electrical system fault7.9 out of 10
Rank 79Ford Kuga I · 1 electrical system fault7.9 out of 10
Rank 80Ford Mustang Mach-E · 1 electrical system fault7.9 out of 10
Rank 81Ford S-Max II · 1 electrical system fault7.9 out of 10
Rank 82Ford Transit Custom · 1 electrical system fault7.9 out of 10
Rank 83Honda CR-V II · 1 electrical system fault7.9 out of 10
Rank 84Honda CR-V V · 1 electrical system fault7.9 out of 10
Rank 85Hyundai Kona I · 1 electrical system fault7.9 out of 10
Rank 86Hyundai Veloster · 1 electrical system fault7.9 out of 10
Rank 87Infiniti Q50 · 1 electrical system fault7.9 out of 10
Rank 88Jeep Wrangler JL · 1 electrical system fault7.9 out of 10
Rank 89Kia Ceed III · 1 electrical system fault7.9 out of 10
Rank 90Kia Sportage IV · 1 electrical system fault7.9 out of 10
Rank 91Lexus IS II · 1 electrical system fault7.9 out of 10
Rank 92Mazda 2 II · 1 electrical system fault7.9 out of 10
Rank 93Mercedes-Benz GLS X167 · 1 electrical system fault7.9 out of 10
Rank 94Mercedes-Benz Sprinter 906 · 1 electrical system fault7.9 out of 10
Rank 95Mercedes-Benz Vito W639 · 1 electrical system fault7.9 out of 10
Rank 96Mitsubishi Lancer · 1 electrical system fault7.9 out of 10
Rank 97Renault Clio II · 1 electrical system fault7.9 out of 10
Rank 98Renault Espace V · 1 electrical system fault7.9 out of 10
Rank 99Renault Master III · 1 electrical system fault7.9 out of 10
Rank 100Renault Mégane II · 1 electrical system fault7.9 out of 10
Rank 101Renault Scénic II · 1 electrical system fault7.9 out of 10
Rank 102Subaru Forester III · 1 electrical system fault7.9 out of 10
Rank 103Subaru Forester IV · 1 electrical system fault7.9 out of 10
Rank 104Subaru Legacy V · 1 electrical system fault7.9 out of 10
Rank 105Toyota C-HR I · 1 electrical system fault7.9 out of 10
Rank 106Toyota Corolla X · 1 electrical system fault7.9 out of 10
Rank 107Toyota GR Supra A90 · 1 electrical system fault7.9 out of 10
Rank 108Toyota Urban Cruiser · 1 electrical system fault7.9 out of 10
Rank 109Volkswagen Amarok I · 1 electrical system fault7.9 out of 10
Rank 110Volkswagen Arteon · 1 electrical system fault7.9 out of 10
Rank 111Volvo S40 II · 1 electrical system fault7.9 out of 10
Rank 112Volvo V50 · 1 electrical system fault7.9 out of 10
Rank 113Jeep Renegade · 2 electrical system faults7.9 out of 10
Rank 114MINI Cooper R56 · 2 electrical system faults7.9 out of 10
Rank 115Citroën C-Crosser · 2 electrical system faults8.0 out of 10
Rank 116Peugeot 4007 · 2 electrical system faults8.0 out of 10
Rank 117Renault Scénic IV · 2 electrical system faults8.0 out of 10
Rank 118Škoda Fabia I · 2 electrical system faults8.0 out of 10
Rank 119Audi A5 II · 3 electrical system faults8.1 out of 10
Rank 120BMW X1 F48 · 2 electrical system faults8.2 out of 10
Rank 121BMW X2 F39 · 2 electrical system faults8.2 out of 10
Rank 122Citroën C4 I · 2 electrical system faults8.2 out of 10
Rank 123Mazda CX-5 II · 2 electrical system faults8.2 out of 10
Rank 124Mercedes-Benz Clase E W212 · 2 electrical system faults8.2 out of 10
Rank 125Mercedes-Benz Clase M W163 · 2 electrical system faults8.2 out of 10
Rank 126Opel Zafira A · 2 electrical system faults8.2 out of 10
Rank 127Suzuki Ignis · 2 electrical system faults8.2 out of 10
Rank 128Volkswagen Tiguan I · 2 electrical system faults8.4 out of 10
Rank 129Dacia Logan II · 3 electrical system faults8.4 out of 10
Rank 130Nissan Qashqai II · 3 electrical system faults8.4 out of 10
Rank 131Hyundai i30 III · 1 electrical system fault8.6 out of 10
Rank 132Alfa Romeo 147 · 1 electrical system fault8.6 out of 10
Rank 133Alfa Romeo MiTo · 1 electrical system fault8.6 out of 10
Rank 134Audi A3 III · 1 electrical system fault8.6 out of 10
Rank 135Audi Q3 II · 1 electrical system fault8.6 out of 10
Rank 136BMW Serie 2 Active Tourer F45 · 1 electrical system fault8.6 out of 10
Rank 137Citroën C1 II · 1 electrical system fault8.6 out of 10
Rank 138Citroën C3 IV · 1 electrical system fault8.6 out of 10
Rank 139Citroën C5 II · 1 electrical system fault8.6 out of 10
Rank 140Cupra Formentor · 1 electrical system fault8.6 out of 10
Rank 141Dacia Jogger · 1 electrical system fault8.6 out of 10
Rank 142Fiat 500 · 1 electrical system fault8.6 out of 10
Rank 143Fiat 500e · 1 electrical system fault8.6 out of 10
Rank 144Fiat Tipo · 1 electrical system fault8.6 out of 10
Rank 145Ford C-Max I · 1 electrical system fault8.6 out of 10
Rank 146Ford EcoSport · 1 electrical system fault8.6 out of 10
Rank 147Ford Kuga III · 1 electrical system fault8.6 out of 10
Rank 148Ford Mondeo V · 1 electrical system fault8.6 out of 10
Rank 149Honda FR-V · 1 electrical system fault8.6 out of 10
Rank 150Hyundai Bayon · 1 electrical system fault8.6 out of 10
Rank 151Hyundai Ioniq · 1 electrical system fault8.6 out of 10
Rank 152Hyundai ix35 · 1 electrical system fault8.6 out of 10
Rank 153Hyundai Tucson IV · 1 electrical system fault8.6 out of 10
Rank 154Jeep Avenger · 1 electrical system fault8.6 out of 10
Rank 155Jeep Compass MP · 1 electrical system fault8.6 out of 10
Rank 156Jeep Wrangler JK · 1 electrical system fault8.6 out of 10
Rank 157Kia Cerato I · 1 electrical system fault8.6 out of 10
Rank 158Land Rover Discovery 5 · 1 electrical system fault8.6 out of 10
Rank 159Land Rover Range Rover Sport II · 1 electrical system fault8.6 out of 10
Rank 160Mazda 3 I · 1 electrical system fault8.6 out of 10
Rank 161Mazda 3 III · 1 electrical system fault8.6 out of 10
Rank 162Mazda 3 IV · 1 electrical system fault8.6 out of 10
Rank 163Mazda CX-3 · 1 electrical system fault8.6 out of 10
Rank 164Mazda CX-30 · 1 electrical system fault8.6 out of 10
Rank 165Mercedes-Benz Citan W415 · 1 electrical system fault8.6 out of 10
Rank 166Mercedes-Benz Clase E W213 · 1 electrical system fault8.6 out of 10
Rank 167Mercedes-Benz CLK C208 · 1 electrical system fault8.6 out of 10
Rank 168MINI Countryman R60 · 1 electrical system fault8.6 out of 10
Rank 169Mitsubishi Outlander II · 1 electrical system fault8.6 out of 10
Rank 170Nissan Leaf II · 1 electrical system fault8.6 out of 10
Rank 171Nissan Micra III · 1 electrical system fault8.6 out of 10
Rank 172Nissan Primastar · 1 electrical system fault8.6 out of 10
Rank 173Opel Meriva A · 1 electrical system fault8.6 out of 10
Rank 174Peugeot 206 · 1 electrical system fault8.6 out of 10
Rank 175Peugeot 308 I · 1 electrical system fault8.6 out of 10
Rank 176Peugeot 408 · 1 electrical system fault8.6 out of 10
Rank 177Renault Arkana · 1 electrical system fault8.6 out of 10
Rank 178Renault Austral · 1 electrical system fault8.6 out of 10
Rank 179Renault Captur II · 1 electrical system fault8.6 out of 10
Rank 180Renault Kangoo II · 1 electrical system fault8.6 out of 10
Rank 181Renault Twingo II · 1 electrical system fault8.6 out of 10
Rank 182Škoda Superb III · 1 electrical system fault8.6 out of 10
Rank 183Suzuki Swift III · 1 electrical system fault8.6 out of 10
Rank 184Toyota Auris II · 1 electrical system fault8.6 out of 10
Rank 185Toyota Corolla IX · 1 electrical system fault8.6 out of 10
Rank 186Toyota Corolla XII · 1 electrical system fault8.6 out of 10
Rank 187Toyota Verso · 1 electrical system fault8.6 out of 10
Rank 188Toyota Yaris Cross · 1 electrical system fault8.6 out of 10
Rank 189Toyota Yaris II · 1 electrical system fault8.6 out of 10
Rank 190Toyota Yaris III · 1 electrical system fault8.6 out of 10
Rank 191Toyota Yaris IV · 1 electrical system fault8.6 out of 10
Rank 192Volkswagen Golf VIII · 1 electrical system fault8.6 out of 10
Rank 193Volkswagen Polo VI · 1 electrical system fault8.6 out of 10
Rank 194Volvo V40 II · 1 electrical system fault8.6 out of 10
Rank 195Volvo XC60 II · 1 electrical system fault8.6 out of 10
Rank 196Dacia Duster II · 2 electrical system faults8.6 out of 10
Rank 197Opel Insignia B · 2 electrical system faults8.6 out of 10
Rank 198Opel Meriva B · 2 electrical system faults8.6 out of 10
Rank 199Seat León II · 2 electrical system faults8.7 out of 10
Rank 200Audi A4 B7 · 1 electrical system fault8.9 out of 10
Rank 201Audi A7 C8 · 1 electrical system fault8.9 out of 10
Rank 202Audi Q5 I · 1 electrical system fault8.9 out of 10
Rank 203BMW X3 E83 · 1 electrical system fault8.9 out of 10
Rank 204Dacia Sandero II · 1 electrical system fault8.9 out of 10
Rank 205Dacia Sandero III · 1 electrical system fault8.9 out of 10
Rank 206Jaguar XJ X351 · 1 electrical system fault8.9 out of 10
Rank 207Kia Niro I · 1 electrical system fault8.9 out of 10
Rank 208Kia Sportage V · 1 electrical system fault8.9 out of 10
Rank 209Mercedes-Benz GLA X156 · 1 electrical system fault8.9 out of 10
Rank 210Opel Insignia A · 1 electrical system fault8.9 out of 10
Rank 211Peugeot 508 I · 1 electrical system fault8.9 out of 10
Rank 212Renault Laguna II · 1 electrical system fault8.9 out of 10
Rank 213Renault Modus · 1 electrical system fault8.9 out of 10
Rank 214Seat León I · 1 electrical system fault8.9 out of 10
Rank 215Škoda Octavia I · 1 electrical system fault8.9 out of 10
Rank 216Toyota Prius IV · 1 electrical system fault8.9 out of 10
Rank 217Volkswagen Caddy III · 1 electrical system fault8.9 out of 10
Rank 218Volkswagen Golf IV · 1 electrical system fault8.9 out of 10
Rank 219Volkswagen Polo IV · 1 electrical system fault8.9 out of 10
Rank 220Honda Civic IX · 2 electrical system faults8.9 out of 10
Rank 221Honda CR-V IV · 2 electrical system faults8.9 out of 10
Rank 222Volkswagen Passat B7 · 2 electrical system faults8.9 out of 10
Rank 223Dacia Sandero I · 2 electrical system faults9.1 out of 10
Rank 224Hyundai i10 II · 2 electrical system faults9.1 out of 10
Rank 225MG ZS I · 2 electrical system faults9.1 out of 10
Rank 226Abarth 500 · 1 electrical system fault9.3 out of 10
Rank 227Audi A1 I · 1 electrical system fault9.3 out of 10
Rank 228Audi A2 · 1 electrical system fault9.3 out of 10
Rank 229Audi A3 II · 1 electrical system fault9.3 out of 10
Rank 230Audi A6 C7 · 1 electrical system fault9.3 out of 10
Rank 231Audi A7 C7 · 1 electrical system fault9.3 out of 10
Rank 232Audi A8 D5 · 1 electrical system fault9.3 out of 10
Rank 233BMW Serie 5 Gran Turismo F07 · 1 electrical system fault9.3 out of 10
Rank 234BMW Serie 6 F12/F13 · 1 electrical system fault9.3 out of 10
Rank 235Citroën Berlingo I · 1 electrical system fault9.3 out of 10
Rank 236Dacia Lodgy · 1 electrical system fault9.3 out of 10
Rank 237Fiat 500L · 1 electrical system fault9.3 out of 10
Rank 238Fiat Panda III · 1 electrical system fault9.3 out of 10
Rank 239Ford B-Max · 1 electrical system fault9.3 out of 10
Rank 240Ford Focus III · 1 electrical system fault9.3 out of 10
Rank 241Ford Puma · 1 electrical system fault9.3 out of 10
Rank 242Honda Jazz II · 1 electrical system fault9.3 out of 10
Rank 243Iveco Daily VI · 1 electrical system fault9.3 out of 10
Rank 244Kia Ceed II · 1 electrical system fault9.3 out of 10
Rank 245Kia Picanto II · 1 electrical system fault9.3 out of 10
Rank 246Mercedes-Benz Clase A W176 · 1 electrical system fault9.3 out of 10
Rank 247Mercedes-Benz Clase M W164 · 1 electrical system fault9.3 out of 10
Rank 248Mercedes-Benz Clase S W223 · 1 electrical system fault9.3 out of 10
Rank 249Mercedes-Benz CLS C219 · 1 electrical system fault9.3 out of 10
Rank 250Mercedes-Benz GLB X247 · 1 electrical system fault9.3 out of 10
Rank 251MG MG4 · 1 electrical system fault9.3 out of 10
Rank 252Mitsubishi Colt VI · 1 electrical system fault9.3 out of 10
Rank 253Nissan Note I · 1 electrical system fault9.3 out of 10
Rank 254Nissan Qashqai III · 1 electrical system fault9.3 out of 10
Rank 255Opel Zafira B · 1 electrical system fault9.3 out of 10
Rank 256Peugeot 107 · 1 electrical system fault9.3 out of 10
Rank 257Peugeot 108 · 1 electrical system fault9.3 out of 10
Rank 258Peugeot 2008 I · 1 electrical system fault9.3 out of 10
Rank 259Peugeot 208 I · 1 electrical system fault9.3 out of 10
Rank 260Peugeot 3008 I · 1 electrical system fault9.3 out of 10
Rank 261Peugeot Partner I · 1 electrical system fault9.3 out of 10
Rank 262Porsche Cayenne I · 1 electrical system fault9.3 out of 10
Rank 263Seat Ibiza III · 1 electrical system fault9.3 out of 10
Rank 264Seat Ibiza IV · 1 electrical system fault9.3 out of 10
Rank 265Škoda Fabia II · 1 electrical system fault9.3 out of 10
Rank 266Škoda Octavia II · 1 electrical system fault9.3 out of 10
Rank 267Škoda Superb I · 1 electrical system fault9.3 out of 10
Rank 268Toyota Corolla Cross · 1 electrical system fault9.3 out of 10
Rank 269Volkswagen Golf VI · 1 electrical system fault9.3 out of 10
Rank 270Volkswagen Passat B6 · 1 electrical system fault9.3 out of 10
Rank 271Volkswagen Polo V · 1 electrical system fault9.3 out of 10
Rank 272Volkswagen up! · 1 electrical system fault9.3 out of 10
Rank 273Alfa Romeo 166 · 1 electrical system fault9.6 out of 10
Rank 274Dacia Logan I · 1 electrical system fault9.6 out of 10
Rank 275Lotus Elise S2 · 1 electrical system fault9.6 out of 10
Rank 276Mazda 3 II · 1 electrical system fault9.6 out of 10
Rank 277Renault Clio IV · 1 electrical system fault9.6 out of 10
Rank 278Seat Mii · 1 electrical system fault9.6 out of 10
Rank 279Škoda Yeti · 1 electrical system fault9.6 out of 10
Rank 280Volvo V60 II · 1 electrical system fault9.6 out of 10

No documented electrical system faults

We have found no reliable sources reporting electrical system faults on these cars. That does not mean they never fail: maintenance and use count as much as design.