Volkswagen 2.3 VR5 de 10 and 20 válvulas (AGZ, AQN and AZX)Ignition coils and spark plugs
Faulty ignition coils on the 2.3 VR5 (V5)
Why this rating?
Medium severity: It can leave you stranded or get worse if ignored, without destroying the engine.
Frequency occasional: Fiches-auto records a faulty coil among the 9 reviews of the 150 hp Golf IV 2.3 V5 and, in the Toledo entry, warns that the V5 may have ignition problems (with no owner reviews). AutoHints cites it on the AGZ and the AQN. This is limited data, with no rates.[1][2][3][4]
Symptoms
- Misfires in one cylinder when a coil is weak, according to fiches-auto.[1]Jerking: other faults that cause it · Garage soon
- The engine loses power while running on one cylinder fewer, according to AutoHints.[3][4]Less power: other faults that cause it · Monitor
- Engine vibration and a smell of unburnt petrol, according to AutoHints (AGZ).[3]Vibrations: other faults that cause it · Monitor
- Misfire and engine warning light on, according to AutoHints (AQN).[4]Engine warning light: other faults that cause it · Garage soon
Why it happens
Affected cars and years
Fiches-auto refers to the 150 hp V5 (Golf IV and Toledo); AutoHints to the AGZ and the AQN, with five individual coils on the AQN.[1][2][3][4]
| Version | Years | Codes |
|---|---|---|
| 2.3 VR5 10v 150 hp (AGZ; 1997-2001) | 1997–2001 | AGZ |
| 2.3 VR5 20v 170 hp (AQN, AZX; 2000-2006) | 2000–2006 | AQNAZX |
Models fitted with the affected versions
Seat
- Seat Toledo II1998–2003
Volkswagen
- Volkswagen Golf IV1997–2003
- Volkswagen Bora1998–2005
- Volkswagen Passat B51997–2005
- Volkswagen Beetle I2000–2005
How much it costs to repair
Includes: Replacement of one or more ignition coils, with labour.
How we calculated it: We have not found a published price in Spain for this repair on the VR5, nor labour hours that can be cited alongside a parts price, so we do not give a figure.
Gebrauchtwagenberater gives 100-200 € in Germany for coils and leads on a petrol Golf IV in general; we do not use it as a Spanish price.
Prices in Spain, including VAT. A workshop hour costs on average €38–66 at independent garages and €77–134 at dealerships in Spain, depending on the region and the brand. How we calculate costs
How to check for it before buying a used car
Parts needed
The part or kit that fixes this fault, according to the sources.
VR5 ignition coil[4]
Generates the spark for one cylinder; the AQN has five individual coils, one per cylinder.
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How to prevent it
Recalls, campaigns and claims
As of 2 November 2026, we have no record of recalls, campaigns or extended manufacturer warranties for this fault. Check with an official dealer using the chassis (VIN) number: they will tell you whether the car has any outstanding campaign.
What owners say
Frequently asked questions
What symptoms does a failed coil on the VR5 cause?
Fiches-auto describes misfires in one cylinder; AutoHints adds loss of power, vibration, a smell of unburnt petrol and, on the AQN, an engine warning light.[1][3][4]
Is this a common fault on the VR5?
It appears on Fiches-auto (1 of the 9 Golf IV reviews) and in AutoHints' entries, but there are no statistics; Gebrauchtwagenberater only cites coils on the Golf IV 1.8 T.[2][3][5]
How many coils does the VR5 have?
AutoHints says the AQN has five individual coils, one per cylinder.[4]
What can you do now?
We will put you in touch with a partner only if you authorise it in the form.
Other 2.3 VR5 (V5) faults
- High severityFrequency: OccasionalTimingTiming chain stretchGebrauchtwagenberater warns that the VR5's chain stretches now and then and, in the worst case, destroys the engine. AutoHints places the cold rattle between 150,000 and 250,000 km and a very expensive repair, because the chain is at the back, between the engine and the gearbox.Appears at around 150,000 km
- Medium severityFrequency: OccasionalCoolingCoolant leaks from the hoses and thermostat housingAutoHints notes that the VR5's plastic coolant hoses and thermostat housing crack with heat and age and leak coolant, and fiches-auto warns that the V5 may have cooling problems. If it overheats, the head gasket can fail.
More faults with the ignition coils on other engines and cars
- Medium severityFrequency: Very frequent1.4 and 1.6 16vIgnition coil failureThe individual ignition coils are the most-cited fault of the K4J/K4M in the European Renault versions: they fail frequently and cause jerking, loss of power and the engine warning light coming on. It is a cheap electrical part to replace, not internal engine damage.Appears at around 30,000 km
- High severityFrequency: Occasional1.2 PureTechSpark plug breakage on the 130 hp 1.2 PureTech turboOn the 130 hp 1.2 PureTech/e-THP turbo the original spark plugs can break; if a fragment falls into the cylinder it can damage the engine. Autojournal cites a 2015 recall to replace them on the 308 II.
- Medium severityFrequency: CommonBMW N43/N46Injector, ignition coil and NOx sensor failures (N43)On the direct-injection BMW N43, failures of the injectors, ignition coils (mainly in 2007-2008 units, now rare after a BMW service action) and the NOx sensor of its lean-burn combustion have been documented. The indirect-injection N46 does not have that sensor and does not suffer these failures.
- Medium severityFrequency: CommonBMW N54/N55Oil in the spark plug wells from the rocker cover gasketOn the N54 and N55 the rocker cover gasket hardens with age and lets oil seep into the spark plug wells. Guides treat it as a known fault: it smells of burnt oil and can damage spark plugs and coils.
- Medium severityFrequency: Common1.0/1.2/1.4 EcotecIgnition coil failureThe ignition coils on this engine fail fairly often in the Corsa, Astra, Meriva and Adam, causing jerking, the engine warning light and, in the clearest cases, the engine running on one cylinder fewer; the garage fixes it by replacing the affected coil.Repair (garage): €150–€480Appears at around 15,000 km
- Medium severityFrequency: Common1.4 TurboIgnition coil failureThe ignition coils of the 1.4 Turbo fail fairly often on the Mokka and Meriva B, with jerking, occasional loss of power and the engine warning light on; the garage fixes it by replacing the affected coil or coils.Repair (garage): €400–€600Appears at around 47,000 km
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Sources
Every fact on this page links to its source. If you find an error, let us know.
- Tous les problèmes sur Seat TOLEDO 1999 - 2004 (61 témoignages)Fiches-auto.fr · Motoring press · consulted 2 November 2026 · in French
- Tous les problèmes sur Volkswagen GOLF IV 1998-2003 (541 témoignages)Fiches-auto.fr · Motoring press · consulted 2 November 2026 · in French
- Engine 2.3 VR5 (AGZ) 150 HP: Experiences, problems, fuel consumption and used-car buying tipsAutoHints · Technical documentation · published 24 July 2025 · consulted 2 November 2026
- Volkswagen 2.3 VR5 20V (AQN): Experiences, problems, fuel consumption and used car buying tipsAutoHints · Technical documentation · published 24 July 2025 · consulted 2 November 2026
- VW Golf 4: Typische Probleme und SchwachstellenGebrauchtwagenberater.de · Motoring press · published 2 September 2026 · consulted 2 November 2026 · in German