Skip to content
MotorFiable
en

MG eléctrico (MG4, ZS EV, Marvel R) vs Tesla Model 3 / Model Y: which engine is more reliable?

According to our risk index, the MG eléctrico (MG4, ZS EV, Marvel R) carries less risk than the Tesla Model 3 / Model Y: 20/100 versus 24/100 (both low risk). The MG eléctrico (MG4, ZS EV, Marvel R) has 1 documented serious fault, the main one being «High-voltage system fault warning and loss of propulsion»; the Tesla Model 3 / Model Y has 2 documented serious faults, the main one being «Total failure of the traction battery in the Tesla Model 3 and Model Y».

Risk index

MG eléctrico (MG4, ZS EV, Marvel R)

20

Low risk · 1 serious fault

Lower risk

Risk index

Tesla Model 3 / Model Y

24

Low risk · 2 serious faults

The index (0–100) weights the severity and frequency of the three most serious documented faults. How it is calculated

18 sourcesHow we work

Is the MG eléctrico (MG4, ZS EV, Marvel R) reliable?

MG electric cars have few documented battery or motor faults; the most cited is AC charging, which is sometimes rejected or interrupted. What Car? places the MG4 in the lower part of its survey, mainly for minor electronics.[1][2][3]

See the 2 of the MG eléctrico (MG4, ZS EV, Marvel R) faults

Is the Tesla Model 3 / Model Y reliable?

The electric drivetrain of the Model 3 and Model Y has had few documented problems in Europe: ADAC puts the three-year-old Model 3 at 0.7 faults per 1,000 vehicles, and Aviloo measures battery health at around 89–90% at 150,000 km. There are only isolated cases of battery, motor and, somewhat more often, on-board charger or charging port failures.[4][5][6]

See the 3 of the Tesla Model 3 / Model Y faults

Side-by-side comparison

Comparison of MG eléctrico (MG4, ZS EV, Marvel R) and Tesla Model 3 / Model Y
MG eléctrico (MG4, ZS EV, Marvel R)Tesla Model 3 / Model Y
Technical data
TypeEngineEngine
FuelElectricalElectrical
Displacement——
Timing——
Power143–435 hp275–513 hp
Productionsince 2019[7][8][9][10]since 2019[4][11][12][13]
Reliability
Risk index (what is it?)20Low risk24Low risk
Documented faults23
Of high or critical severity12
Worst severityHigh severityCritical severity
Main faults
  1. Medium severity: Charging faults: on-board charger and interrupted charging
  2. High severity: High-voltage system fault warning and loss of propulsion
  1. Critical severity: Total failure of the traction battery in the Tesla Model 3 and Model Y
  2. Medium severity: Failure of the on-board charger or charging port on the Tesla Model 3 and Model Y
  3. High severity: Failure of the electric motor or traction unit on the Tesla Model 3 and Model Y that immobilises the car
Most expensive documented repairNo reliable dataup to €14,000Total failure of the traction battery in the Tesla Model 3 and Model YPublished figure[4]
Which versions to buy
BuyRecommended versions
  • ZS EV Long Range 72.6 kWh, 177 hp (2021-2024)[14]
  • Rear-wheel drive (Model 3 276–325 hp, Model Y 275–347 hp)[4][6][11]
  • Long Range dual motor (441 hp)[4][15]
  • Performance dual motor (513 hp)[4][16]
With cautionVersions to be cautious about
  • MG4 Standard Range 51 kWh LFP, 170 hp (2022-present)[2]
  • MG4 Long Range 64 kWh, 204 hp (2022-present)[1]
  • MG4 Extended Range 77 kWh, 245 hp (2023-present)[1][2]
  • MG4 XPower 64 kWh, 435 hp (2023-present)[17]
  • ZS EV 44.5 kWh, 143 hp (2019-2021)[18]
  • ZS EV Standard Range 51 kWh LFP, 150 hp (2022-2024)[14]
  • Marvel R Comfort/Luxury 70 kWh, 180 hp (2021-2024)[3]
  • Marvel R Performance 70 kWh, 288 hp (2021-2024)[3]
None
AvoidVersions to avoidNoneNone

Severity of each fault: green, low; amber, medium; red, high; dark red, critical. How we rate them

Cars that each one is fitted to

MG eléctrico (MG4, ZS EV, Marvel R)

Tesla Model 3 / Model Y

Other comparisons

With the MG eléctrico (MG4, ZS EV, Marvel R)

With the Tesla Model 3 / Model Y

Compare other engines

That is the comparison you are viewing: change one of the two engines.

Sources

Every fact on this page links to its source. If you find an error, let us know.

  1. Fiabilité Mg MG4 (2023): toutes les pannes connuesFiches-auto.fr · Reliability study · consulted 30 October 2026 · in French
  2. Used MG4 2022-present reliabilityWhat Car? · Reliability study · consulted 30 October 2026
  3. Fiabilité Mg Marvel R (2021): toutes les pannes connuesFiches-auto.fr · Reliability study · consulted 30 October 2026 · in French
  4. Fiabilité Tesla Model 3 (2018-2023): 63 témoignages, problèmes connus et rappelsfiches-auto.fr · Motoring press · consulted 30 October 2026 · in French
  5. Ni un solo eléctrico baja del 86 % de batería: 500.000 tests miden la degradación de 20 modelos a los 150.000 kmtestcoches.es · Motoring press · published 4 September 2026 · consulted 30 October 2026 · in Spanish
  6. ADAC-Pannenstatistik 2026: Die Patienten werden immer älterMotor1 Deutschland · Motoring press · published 23 April 2026 · consulted 30 October 2026 · in German
  7. MG4 EVWikipedia · Other source · consulted 30 October 2026
  8. MG ZS (crossover): sección MG EZS / ZS EVWikipedia · Other source · consulted 30 October 2026
  9. Datos generales MG MG4 Electric Luxury (05/23 - 07/25)ADAC · Technical documentation · consulted 30 October 2026 · in German
  10. MG Marvel R Electric: motores, equipamiento y preciosCarnovo · Technical documentation · published 21 July 2023 · consulted 30 October 2026 · in Spanish
  11. Fiabilité Tesla Model Y (2021-2025): 19 témoignages, problèmes connus et rappelsfiches-auto.fr · Motoring press · consulted 30 October 2026 · in French
  12. Tesla Model 3Wikipedia (inglés) · Other source · consulted 30 October 2026
  13. Tesla Model YWikipedia (inglés) · Other source · consulted 30 October 2026
  14. Fiabilité Mg ZS: toutes les pannes connuesFiches-auto.fr · Reliability study · consulted 30 October 2026 · in French
  15. Tesla Model 3 und Model Y: Akku-Degradation nach 150.000 kmelektroquatsch.de · Motoring press · published 25 September 2026 · consulted 30 October 2026 · in German
  16. Tesla delaying Model Y Performance deliveries from Giga Berlin over drive unit issuesDrive Tesla Canada · Motoring press · published 25 June 2022 · consulted 30 October 2026
  17. Foro GoingElectric: MG4 XPower con fallo del sistema de control y sin cargaGoingElectric · Owners' forum · consulted 30 October 2026 · in German
  18. Foro MGEVs: batería de tracción de un ZS EV de 2019 averiada con menos de 22.000 millasMGEVs.com · Owners' forum · published 26 August 2025 · consulted 30 October 2026