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MG eléctrico (MG4, ZS EV, Marvel R) vs Stellantis e-CMP (e-208, Corsa-e, ë-C4…): which engine is more reliable?

According to our risk index, the MG eléctrico (MG4, ZS EV, Marvel R) carries less risk than the Stellantis e-CMP (e-208, Corsa-e, ë-C4…): 20/100 (low risk) versus 36/100 (moderate 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 Stellantis e-CMP (e-208, Corsa-e, ë-C4…) has 3 documented serious faults, the main one being «Loss of traction from a high-voltage system cut-out (‘electric traction fault’ warning)».

Risk index

MG eléctrico (MG4, ZS EV, Marvel R)

20

Low risk · 1 serious fault

Lower risk

Risk index

Stellantis e-CMP (e-208, Corsa-e, ë-C4…)

36

Moderate risk · 3 serious faults

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

19 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 Stellantis e-CMP (e-208, Corsa-e, ë-C4…) reliable?

Stellantis’s electric drivetrain has no serious factory faults documented: the battery holds up well (median 94% health at 50,000 km and 90.7% at 150,000 km in the e-208 and Corsa-e), and the problems cited are the charger and several software campaigns.[4][5][6]

See the 5 of the Stellantis e-CMP (e-208, Corsa-e, ë-C4…) faults

Side-by-side comparison

Comparison of MG eléctrico (MG4, ZS EV, Marvel R) and Stellantis e-CMP (e-208, Corsa-e, ë-C4…)
MG eléctrico (MG4, ZS EV, Marvel R)Stellantis e-CMP (e-208, Corsa-e, ë-C4…)
Technical data
TypeEngineEngine
FuelElectricalElectrical
Displacement——
Timing——
Power143–435 hp136–156 hp
Productionsince 2019[7][8][9][10]since 2019[11][12]
Reliability
Risk index (what is it?)20Low risk36Moderate risk
Documented faults25
Of high or critical severity13
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. High severity: Loss of traction from a high-voltage system cut-out (‘electric traction fault’ warning)
  2. High severity: Traction battery control calibration: motor cut-out from faulty readings (2022)
  3. Critical severity: Astra Electric: communication fault between control units that can make the car move backwards (2023)
Most expensive documented repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versions
  • ZS EV Long Range 72.6 kWh, 177 hp (2021-2024)[13]
None
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)[14]
  • ZS EV 44.5 kWh, 143 hp (2019-2021)[15]
  • ZS EV Standard Range 51 kWh LFP, 150 hp (2022-2024)[13]
  • Marvel R Comfort/Luxury 70 kWh, 180 hp (2021-2024)[3]
  • Marvel R Performance 70 kWh, 288 hp (2021-2024)[3]
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)

Stellantis e-CMP (e-208, Corsa-e, ë-C4…)

See the 20 models with the Stellantis e-CMP (e-208, Corsa-e, ë-C4…)

Other comparisons

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

With the Stellantis e-CMP (e-208, Corsa-e, ë-C4…)

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. Ni un solo eléctrico baja del 86 % de batería: 500.000 tests miden la degradación de 20 modelos a los 150.000 kmtestcoches.es · Reliability study · published 4 September 2026 · consulted 30 October 2026 · in Spanish
  5. Peugeot e-208, e-2008, DS 3 e-Tense. Un rappel de 5 761 exemplairesL'argus · Motoring press · published 20 April 2022 · consulted 30 October 2026 · in French
  6. E-Fahrzeug-Rückruf: E-Motor könnte ausfallenauto motor und sport · Motoring press · published 1 March 2023 · 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. Common Modular Platform (CMP / e-CMP)Wikipedia · Other source · consulted 30 October 2026
  12. Peugeot Expert (electric versions)Wikipedia · Other source · consulted 30 October 2026
  13. Fiabilité Mg ZS: toutes les pannes connuesFiches-auto.fr · Reliability study · consulted 30 October 2026 · in French
  14. Foro GoingElectric: MG4 XPower con fallo del sistema de control y sin cargaGoingElectric · Owners' forum · consulted 30 October 2026 · in German
  15. 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
  16. E-Auto: Rückruf bei Opel, Peugeot, Citroën und DSGebrauchtwagenberater.de · Motoring press · published 8 June 2023 · consulted 30 October 2026 · in German
  17. Fiat 600 : fiabilité, pannes et rappels (600e)Fiches-auto.fr · Reliability study · consulted 30 October 2026 · in French
  18. Rückruf Opel Astra Electric: Kann in falsche Richtung fahrenauto motor und sport · Motoring press · published 23 November 2023 · consulted 30 October 2026 · in German
  19. Opel Astra (Astra Electric)Wikipedia · Other source · consulted 30 October 2026