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Mercedes EQC vs Stellantis e-CMP (e-208, Corsa-e, ë-C4…): which engine is more reliable?

According to our risk index, the Stellantis e-CMP (e-208, Corsa-e, ë-C4…) carries less risk than the Mercedes EQC: 36/100 versus 38/100 (both moderate risk). The Mercedes EQC has 3 documented serious faults, the main one being «High-voltage battery: housing with insufficient corrosion protection and a poorly tightened cell module»; 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

Mercedes EQC

38

Moderate risk · 3 serious faults

Risk index

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

36

Moderate risk · 3 serious faults

Lower risk

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

14 sourcesHow we work

Is the Mercedes EQC reliable?

The EQC's electric drivetrain has no widespread faults in the sources consulted. What is documented are battery recalls (2019 and 2021) and a front differential recall (2019), all precautionary, plus isolated cases of electric motor noise.[1][2][3][4]

See the 3 of the Mercedes EQC 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.[5][6][7]

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

Side-by-side comparison

Comparison of Mercedes EQC and Stellantis e-CMP (e-208, Corsa-e, ë-C4…)
Mercedes EQCStellantis e-CMP (e-208, Corsa-e, ë-C4…)
Technical data
TypeEngineEngine
FuelElectricalElectrical
Displacement——
Timing——
Power408 hp136–156 hp
Production2019–2023[4][8]since 2019[9][10]
Reliability
Risk index (what is it?)38Moderate risk36Moderate risk
Documented faults35
Of high or critical severity33
Worst severityCritical severityCritical severity
Main faults
  1. Critical severity: High-voltage battery: housing with insufficient corrosion protection and a poorly tightened cell module
  2. Critical severity: Front axle differential gear bolt that may break
  3. High severity: Abnormal electric motor noise: cases of motor unit replacement
  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 repairup to €8,200Abnormal electric motor noise: cases of motor unit replacementPublished figure[4]No reliable data
Which versions to buy
BuyRecommended versionsNoneNone
With cautionVersions to be cautious about
  • EQC 400 4MATIC, 80 kWh, 408 hp (2019-2023)[1][2][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

Mercedes EQC

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

See the 19 models with the Stellantis e-CMP (e-208, Corsa-e, ë-C4…)

Other comparisons

With the Mercedes EQC

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

Compare other engines

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Sources

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

  1. Safety Gate: alerta A12/01009/21, Mercedes-Benz EQC (carcasa de la batería de alta tensión)Comisión Europea, Safety Gate · Official body · consulted 30 October 2026
  2. Safety Gate: alerta A12/01180/22, Mercedes-Benz EQC (batería de alta tensión, módulo de celdas)Comisión Europea, Safety Gate · Official body · consulted 30 October 2026
  3. Mercedes-Benz EQC (2019): recall of the front-axle differential bolt (RAPEX 51/2019)car-recalls.eu · Other source · published 20 December 2019 · consulted 30 October 2026
  4. Tous les problèmes du Mercedes EQC 2019-2023 (5 témoignages)fiches-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 · Reliability study · published 4 September 2026 · consulted 30 October 2026 · in Spanish
  6. 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
  7. E-Fahrzeug-Rückruf: E-Motor könnte ausfallenauto motor und sport · Motoring press · published 1 March 2023 · consulted 30 October 2026 · in German
  8. Mercedes-Benz EQCWikipedia · Other source · consulted 30 October 2026
  9. Common Modular Platform (CMP / e-CMP)Wikipedia · Other source · consulted 30 October 2026
  10. Peugeot Expert (electric versions)Wikipedia · Other source · consulted 30 October 2026
  11. E-Auto: Rückruf bei Opel, Peugeot, Citroën und DSGebrauchtwagenberater.de · Motoring press · published 8 June 2023 · consulted 30 October 2026 · in German
  12. Fiat 600 : fiabilité, pannes et rappels (600e)Fiches-auto.fr · Reliability study · consulted 30 October 2026 · in French
  13. Rückruf Opel Astra Electric: Kann in falsche Richtung fahrenauto motor und sport · Motoring press · published 23 November 2023 · consulted 30 October 2026 · in German
  14. Opel Astra (Astra Electric)Wikipedia · Other source · consulted 30 October 2026