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Stellantis e-CMP (e-208, Corsa-e, ë-C4…) vs Volvo-Polestar CMA eléctrico (Polestar 2, C40, XC40): 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 Volvo-Polestar CMA eléctrico (Polestar 2, C40, XC40): 36/100 versus 45/100 (both moderate risk). 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)»; the Volvo-Polestar CMA eléctrico (Polestar 2, C40, XC40) has 3 documented serious faults, the main one being «Fire risk from overheating of the high-voltage battery in the XC40 Recharge (2020–2022)».

Risk index

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

36

Moderate risk · 3 serious faults

Lower risk

Risk index

Volvo-Polestar CMA eléctrico (Polestar 2, C40, XC40)

45

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

15 sourcesHow we work

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.[1][2][3]

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

Is the Volvo-Polestar CMA eléctrico (Polestar 2, C40, XC40) reliable?

A drivetrain with no documented motor or gearbox faults: what there is are campaigns covering the first Polestar 2 production run (inverter and software, 2020–2021) and the 2026 Safety Gate alert for the battery of the 2020–2022 XC40.[4][5][6]

See the 4 of the Volvo-Polestar CMA eléctrico (Polestar 2, C40, XC40) faults

Side-by-side comparison

Comparison of Stellantis e-CMP (e-208, Corsa-e, ë-C4…) and Volvo-Polestar CMA eléctrico (Polestar 2, C40, XC40)
Stellantis e-CMP (e-208, Corsa-e, ë-C4…)Volvo-Polestar CMA eléctrico (Polestar 2, C40, XC40)
Technical data
TypeEngineEngine
FuelElectricalElectrical
Displacement——
Timing——
Power136–156 hp231–442 hp
Productionsince 2019[7][8]since 2020[4][9]
Reliability
Risk index (what is it?)36Moderate risk45Moderate risk
Documented faults54
Of high or critical severity33
Worst severityCritical severityCritical severity
Main faults
  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)
  1. Critical severity: Fire risk from overheating of the high-voltage battery in the XC40 Recharge (2020–2022)
  2. High severity: Faulty inverter causing loss of traction in the first Polestar 2 units
  3. High severity: Battery management software and high-voltage contactors causing power loss on the Polestar 2
Most expensive documented repairNo reliable dataNo reliable data
Which versions to buy
BuyRecommended versionsNone
  • Single Motor Extended Range 82 kWh, 252–299 hp, rear-wheel drive (2023–present)[4][9]
  • Twin Motor 82 kWh, 421–442 hp, all-wheel drive (2023–present)[4][9]
With cautionVersions to be cautious about
  • e-CMP 50 kWh, 136 hp (2019-2024)[1][2][3]
  • Large vans 75 kWh, 136 hp (2020-2024)[8][10]
  • e-CMP second generation 54 kWh, 156 hp (2022-)[11][12][13]
  • Single Motor 69 kWh, 231–238 hp, front-wheel drive (2021–2023)[6][14]
  • Twin Motor 78 kWh, 408 hp, all-wheel drive (2020–2023)[4][5][15]
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

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

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

Volvo-Polestar CMA eléctrico (Polestar 2, C40, XC40)

Other comparisons

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

With the Volvo-Polestar CMA eléctrico (Polestar 2, C40, XC40)

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. 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
  2. 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
  3. E-Fahrzeug-Rückruf: E-Motor könnte ausfallenauto motor und sport · Motoring press · published 1 March 2023 · consulted 30 October 2026 · in German
  4. Polestar 2 (Wikipedia, inglés): recalls y especificacionesWikipedia · Other source · consulted 30 October 2026
  5. Polestar 2 recall: over 4,500 models recalled due to power failure issueDriving Electric · Motoring press · published 2 November 2020 · consulted 30 October 2026
  6. Recall zbog opasnosti od požara: opoziv Volvo XC40 (Safety Gate SR/01964/26)Automania.hr · General press · published July 2026 · consulted 30 October 2026 · in another language
  7. Common Modular Platform (CMP / e-CMP)Wikipedia · Other source · consulted 30 October 2026
  8. Peugeot Expert (electric versions)Wikipedia · Other source · consulted 30 October 2026
  9. Volvo C40 (Wikipedia, alemán): datos técnicosWikipedia · Other source · consulted 30 October 2026 · in German
  10. E-Auto: Rückruf bei Opel, Peugeot, Citroën und DSGebrauchtwagenberater.de · Motoring press · published 8 June 2023 · consulted 30 October 2026 · in German
  11. Fiat 600 : fiabilité, pannes et rappels (600e)Fiches-auto.fr · Reliability study · consulted 30 October 2026 · in French
  12. Rückruf Opel Astra Electric: Kann in falsche Richtung fahrenauto motor und sport · Motoring press · published 23 November 2023 · consulted 30 October 2026 · in German
  13. Opel Astra (Astra Electric)Wikipedia · Other source · consulted 30 October 2026
  14. Fiabilité Volvo XC40 (2017): problèmes connusFiches-auto.fr · Reliability study · consulted 30 October 2026 · in French
  15. Polestar 2 Problems / Reliability GuideBumper · Other source · published 2 July 2025 · consulted 30 October 2026