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Mercedes EQC engine: faults and reliability

Mercedes-Benz EQC: dos motores asíncronos and batería de 80 kWh · Mercedes-Benz

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]

Risk index
38
Moderate risk · what it is
Documented faults
3
3 of high or critical severity
Timing
—
Technical data[4][5]
Production
2019–2023
1 model on this site

6 sourcesHow we work

Which Mercedes EQC versions should you buy?

Our verdict for each version, based on the documented faults.

  • EQC 400 4MATIC, 80 kWh, 408 hp (2019-2023)

    2019–2023 · 408 hp

    With caution

    There are no widespread faults, but there are battery recalls (2019 and 2021) and a front differential recall (2019) that should be confirmed as closed, depending on the chassis number.[1][2][3]

Buy: No known serious faults, or they have already been corrected, in this version. With caution: Worth buying if something specific is verified: history, a replaced part or a completed campaign. Avoid: High risk of a serious fault that is hard to check for or prevent.

Known faults of the Mercedes EQC

Sorted from most to least important (severity × frequency).

  1. 1Critical severityFrequency: OccasionalTraction batteryHigh-voltage battery: housing with insufficient corrosion protection and a poorly tightened cell moduleMercedes recalled two batches of EQCs over manufacturing defects in the battery: 1,463 cars built in 2019 with the housing exposed to corrosion and moisture, and 5 built between May and July 2021 with a loosely tightened cell module. In both cases the risk identified is fire.
  2. 2Critical severityFrequency: RareElectric motor and reduction gearFront axle differential gear bolt that may breakMercedes recalled the first EQCs, built up to November 2019, in 2019 because a bolt on the front axle differential gear may not meet the required strength and could break. A fragment could lock the differential and the front wheels, or damage the housing and cause an oil leak.
  3. 3High severityFrequency: RareElectric motor and reduction gearAbnormal electric motor noise: cases of motor unit replacementTwo of the five testimonies on the French EQC listing describe a loud electric motor noise (at around 30,000 km in one case, and a dynamo-like hum in the other) that ended in the motor being replaced. It is a very small base: no widespread defect is recorded.Repair: €8,200

Severity colours: low, medium, high, critical. How we rate them

By part

Compare each fault with the same part on other engines: symptoms, cost and affected models.

What the Mercedes EQC is

The EQC was Mercedes-Benz's first series-production electric car (2019-2023). It uses an 80 kWh gross battery and two asynchronous motors, one per axle, and was built in Bremen and Beijing.[5]

In Spain it kept the name EQC 400 4MATIC (408 hp). According to Driving Electric, the battery warranty means Mercedes repairs or replaces it if its capacity falls below 70% within eight years.[4][6]

Manufacturer
Mercedes-Benz
Family
EQC (BR 293)
Type
Electrical
Engine
Asíncrono en cada eje (tracción total 4MATIC)
Battery
80 kWh
Power
408 hp
Peak torque
760 Nm
Production
2019–2023
Makes
Mercedes-Benz

Technical data[4][5]

What changed between versions

  1. 2019–2023

    EQC 400 4MATIC, 80 kWh, 408 hp (2019-2023)

    80 kWh gross battery and one asynchronous motor on each axle (all-wheel drive). Wikipedia gives 300 kW and 760 N·m for the EQC 400 4MATIC; the fiches-auto listing gives the power as 408 hp. There were no battery or motor variants during production.[4][5]

Cars fitted with the Mercedes EQC

1 model sold in Europe. Open each one to see all its faults and the buying checklist.

Mercedes-Benz

Compare the Mercedes EQC

Maintenance parts for the Mercedes EQC

The parts replaced at services and when the timing belt or chain is changed, searched for this engine. Confirm the part number with the registration plate or VIN.

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Are you buying a car with the Mercedes EQC?

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Do you have a car with this engine? Tell us which faults you have had, at how many kilometres and how much you paid. Report your fault.

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. Mercedes-Benz EQCWikipedia · Other source · consulted 30 October 2026
  6. Mercedes EQC reliability and safetyDriving Electric · Motoring press · published June 2023 · consulted 30 October 2026