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What 23 owners told NHTSA about the 2020 Mercedes-benz CLA

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (23)Crash / fire / injury (3)Backup camera & sensors (8)Electrical system (8)Brakes (3)Visibility & wipers (3)Engine (2)Fuel system (2)Steering (2)Airbags (1)Driver assistance (1)Equipment (1)

2 of 23 complaints match · Engine · clear filters

Sep 16, 2024Engine

Engine was failed prior to purchase, it is available for inspection. Engine jerks while driving. Dealer changed engine and problem got worse. Vehicle was inspected at Mercedes Benz Manhattan. Engine light keeps coming on and engine oil raises above normal level and warning light comes on and dealer says its normal.

NHTSA ODI 11614748

Jan 9, 2023EngineFuel system

Approximately several weeks ago, the check engine light illuminated in my vehicle. No issues were present at that time. Shortly after, approximately a week later, the vehicle began to stutter when reversing or driving on surface streets after being on the highway. The vehicle also would stall after the check engine light flashed several times. The vehicle would need to be turned off and turned back on to accelerate correctly and not stall. This has not been inspected by the dealer yet, a service appointment has been made. Mercedes recently recalled other models due to a water intrusion issue, but this model was not included, however it is exhibiting nearly the exact same symptoms.

NHTSA ODI 11500957

Working with the data? Download all 23 complaints as CSV · fetched from NHTSA July 19, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2020 Mercedes-benz CLA verdict →