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What 15 owners told NHTSA about the 2020 Chevrolet Impala

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 (15)Crash / fire / injury (3)Electrical system (3)Steering (3)Airbags (2)Fuel system (2)Transmission & drivetrain (2)Body & structure (1)Engine (1)Lane Departure (1)Lights (1)Seat belts (1)

1 of 15 complaints match · Engine · clear filters

Sep 19, 2024EngineFuel system

I was driving down the highway in anchorage ak I heard a loud bang like a gunshot , when the vehicle was inspected I was told basically Evap, fuel system , fans , electrical , Cadillac converter exploded was the loud bang ! Serious issues have caused the vehicle to be inoperable !

NHTSA ODI 11615402

Working with the data? Download all 15 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 Chevrolet Impala verdict →