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What 49 owners told NHTSA about the 2021 Mazda Mazda3 Sedan

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 (49)Crash / fire / injury (4)Engine (18)Driver assistance (7)Electrical system (6)Airbags (4)Brakes (4)Lane Departure (3)Transmission & drivetrain (3)Body & structure (2)Fuel system (2)Speed control (2)

1 of 49 complaints match · Airbags · crash/fire/injury only · clear filters

Jun 11, 2022AirbagsCrash1 injury

The vehicle was badly rear ended and the airbags didn't deploy. The dashboard indicated an "airbag malfunction" after the collision happened. The failure of the airbags put myself and my passengers at serious risk; if we weren't wearing our seatbelts, which we were, we would have been gravely injured. The vehicle is less than a year old and still under warranty.

NHTSA ODI 11468801

Working with the data? Download all 49 complaints as CSV · fetched from NHTSA July 18, 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 2021 Mazda Mazda3 Sedan verdict →