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What 124 owners told NHTSA about the 2018 Mazda Cx-90

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 (124)Crash / fire / injury (5)Engine (72)Electrical system (15)Transmission & drivetrain (13)Brakes (11)Fuel system (7)Driver assistance (4)Backup camera & sensors (3)Steering (3)Visibility & wipers (3)Airbags (2)

1 of 124 complaints match · Electrical system · crash/fire/injury only · clear filters

Jan 28, 2026Electrical systemFire

Passenger seat heater either had a grounding issue or shorted out, causing to seat to start smoldering and catching fire, destroying the seat. There has been recalls and lawsuits for this specific issue on this model in other years, but not for this model year.

NHTSA ODI 11713860

Working with the data? Download all 124 complaints as CSV · fetched from NHTSA July 10, 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 2018 Mazda Cx-90 verdict →