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What 21 owners told NHTSA about the 2017 Mazda Cx-30

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 (21)Crash / fire / injury (2)Fuel system (9)Engine (3)Electrical system (2)Speed control (2)Visibility & wipers (2)Airbags (1)Backup camera & sensors (1)Body & structure (1)Brakes (1)Fuel System, Other (1)

2 of 21 complaints match · crash/fire/injury only · clear filters

Aug 18, 2022AirbagsSpeed controlBrakesCrash

I put my right signals on and came to a near stop, as I did a right turn into the parking space in front of the dry cleaners. I was slowly creeping into the parking space, and pushing the brakes, as I slowed down to a near stop in the parking spot. All of a sudden, as my right foot was still on the brakes, I felt the car lurch forward, and felt myself pulled back into my seat from the velocity, as the car suddenly accelerated forward out of control! I had NO CONTROL OVER THE CAR! I saw myself speeding towards the drycleaners’ glass window storefront! I came to a stop after I had driven over the sidewalk, over some plants, and crashed into the pillar in front of the dry cleaners, completely pulling it off of its foundation. My car’s engine was still running, and the airbags did NOT deploy. This was a case of Sudden Unintended Acceleration where the airbags did not deploy, resulting is serious property damage, but could have been much worse had the pillar not been there to stop my car from breaching the storefront, and potentially hitting a customer or employee.

NHTSA ODI 11479983

Aug 2, 2020Body & structureEngineCrash

I WAS IN AN ACCIDENT AT A VERY HIGH SPEED. A DRIVER DIDN'T SEE ME IN HIS LEFT SIDE BLIND SPOT AND WAS VEERING INTO MY LANE AT 85-90MPH. I SWERVED TO THE LEFT TO AVOID THE CAR AND MY CAR WOULDN'T STRAIGHTEN/I COULDN'T GET BACK THE CONTROL. I SMASHED THE GUARDRAIL WITH THE WHOLE LEFT SIDE OF MY CAR AND THE CAR WAS DEEMED TO BE TOTALED BY THE INSURANCE COMPANY. THE AIRBAGS NEVER DEPLOYED DESPITE THE HIGH SPEED AND IMPACT OF THE ACCIDENT.

NHTSA ODI 11342747

Working with the data? Download all 21 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 2017 Mazda Cx-30 verdict →