LED speedometer in dash showing incorrect speed or unreadable. Advised of chip malfunction.
NHTSA ODI 11604636
Home · 2017 Mazda Cx-30 · Complaints
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.
2 of 21 complaints match · Speed control · clear filters
LED speedometer in dash showing incorrect speed or unreadable. Advised of chip malfunction.
NHTSA ODI 11604636
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
Working with the data? Download all 21 complaints as CSV · fetched from NHTSA July 10, 2026