Engine complaints by model year
Mileage when the problem started
What owners report
On December 26, 2022, after running errands for an hour or so and parking outside in parking lots, I restarted the car and pulled out of a parking lot. 3 dashboard warning lights flashed, one after the other: Engine malfunction, have vehicle inspected; Dynamic stability control malfunction, have the vehicle inspected; Safety and driver support systems partially disabled, drive safely. Vehicle was stuck in high gear and would not shift to lower gear as I pulled into the driveway (fortunately I was close to home), forcing me to have to floor the gas pedal to go up the very slight driveway incline. Dealership thought they fixed the problem, exact same thing happened on 12/28/22 (same dashboard warnings, stuck in high gear) when we were on the highway. Car was barely able to make it up the exit ramp in heavy traffic, could easily have been rear-ended. …
There have been 3 different ongoing issues. The car was ordered and delivered brand new in April 2022. At 4,000 miles and again at 12,000 mile is would display low oil and require 1 quart of oil. The dealership acknowledged that it has an oil consumption issue, unresolved. I have to bring it in every time it is low prior to its required oil change time/miles. At 19,742 miles the cars battery died. They replaced it an have no reason why it died. Every time I'm driving in the mountain pass the transmission will not advance above 3rd gear. The engine will whine and I have to put it into manual and move it to 4th and or 5th gear. When I coming down the other side of the mountain, I have the same issue with it only advancing to 3rd and not proceeding to 4th or 5th. Then when I reach the bottom and on flat road the message- safety system and deactivated. This last for apx 10 minutes. …
The contact owns a 2021 Mazda CX-30. The contact stated that while the contact's wife was driving at an undisclosed speed, several unknown warning lights illuminated. The contact stated that the vehicle decelerated to 20 MPH. The contact's wife drove the vehicle to a safe location and parked the vehicle. The vehicle was towed to an independent mechanic, but the mechanic was unable to duplicate the failure. The contact stated that the independent mechanic reset the codes and the vehicle operated as intended; however, the failure recurred. The vehicle was taken to the dealer and the contact was informed that the battery needed to be replaced. The battery was replaced but the failure reoccurred. The vehicle was taken back to the dealer where it was diagnosed with a failed MAP sensor. The contact was informed that the MAP sensor needed to be replaced. …
The contact leased a 2021 Mazda CX-30. The contact stated that the vehicle had failed to start up after multiple attempts with several unknown warning lights illuminated on the instrument panel. The contact stated that an unauthorized independent tow company towed the vehicle to a dealer two hours away from her home and that the vehicle was stolen from the dealer's lot. A police report was filed. The contact then stated that the vehicle was recovered and returned to the same dealer. The battery was replaced, and the vehicle was towed to an auto body shop to repair the damage to the vehicle. The manufacturer was notified of the failure but offered no assistance. The vehicle had yet to be repaired. The failure mileage was 2,100. The VIN was not available.
The car was running in parking garage without ignition being turned on. When I entered the car, the motor wouldn't catch at all, and message popped up saying the there was a brake malfunction. All the lights were on, so it did not seem to be a battery problem, but the drive function was dead. Several months ago the car started racing while i was driving and i couldnt get it to stop. I finally, while still driving, turned off the ignition and rolled off the road. After a few minutes, i restarted the engine. it had stopped racing and i drove it to the Mazda dealership. They didnt find anything wrong. So this latest incident, Jan. 3rd, involved an uninitiated running vehicle that was parked, and the brake malfunction console notice that said "brake malfunction". …
I bought Mazda CX30 in 2020 and the battery already starts to fail. The engine light and the battery light are on suddenly when I was driving. Then, after a while, when I restart the engine and it starts to work again. However, it happens for two times within a week. I have sent the car to the Auto Zone and the nearby car auto repair company to check the car. However, they said they cannot detect anything as the engine light and the battery light are on again this time. It is so dangerous when the car suddenly stop in the middle of the road when I was driving. I am so lucky that this accident happened during rush hour and there were heavy traffic.
Frequently asked questions
Which Mazda CX-30 years have engine problems?
By NHTSA complaints, the 2021 (49), 2022 (9) and 2020 (6) model years. Engine complaints make up 49% of all complaints for the 2021.
Is there a recall for Mazda CX-30 engine problems?
No. NHTSA lists no engine & cooling recall for any Mazda CX-30 model year. A widespread problem may still be covered by an extended warranty or a manufacturer service bulletin, so ask a dealer.
At what mileage do Mazda CX-30 engine problems start?
Across all years, half of the complaints with a recorded mileage happened before about 27,000 miles; 100% happened before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.