Home · 2017 Mazda Cx-30 · Complaints

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 · Electrical system · clear filters

Nov 4, 2021Electrical system

I have had this happen multiple times. I try to turn off the car and it will not shut off. It makes noises and beeps, but you can do nothing to turn off the car. This makes the battery die. The first time I freaked out and called Mazda headquarters. They got a tow truck sent to me and my car was taken to Brown's Mazda in Fairfax. They told me the battery was dead and that is why that happened. I have had my battery checked by them numerous times and they say it is A-OK and 100% okay, so how can this be. It happened again and I drove straight to the dealer who told me it wasn't the battery but the starting system. They fixed it and I left and 20 minutes later it happened again. It has now happened again. One day my car is fine and the next it does not start. Then, after trying to start it again today. It went crazy and would not shut off. I was at the dealership recently and another woman had this problem. They told her it was the shifting gear and she had to pay a fair amount. This is ridiculous. This is a Mazda problem not an owner problem. No one seems to know what the real issue is or are afraid to tell. This needs to be looked into. The problem is Mazda owners never know when and where this will happen and it could strand us in bad locations with no recourse. There are no warning lights or messages and it happens at random times. It first started two years ago and has been happening repeatedly. The problem has been relayed to Browns Mazda on several occasions and they tell me it is the battery, but every time I get the battery checked it is perfect. Something is wrong and it is probably due to the electrical starting system which also affects the charging terminals. This is a serious issue and someone needs to take a look into this matter. Please help!

NHTSA ODI 11439428

Sep 27, 2017Electrical system

2017 MAZDA CX3. CONSUMER WRITES IN REGARDS TO AN ISSUE WITH VEHICLES BLIND SPOT WARNING SYSTEM. *LD THE CONSUMER STATED THE BLIND SPOT SYSTEM DOES NOT APPEAR TO BE OPERATING WELL. THE SYSTEM ONLY SEEMED TO REGISTER WHEN A VEHICLE WAS APPROACHED FROM THE REAR. LEFT AND RIGHT SIDE WARNINGS APPEARED TO BE WORKING AS DESIGNED. WHEN THE CONSUMER'S VEHICLE WAS DOING THE OVERTAKING NO WARNING WAS GIVEN. THIS IS THE SAME FOR THE LEFT AND RIGHT SIDES. UPDATED 09/27/2017*JS

NHTSA ODI 11029788

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 →