There are 4 owner-reported brakes complaints for the 2017 Mazda Mazda6in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
On a clear lane with the forward car 5 car lengths away with traffic flowing, the Automatic Emergency Braking (AEB) activated slowing my car down from 65mph to 30mph. I deactivated AEB on my exit and changed the AEB distance from “normal” to “near”.
The part was purchased via Rock auto and installed at home DIY. The vehicle failed to return form "maintenance" mode for the rear parking brake. Took it to a Mazda dealer and they determined the Calipers were both manufactured incorrectly or the "spline gear" in the rear of the caliper that meshes to the Electronic Parking Brake actuator. This caused the parking brake to stay in maintenance mode, making it unusable for parking nor emergency braking, making the vehicle undrivable. It also caused Damage that incurred costs for parts and labor of the vehicle. The vehicle can still be driven and the only way to know its potentially unsafe is the light in the dash for the brake maintenance mode. At this time its unclear if this is the only issue with this part. Jason at Dynamic Friction technical support is investigating.
System failure: front and rear hydraulic brakes. Yes, the safety of the driver and passenger were put at risk. No, the problem was not confirmed by the dealer or service center. Why not? See below: a) As the brake components (brake pads) were assumed to be wear items and not covered under warranty, the brake components were replaced (brake rotors and pads) and the calipers were rebuilt. c) The brake service work was performed by the owner of the vehicle (complaint writer). There were no lamps/icons nor messages displayed to alert the vehicle owner of the malfunction. On June 05, 2021 while driving in the Traverse City MI area descending steep hills, it was noticed that the brake pedal required above normal force to slow the vehicle. In July 2021 with approximately 21000 miles, I disassembled the front and rear brake components to investigate the root cause of the brake performance decline. The front and rear calipers were observed to have very minimal caliper lubricant on the caliper pins and sleeves and evidence of corrosion. The front brake pads were worn approximately 50% and rear pads were worn about 90-100% (no friction material remaining). See attached files. New brake rotors and pads were installed and the calipers were rebuilt. On August 04 2021, I contacted the Mazda Customer Experience Center to advise of the brake system malfunction. Service Request Number 1-4195762982 was assigned. On August 26 2021, I brought the brake pads and rotors to Serra Mazda to advise/alert Mazda of the premature brake pad wear. The Service/Parts Director was given the brake pads in order that the components could be forwarded to Mazda for a "PQR" to be initiated. No response has been received. The vehicle has been serviced at Serra Mazda since 2018 and no statements were made to the vehicle owner that the brake pads were below the service limit.
ALL ROTORS, PADS AND CALIPERS NEED TO BE CHANGED AFTER ONLY 15,000 MILES ON THIS NEW VEHICLE. THE BRAKE SYSTEM IS UNRELIABLE ON THE HIGHWAY AND AT RISK OF LOCKING UP DUE TO RUSTING OF ALL COMPONENTS. THE CAR WAS PURCHASED IN MISSISSIPPI THEN HOUSED IN FLORIDA FOR 90% OF ITS LIFE. IT HAS NOT BEEN EXPOSED TO FLOOD OR EXCESSIVE STANDING WATER, NOR UP NORTH AT ALL. HTTPS://VIDEO.37483.NET/HOUGN3BG
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026