Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2016 Mazda CX-5 owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2016 Mazda Mazda CX5. The contact stated that on two separate occasions, the vehicle unintentionally accelerated without warning in an attempt to park the vehicle. On the first occasion, the vehicle drove in between two trees with the contact's foot on the brake pedal before the vehicle came to a stop. The air bags did not deploy upon impact and no injuries were reported. The vehicle was towed to an independent body shop where the vehicle was repaired for minor damage. The contact was also informed that no computer codes indicated any signs of a mechanical failure. On the second occasion, the vehicle crashed into a parked vehicle while again attempting to park the vehicle in a parking lot. The force of the collision caused the already hit vehicle to crash into yet another parked vehicle. The air bags did not deploy upon impact and no injuries were reported. …
The contact owns a 2016 Mazda CX-5. The contact stated that while driving 60 MPH, the vehicle failed to accelerate as intended while depressing the accelerator pedal. No warning light was illuminated. In addition, there was an abnormal rattling sound coming from the engine. The contact pulled over to the side of the road before the vehicle stalled. The vehicle failed to restart. The vehicle was towed to an independent mechanic who determined that the engine had failed due to a lack of maintenance. The contact stated that the vehicle was equipped with an automatic reminder regarding the oil change. The contact stated that the oil change reminder failed to illuminate to indicate that the oil level was extremely low. The check engine warning light also failed to illuminate. The vehicle remained at the dealer unrepaired. The manufacturer was not made aware of the failure. …
The contact owns a 2016 Mazda CX-5. The contact stated that while driving 70 MPH with the cruise control activated, the cruise control cancellation switch failed to operate as intended after several attempts or while depressing the brake pedal. No warning light was illuminated. In addition, the contact was able to deactivate the cruise control using the main cruise control power switch. The vehicle was taken to a local dealer to be diagnosed; however, the cause of the failure was not yet determined. The vehicle was not repaired. The manufacturer was made aware of the failure by the local dealer. The failure mileage was approximately 91,000.
I noticed smoke filling the inside of my car. I looked over at the passenger seat, and my coat was on fire. I poured my drink on it, pulled over, and threw the coat out of the car. I saw a large hole in the lumbar area of the passenger seat, and it was glowing red and putting out a lot of heat. The seat heater was on, so I immediately turned it off. It was obvious that the fire has started inside the seat, and there was no other fire source in car--ie. lit cigarette, lighter, etc. If someone had been sitting there, they would have serious burns. The seat will need to be replaced.
The contact owns a 2016 Mazda CX-5. The contact stated while driving at an undisclosed speed, the electric parking brake module warning light was illuminated and the "Brake failure. Vehicle unsafe to drive," message was displayed on the instrument panel. The vehicle was taken back to the residence. The failure occurred on several different occasions. The contact expressed concern that the brakes could engage while the vehicle was in motion. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was approximately 84,000.
While driving on a remote highway the seat heating was on on both the driver and passenger seat. After a while it felt way ti hot and smelled like something burning and found the passenger jacket (that was taken off and left behind his back to be extensively burnt. We stopped and checked the seat. We found a big hole and the seat was damaged as well as the 300 dls coat. Plus the risk of having burns I. The passenger back, which was only protected by the cost and other layers of clothing
We had another CX-5 in the back that we used to test whether or not it was either the throttle body or the BCM ( Body Control Module ) or the PCM ( Power Control Module ) not working that is causing your vehicle to not wanting to turn on The throttle body passed we transferred it over from vehicle A ( Being the donor ) to vehicle B (Being your vehicle ) and it was still doing the same thing which it would crank but not fully turn on and that is how we ruled that part out The BCM we also transferred over from vehicle A to vehicle B and same thing it would crank but not fully turn on This is what the mechanic at Mazda Collision Center of Irving stated: The PCM has power and is communicating with everything else in the vehicle. …
Repeated Failure and Rebooting of Mazda Connect Infotainment System I am the owner of a 2016 Mazda CX-5. The factory Mazda Connect infotainment system has developed a recurring defect in which the system repeatedly reboots to the Mazda logo while driving. Prior to complete failure, the navigation system became intermittent and Bluetooth connectivity frequently disconnected, requiring repeated attempts to reconnect devices. The system now continuously cycles through the startup screen, making navigation, hands-free phone functions, and system settings inaccessible. These repeated reboots occur while the vehicle is in motion and are distracting to the driver. The flashing and rebooting screen repeatedly draws the driver's attention away from the road and interferes with the use of navigation and hands-free communication features that are intended to promote safe driving. …
I buy this car 2 years ago and 3 months later is starting having problem with rear passenger brakes I took the car to the mechanic and he change disc and brakes pads. A couple months later is starting having the same problem in the same area but this time is was smell burn coming through the wheel I'm stop the car to check was is going on when I check the brakes it was very very hot. I take the car to the mechanic and he told me the EPB is bad he changed everything disc, brakes pads,caliper and EPB motor. He said try to don't used the EPB too much or I'm going to see you again with same problem ... So I'm stop to use the EPB for long time. One day I put my car in the carwash one guy hit the EPB when he's done with the car Im get inside I turn on the car and the brake warning light is starting flashing I say fu** not again and yes EPB get stock. …
smart key. during driving all the lights on the dashboard come on and the siren goes off and unable to have it turn off. After a period of time, its wears down the battery and it is no longer drivable. First time, it was towed to the AAA auto repair and they could not find anything wrong with it. The 2nd and 3rd time, AAA towed it back to Maita Mazda where we purchased it in good faith less than two months ago, and their service department could not find anything wrong with the electrical system. They replaced the battery the seond time, and the issue still occurred again when I turned it off. Then turned it back on as I needed to close the driver side window, and it would not turn on. No one seems to believe me, and we cannot get Maita to take it back and give us another vehicle in its place. …
Electrical complaints in other CX-5 years
Frequently asked questions
How common are electrical problems on the 2016 Mazda CX-5?
NHTSA has 71 complaints about the electrical system of the 2016 Mazda CX-5, 14% of the model year's 510 complaints.
Is there a recall for 2016 Mazda CX-5 electrical problems?
No. NHTSA lists no electrical system recall for the 2016 Mazda CX-5, though it has 4 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2016 Mazda CX-5 electrical problems start?
Half of the complaints with a recorded mileage happened before about 35,000 miles, and 37% before 25,000 miles.
Is it dangerous?
Owners linked 4 crashes, 5 fires and 3 injuries to electrical system problems on this model year. If you notice symptoms, have the car checked before driving further.
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.