2016 Mazda CX-5 engine problems

Filed May 28, 2026 · Engine · 131,860 miles · MI

The contact owns a 2016 Mazda CX-5. The contact stated that the engine light illuminated. The vehicle was taken to an independent mechanic diagnosed with a sensor failure and needing to replace a catalytic converter. The oxygen sensors were repalced.r was replaced by an independent mechanic. The vehicle stalled while reversing. The manufacturer was not notified of the issue. The approximate failure mileage was 131,860.

Filed Apr 28, 2026 · Acceleration, Engine · CA · crash

My wife was driving our 2016 Mazda CX-5, and was getting ready to pull into our daughters' driveway. My wife slowed down to a stop before entering the driveway. She gave the vehicle some gas to move forward. She stated that there was a pause, then the vehicle accelerated forward slamming into the garage door and the corner of the garage/house. There was also a Tesla parked inside the garage that was knocked back about a foot and a half. The distance from the edge of driveway and street to the garage door is about 27 feet. This happened at 1:30 PM. The weather conditions were great, sunny and dry. Thankfully, no one was hurt. If my wife was another foot to the right, she would have hit the support post for the upper balcony, and there would have been a good chance of the balcony falling on top of her. Or, if someone was standing in front of my wife when she entered the driveway, they could have seriously been hurt! There were no warning lights on prior to the accident. This happened last Sunday, April 19, 2026. We had the car towed to a local body shop on the same day as the accident. The vehicle was towed away the very next day to our insurance company's salvage lot in Bakersfield. I do have all the information, address and phone number, of the lot where our car was towed to. Hopefully, the car can still be inspected by the proper authorities. Thank you for your time!

Filed Apr 1, 2026 · Engine · CA

Vehicle was taken to an authorized Mazda dealership for 60,000-mile service; coolant system drained and refilled. Immediately after service, check engine light illuminated (P011A – engine coolant temperature sensor correlation issue). Dealership retained vehicle, drove ~300 miles, performed a second coolant flush; issue persisted. Dealer determined heater core clogged, attributed to coolant contamination/corrosion introduced during service. Another CX-5 at the same dealership experienced the same issue. Safety Concerns: Heater and coolant system failure may affect cabin comfort and engine temperature monitoring. Occurred immediately after authorized service, suggesting procedural or system-related defect. Noted in Mazda Technical Service Bulletin 07-007/19 as a known issue. Attempts at Resolution: Mazda offered partial goodwill assistance (~$775–$875) and assigned partial responsibility to the customer. Multiple attempts to escalate with Mazda Customer Experience (Case manager Betty) have not resulted in a satisfactory resolution. Dublin Mazda dealership service department, Mr. Frank Gozales (866‑502‑9912) mentioned original coolant by Mazda has caused this issue on 2016, and 2017 Mazda CX5 and is Mazda problem. I am requesting the federal safety agency review of this issue for potential defect or safety investigation.

Filed Oct 9, 2025 · Engine · ID

The vehicle's air conditioner expansion valve is defective/malfunctioning. While driving the vehicle with the air conditioning operating a loud whooting noise fills the interior of the vehicle. The noise sounds like the siren/hooting sound the police make when they want you to pull over or get out of their way. But the sound is loud and comes from inside the car jarring the driver and passengers. I purchased the car in early 2017 new. I first noticed the AC issue in the summer of 2018. I brought it up to Herzog-meir mazda (where i bought the car) when scheduling an oil change. they said they could not replicate it and so there was nothing they could do. I brought it to them at least 4 times with the same issue. Each time they sent me on my way and said they couldn't replicate it. I brought it up to Foothills Mazda in Spokane in 2023 and again they said that they couldn't replicate it and sent me on my way. This past august i had to schedule the car for an update covered by a class action lawsuit and had them look at the noise issue again. Prior to scheduling I has research online if others have had the issue and low and behold lots of mazda owners have. It is a known issue that mazda has created a "helpline" to deal with it. So I brought it up while scheduling it and asked to make sure they researched the AC expansion valve prior to my appointment (more than a month out). The Mazda lady that scheduled my appointment heard the noise several times with I was idiling the car and finishing scheduling the appointment. The first available appointment wasn't until Oct 1st so of course it wasn't hot enough outside to replicate the situation that causes the noise. Again, they charged my the diagnostic fee and sent me on my way. [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 14, 2025 · Electrical, Engine · 130,000 miles · OH

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 failure mileage was approximately 130,000.

Filed May 29, 2025 · Electrical, Engine · VA

Keyless entry stopped working, key fob battery replaced as well as car battery. Coolant issues. Heater core and sensors

Filed May 13, 2025 · Electrical, Engine · WI

The engine light constantly appears along with the "Schedule Maintenance Soon" light. Taken to dealership many times within my 3 month warranty and no definite reason was given.The vehicle rides very bumpy though sway bar was inspected and supposedly repaired by dealership during my 3 month warranty.

Filed Apr 18, 2025 · Engine · CA

Water pump failed causing coolant leaked into engine causing major engine damage

Filed Feb 25, 2025 · Engine · PA

The car engine is eating oil. There were no warning lights on the dash to indicate this. i happened to check the oil and it was 3 quarts low. This could have caused the engine to malfunction while driving if not caught in time. This started around 70K miles. Coffmans Service Center in Warminster, Pa has confirmed the car was spraying oil on [XXX] and performed a clean combustion chamber with iridium spark plugs, replaced intake manifold gaskets and PCV valve, and Ow-20 oil and new filter. I contacted the manufacturer on [XXX] case # [XXX] and it was dismissed. I did read online that this Mazda car has had a problem with eating oil around the 70K mile mark. The problem is still occurring. I read that there was a class action lawsuit against Mazda. [XXX] et al v. oil Mazda motor of America. However, the class action lawsuit doesn't include the 2016. I think it starts around 2021. I uploaded the receipt for the repair on an older complaint. the complaint number for that one is: 11627409. Currently there are over 450 complaints on the 2016 Mazda CX5 on the federal safety agency website. Can we get a recall on this? INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jan 7, 2025 · Engine, Fuel system · CA · crash

I was driving on a city street and slowed to turn right onto a driveway at at a private residence. As my car entered the driveway and near the end of the right turn, my car had a sudden unintended uncontrolled acceleration, continued the turn, went over a low hedge of shrubs on the right side of the driveway, continued down a short rocky incline, and landed on a large rock where the car stopped.