2014 Mazda CX-9 engine problems

What owners report

• “I purchased a 2014 Mazda CX-9 back in May of 2020 w/ roughly 60k on the dash. Literally 7 months later w/ about 72k on the dash, the day after Christmas I was driving to work (I worked in the next state over) on the highway my car just shut down. No warnings, no check engine lights NOTHING! It just completely shut off and would not turn on. Thankfully because of the holiday the highway was pretty empty and I was able to swing my car across the interstate so I wouldn’t get hit by oncoming traffic…”

  NHTSA complaint · filed 06/27/2024

• “The water pump failed causing water to mix with the oil and damage the head gasket. Estimates recommend replacing engine. The service engine light came on and we took it to our trusted mechanic right away. Got the estimates from two mechanics for this repair and then towed the car to Mazda dealer who confirmed the problem. We wrote to Mazda's corporate office and was told they would not fix it. My car has 68,000 miles and was regularly serviced. It is currently sitting dead in my garage. …”

  NHTSA complaint · filed 03/12/2024

• “I bought a vehicle from Carvana 11/2021 with not quite 59k on it. On 6/21/2023, with 77K miles, my car had a catastrophic engine failure. I was driving my grandchildren ages, 3-12 years of age home. Safety was definitely at risk with speeds of 70 freeway were completed right before engine stopping. The mechanic shop has confirmed the car giving 3 codes related to timing belt/water pump and the other code which confirms engine failure. No warning lights had come on until I tried to restart it. Si…”

  NHTSA complaint · filed 06/24/2023

• “Sudden failure of water pump located inside the engine caused engine to shut down immediately while driving 70 mph on busy expressway. Extremely dangerous situation due to heavy traffic and high speeds traveled. Only by sheer luck were we able to coast across 4 lanes of traffic to an exit ramp and barely make it into a parking lot after crossing 2 more lanes on the frontage road. Very difficult to steer and brake due to no engine power. Repair cost was $4,433. Two subsequent follow up repai…”

  NHTSA complaint · filed 11/26/2022

• “Water pump defect that led to pump failure, which led to catastrophic engine failure without any prior warning. The defect is in the internal chain-driven water pump. The pump is meant to circulate coolant through the engine while the engine is running. However, the defect allows coolant to leak from water pump into the oil pan and/or other engine components, mixing it with the engine’s oil and leading to destruction of the engine. Mazda’s internal data indicates that the company began receiving…”

  NHTSA complaint · filed 11/23/2022

• “- Water pump failed causing coolant to mix with oil. This repair cost was around $3,900. - Luckily this failure happened on our community road and was able to pull into our driveway. Mechanic stated that if this happened on the highway or regular road, this could have caused a major incident and possibly a blown motor. - No, but complaints of similar issues have been reported via my online research. - Just by the mechanic I had my vehicle towed to. - There was no indication of an issue until…”

  NHTSA complaint · filed 08/31/2022

• “I purchased a 2014 Mazda CX-9 on 12/14/2019. On Monday 10/18/2021 I was driving on the Hwy on the way home and my check engine light came. I had my mechanic check it out and he said the computer read a P0019 code. So on 10/20/2021, I took it to the dealer where I originally purchased it and this was the same code they found. At the local dealership, I was told that apparently, the water pump needed to be replaced due to water coolant in the oil pan. I had absolutely no warning. No leaking, no s…”

  NHTSA complaint · filed 11/03/2021

• “I PURCHASED A 2014 MAZDA CX NINE A YEAR AND A HALF AGO. THE OTHER DAY I WAS DRIVING AND I DON'T KNOW WHERE MY FAN GOT REALLY LOUD SO I PULLED OVER AND TURNED UP THE HEAT AND TURNED OFF ANY AC. ALL THE SUN STEAM STARTED COMING OUT OF MY ENGINE AND THE CAR DIED. AFTER TOWING IT TO THE LOCAL DEALERSHIP I WAS TOLD THAT I HAD TWO OPTIONS. I COULD EITHER BUY A BRAND NEW CAR OR PAY $13,000 TO HAVE IT REPAIRED. APPARENTLY THE WATER PUMP BROKE AND THE ENGINE SEIZED UP. I HAD ABSOLUTELY NO WARNING. NO LEA…”

  NHTSA complaint · filed 03/16/2021

Unverified owner reports from NHTSA's public complaint database.

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