2014 Mazda CX-9

The car started creating a noise like air was leaking when i apply brake. The problem continued to increase, and braking became harder and harder. The dealer indicated that I had to replace the brake booster. This is a 2014 CX-9. A NHTSA search showed that vehicles manufactured in 2013 were affected. My car was purchased in Feb 2014. I suspect this one too had that faulty equipment.

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 repairs for check engine light and oil control valve issues related to water pump failure were required and covered under initial repair warranty. Research on web indicates this is a common problem with this engine with many complaints occurring soon after 100k miles. In many cases customers reported having to replace the engine or sell the car for parts due to the high cost of repair. Locating the water pump inside the engine block was a terrible design fault and extreme safety hazard when it fails.

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 reports of premature water pump failures in vehicles identical to mine (mine is a 2014 Mazda CX-9) by at least June 2007, yet Mazda continued to sell the vehicle without fixing the defect and failed to warn customers of the defect. The owner's manuals say nothing about water pump maintenance because the water pump should last the life of the Mazda vehicle. My water pump failed and destroyed my engine at just a mere 72,400 miles. The water pump problem is caused by the elastomer bellow, which is made with hydrogenated acrylonitrile butadiene rubber, which is damaged by hot coolant. Due to problems with the seal, coolant leaks into other components because the water pump is located above the crankshaft. An engine will allegedly fail once coolant mixes with engine oil and travels through the engine. Mazda allegedly has done nothing to fix the water pumps and won't recall the vehicles to offer free repairs. The automaker is also not reimbursing owners who may pay thousands of dollars for repairs related to failed water pumps. When I took my CX-9 to my Mazda dealer because it was leaking coolant, the dealer informed me I needed a new water pump but then said that because of that they should just replace the engine, for a total cost of approx. $9,000. Dealer gave no explanation of why it concluded before looking inside engine or at timing chain why I must buy a new engine because of bad water pump. Clearly dealer knew defect was the reason but withheld that info. That's fraud

- 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 the water pump failed.

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 smell of coolant. This vehicle only has 88,000. Upon further research and to my surprise is that the water pump in the Duratec 37 engine and make and model has a design flaw with the water pump located in the engine with the timing chain. That is the number one problem that fails first due to the water pump gaskets wearing degrading without any warning pump has become damaged due to pump bearings too. I had my vehicle serviced with four oil changes over the past 28,000 miles since I purchased it. These late-model vehicles being built today I know do not burn that much oil nowadays. I also found out, the iVCT 3.7 Duratec is in the 2008-2015 Mazda CX-9 which I have the 2014 model. This 3.7 V6 uses a timing chain-driven water pump. I also found out this kind of water pump is prone to failing at the pump bearings which allows the timing center to move around. Once it’s bad enough coolant is dumped into the engine where it mixes with the oil dripping from the water pump into the oil pan. This is where the real problems begin. Coolant mixing with oil is not good. It can cause corrosion and lots of internal wear as the Duratec 3.7 engine oil is no longer able to properly lubricate moving parts and shut down the engine. Base on the number of oil changes I had during this time I'm sure it had nothing to do with the water pump failure issue. This is solely a Mazda manufacturing flaw with the design. At this time my warranty does not want to cover the repair. Thanks

OUR 2014 MAZDA CX-9 POWER BRAKE BOOSTER HAS GOTTEN PROGRESSIVELY WORSE OVER THE LAST FEW MONTHS AND HAS NOW FAILED AT 75,269 MILES WHERE THE PEDAL IS SPONGY, PEDAL TRAVEL IS LONG AND THERE IS A HISSING NOISE (AIR LEAKAGE) FROM THE POWER BOOSTER, ALL RESULTING IN SEVERELY REDUCED BRAKE EFFECTIVENESS - VERY LITTLE. WE CANNOT SAFELY DRIVE THE CAR. THIS IS THE SAME FAILURE AND SAFETY DEFECT THAT WAS THE SUBJECT OF ODI INVESTIGATION PE-14-005 (ODI CLOSED 2/10/2014) INVOLVING 2007-2013 MAZDA CX-9 VEHICLES IN WHICH THE ODI RESUME SAID "THE AGENCY WILL CONTINUE TO MONITOR COMPLAINTS AND OTHER INFORMATION RELATING TO THE ALLEGED DEFECT AND TAKE FURTHER ACTION IN THE FUTURE IF WARRANTED." IN THAT CASE, IN ORDER TO AVOID A RECALL, IN MARCH 2014 MAZDA AGREED WITH THE NHTSA/ODI TO EXTEND THE WARRANTY FOR 7 YEARS OR 100,000 FOR THE 2007-2013 MAZDA CX-9 VEHICLES AND REPAIR THE CONDITION AND INITIATED SPECIAL SERVICE PROGRAM SSP93. THIS NOW IS EXACTLY THAT SAME CONDITION BUT IN THE NEXT YEAR MODEL - A MODEL 2014 MAZDA CX-9 MANUFACTURED IN 2013 THAT OBVIOUSLY RECEIVED THE DEFECTIVE POWER BRAKE BOOSTER THAT WAS MANUFACTURED BEFORE THE BOOSTER SUPPLIER CORRECTED THE FAULTY BOOSTER MOLD IN FEBRUARY 2013. YESTERDAY (4-29-21) MAZDA SAID (MAZDA CUSTOMER SERVICE REFERENCE # 1-378914617) OUR VEHICLE IS NOT COVERED FOR THE REPAIR BECAUSE THE NHTSA/ODI AGREEMENT AND SSP93 ONLY APPLIES TO 2007-2013 VEHICLES WHERE OURS IS A 2014, EVEN THOUGH IT WAS MANUFACTURED IN 2013. THIS IS NOT ONLY ANOTHER EXAMPLE OF THE SAME PROBLEM NOW EXISTING IN 2014 MAZDA CX-9'S WITH A POWER BOOSTER MANUFACTURED BEFORE THE FEBRUARY 2013 FAULTY BOOSTER MOLD CORRECTION, IT IS UNCONSCIONABLE FOR MAZDA TO REFUSE THE REPAIR. PLEASE - WE NEED YOUR HELP IN RESOLVING THIS - AND NEED YOU TO RE-OPEN THE INVESTIGATION FOR THE SAFETY OF OTHERS. THANK YOU.

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 LEAKING, NO CHECK ENGINE LIGHT, NOTHING' I LATER FOUND SEVERAL REVIEWS SAYING THIS WAS AN ISSUE WITH THIS MAKE & MODEL. I STILL OWE OVER $16,000 ON THIS CAR AND NOW I HAVE TO GET A NEW CAR.