2016 MAZDA CX-9 Engine Problems

I own a 2016 Mazda CX9 Touring FWD (180k miles). Today my car was diagnosed with cracked cylinder head, resulting in coolant and oil leak from the head gasket. While there is a class action settlement about it where Mazda accepted the manufacturing defect, they do not cover the engine repair/cylinder head replacement because my car's mile is over 120k. If it is a manufacturing defect, why year/mile make a difference on the responsibility of the manufacturer? Mazda obviously sold defect vehicles to their customers, and driving these vehicles under this condition is very dangerous! Now, they are expecting me to pay more than $10,000 for a vehicle priced around $6,000!

In June of 2022 I started having a strong antifreeze/engine coolant smell inside the cab of my vehicle and also outside the vehicle. I had the car checked for a radiator leak, but there wasn’t one. I took my car into my local Mazda where they found that the engine coolant was leaking into the heads of the engine. Mazda kept my car for 5 months and repaired the problem, it cost me $4000 and they had added a 12 month 12,000 mile warranty for the parts. My car is a 2016 Mazda cx-9 at the time of the repair it had 70,430 miles on it. Now a few years later I am having the same issue with the coolant smell inside the cab and outside my vehicle, it goes into the shop for diagnosis on Monday November 10,2025. The car now has 118,000 miles on it. I had purchased an extended warranty for the car at the time of purchase but it had timed out a month before I took my car in for the first repair….please Mazda stand behind your vehicles I am a senior woman with very little income and I will not be able to pay out of pocket for this repair and I CANNOT afford a new car… I would like to get reimbursed for my out of pocket on the first repair and get my car repaired this time as well under a warranty.

Cylinder head crack. Combustion gasses leaking into coolant causing overheat. Combustion gasses bleeding into oil causing excessive crankcase pressure.

Engine failure with crack in the engine after a loss of coolant fluid.

Head gasket leaking and caused major engine issue at 89,000 miles. Mazda has known of this issue, but refuses to recall it.

While my wife was driving her 2016 Mazda Cx-9 Grand Touring on the freeway, many of the dashboard indicator lights came on warning her the engine was over heating and to pull over immediately. While she was attempting to move over to the shoulder, smoke appeared from underneath the engine hood which made it difficult to safely move over to the shoulder. She believed the car was on fire so immediately exited the vehicle along with her sister whom was pregnant. I arrived within minutes and noticed the engine compartment was smoking and coolant/engine oil leaking underneath the car. The car was towed to my local Mazda dealership where I was advised days later the engine needed to be replaced due to blown head gaskets. They advised the vehicle over heated causing oil and coolant leaking from cylinder head that is warped. This repair would cost $11, 179.29. Mazda service advisor also mentioned the radiator and lower/upper radiator hoses needed to be replaced. This repair would cost $2691.28. This incident could've resulted in serious injuries or death from a known issue with these engines by Mazda. It's only a matter of time before this failed engine turns into a fatality. Do the right thing Mazda and fix these engines. Your reputation is on the line.

Sudden and dramatic loss of engine coolant. Received a warning that engine was overheating, and to shut off engine. Quickly obeyed the prompt and found that most of the engine coolant had been lost due to a catastrophic failure of either the head gasket or head itself.

Cylinder head coolant leak. No warning lights.

1. What component or system failed or malfunctioned, and is it available for inspection upon request? The entire electrical system is malfunctioning. All dashboard service lights (check engine, ABS, etc.) illuminate simultaneously, causing the vehicle to stutter and shut off while driving. The vehicle is available for inspection. 2. How was your safety or the safety of others put at risk? This issue has resulted in a dangerous situation, particularly when the vehicle lost power on the highway with my young children aboard. This sudden loss of control could have led to a severe accident. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? Mazda’s service department has not been able to reproduce the problem despite multiple visits. I have provided video evidence, but no conclusive diagnosis or resolution has been achieved. 4. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? Mazda’s authorized technicians have inspected the vehicle several times, but no substantial action has been taken. The vehicle has not been inspected by police or insurance representatives. 5. Were there any warning lamps, messages, or other symptoms of the problem prior to the failure, and when did they first appear? All dashboard lights come on simultaneously without prior warning. The symptoms have been random and intermittent over the past few months. Given the ongoing risk, I request an immediate replacement of my vehicle. Please confirm receipt of this complaint and provide a plan for replacement. Thank you for your prompt attention.

August 2nd I noticed a smell of Coolant coming from my car. I looked under my car and noticed it leaking green coolant. I took it to Mazda where they had it for 7 days to then give me a $6,300 estimate with possible added expenses. They diagnosed it as a cracked cylinder head and needs a gasket as well. I am a single mother and have work but I cannot afford that repair especially since Mazda is not going to honor there vehicle and what they stand by. With this issue with the coolant leak and the cracked cylinder the vehicle could have overheated and go into limp mode and come to a sudden stop with my children in the car while driving on the road. I could be hit as this puts my family at risk of injury while we go to school or work. Mazda has done nothing but tell me to submit a claim with customer service which I have. I had my case manager call me once and left a voicemail and I have called multiple times and have not heard back. There was no warning of this until I found forums and other stories that this unfortunately has happened to hundreds of Mazda owners.

Coolant sprayed on top of engine

Our 2016 Mazda CX 9 began leaking coolant and we took it to a shop who diagnosed it as coming from the cylinder head, requiring a very expensive repair or new engine. Luckily our engine did not sieze up while driving, but it easily could have with our baby and toddler in the car. Upon searching the internet I found countless reports from other CX 9 owners who experienced the very same issue at similar mileage ~50k-70k. There is a technical service bulletin for this issue, but they have not issued a recall. This very expensive repair is going to set us back significantly and is a financial burden we were not expecting from our well cared for vehicle. It seems Mazda knows about the issue and is unwilling to address it.

Cracked cylinder head causing coolant to leak.

2016 Mazda CX-9 is leaking coolant from exhaust side of engine cylinder head. This issue has been confirmed by a Mazda dealership in North Charleston, South Carolina. The issue first appeared shortly after replacing the water pump (performed by the same dealership). The issue is known and documents on Mazda TSB 01-002/23 - COOLANT LEAKS AT CYLINDER HEAD. The safety of my family was put at risk as there was no indication of a cracked head until there was coolant leaking on the driveway. Should the car have overheated without the indication of a coolant leak, the car would have been placed in to limp mode. Prior to the leak, there were no warning lamps or messages indicating the issue. Further, the Mazda dealership did not detect the issue at the time of replacing the water pump.

Vehicle had a horrible coolant leak at the rear of the engine to find out the engine has a weak cylinder head and is known to break and leak coolant. The vehicle will need a new cylinder head or engine replacement.

A month ago, I experienced a coolant leak at the back of the engine compartment. Upon researching I found that the head was prone to crack at the turbo and produce the leak. I took to my dealer, and they confirmed that it was in fact a cracked head causing the coolant leak. They also confirmed it was a known Mazda problem on the 2016 and newer 2.5 liter turbo engines. The dealer fixed four in the last month and one on a car their salesman purchased that the head failed at only 2000 miles. I was quoted a cost of $5965 for cylinder head replacement. It seems extremely excessive for a new cylinder head and a more appropriate price for a completely new motor. If this is a known defect on this motor no matter the miles, it seems Mazda should correct this problem in or out of warranty.

Engine head cracked. Known problem with a tsb issued

My car has a cracking cylinder head and is leaking coolant.

2016 Mazda CX-9 2.5L Turbo Touring with 93,197 miles. In September of 2022, I noticed a sweet smell coming from the engine bay after coming home from work. I took my car to my mechanic on 9/30/2022 for an oil change and asked if they could figure out the "sweet smell" coming from the engine bay. When they were doing the oil change, they checked for leaks and noticed that coolant was leaking from cylinder head. Since it was out of warranty, I had my mechanic repair the issue. Which resulted in a complete cylinder head replacement. This is a know issue by Mazda and there is lots of documentation online for this as well. There has since been updated parts to repair this issue, but this should be a recall covered by Mazda. Cause this repair cost me $5,700 out of pocket.

We noticed anti-freeze leaking from our car a couple of days ago and immediately brought the car to our local mechanic. The mechanic determined that one of the cylinder heads in the engine was cracked and was leaking anti-freeze. He said the car was unsafe to drive. He also told us that a TSB had been issued by Mazda for this problem ( Bulletin No 01-002/23, issued 02/10/23). This bulletin states "Residual stress generated during production in the cylinder head material may be greater than expected. The external force from the exhaust system when driving over bumps may cause unexpected force to certain areas of the cylinder head". Had we not noticed the leak, the engine could have overheated, causing the engine to seize at any time, any place. which could have led to a dangerous accident. An accident that could have occurred on a major highway and could have involved other vehicles as well. Our car has just under 80,000 miles, has been well maintained and garage kept. I do not understand why a manufacturing defect such as this - which could lead to engine failure is not a mandatory recall by the manufacturer. We should have been warned that this could happen and mazda should be responsible for the cost of the repair. It is an engineering design flaw of the vehicle!

Vehicle “surges” at idle. 300-500 RPMS at a time. Sometimes the brakes hold and sometimes not. Have nearly been in 3 collisions the last 2 days because of this issue. The ECM codes indicate throttle body or TPS issue, both of which have been unfounded. Vehicle has 63,000 miles. Researching this topic online found that many others have had this issue with no associated safety recalls noted. I am hoping to bring light to this so someone doesn’t have to be injured or killed to have this rectified.

Cylinder head had a crack in it and had to be replaced.

The car started to overheat so we added coolant and then the car started to stall had our mechanic look at it and he said the head gasket needs to be replaced. How is this not a recall

The intercooler failed or failed cylinder head causing coolant leaking into the exhaust side and cause the engine to over heat.

Engine is leaking coolant. Took the car to Horne Mazda of Avondale dealership for inspection, was told coolant is leaking from cylinder head. Was told the engine overheated and both cylinder head and cylinder block warped and will need to replace the engine. I feel my safety and others were at risk because the car could have lost power and stalled in the middle of roadway at any time due to there was no symptoms of my car engine overheated, car was running as normal, no check engine light, coolant temperature gauge did not show it was overheating, no sign of engine loosing power, no smoke from under the hood, no sweet smell or any indication engine is loosing coolant and overheating while driving. It appears to be a slow leak because coolant reservoir still have coolant above minimum level. First sign of coolant leak was notice during first week of October 2023 when small amount of green fluid was found on garage floor, took car to dealer on Oct.12.2023 for inspection. MazdaUSA refused to cover engine replacement under paid Mazda Extended Confidence warranty (MEC), blaming it's owners fault for operating car while engine overheated and refused to provide written copy of inspection details.

While driving, engine suddenly overheated due to coolant leak from cracked cylinder head. This was a known issue per the TSB 01-002/23. See attached. Vehicle only has 55k miles and has been maintained, only requiring oil change, topping off of fluids, and filter changes. Dealership has determined that it will require a completely new long block. Mazda USA is currently only willing to cover a small fraction of parts costs, requiring me to pay the remaining parts and all labor costs.

Car started running rough and losing power intermittently. After arriving home and parking the car, a puddle of coolant started at the rear of the engine. Online research indicates this is a known issue for the 2016 CX-9. Head gasket failure causes coolant leak from back side of engine at the head gasket. Coolant is still leaking 24 hours later without the car being run.

I have taken the Mazda CX9 since I bought it new to service at Mazda every 6 months or 5,000miles as suggested. Two years a new engine was required due to overheating and coolant problem which the service man noticed 5 months prior during service appointment but didn’t suggest doing anything. Now two years later new engine they installed overheated also.The Mazda has never been in a wreck of any sort. The Mazda has 86,000 miles on it only. How can a car have 2 engines fail in 7 years when it has been serviced there at the agency punctually as required?

Coolant leak. Needs new motor to fix issue.

The car has 75K miles on it and has always been maintained by either Mazda or independent garages. Engine overheating, took car to Mazda specialist and found the engine cylinder head is cracked. This is a known issue with this type of Mazda engine and Mazda has published a TSB which I attach. Car is unsafe to drive as coolant may leak completely at any stage and leave myself and family stranded. The cost of the fix exceeds $6,000!

I just had my engine replaced due to a cracked cylinder head that allowed coolant to leak into cylinder #3 & #2.

Crack cylinder head

Cylinder head crack/failure required the replacement of the entire engine on my 2016 Mazda cx9, the odometer was only at 85,000km. The crack Resulted in loss of coolant and overheating, the indicator on dash stating to pull over and shut the car off. This could have resulted in engine seizing if I was unable to safely pull over. This is a know issue by Mazda, the dealership has seen this issue before, there is lots of documentation online for this as well. There has since been updated parts to repair this issue, This should be a recall covered by Mazda. No car should require an entire engine replacement at 85,000km. This repair cost me $7700 out of pocket.

First radiator blew (after noticing the temp gauge higher than normal and fan running a lot), and when replaced, the 2016 Mazda CX-9 continued to leak coolant. Took it to dealership to find out engine cylinder cracked and head gasket. A simple google search finds that so many Turbo Mazda’s between the years of 2016-20 experienced this design flaw as well. Mazda would not cover any of it since the car was out of warranty. It costed me over $7,000 to repair radiator and engine.

My 2016 Mazda CX-9 2.5l Touring has approx 67,500 miles. I noticed the "sweet" smell of coolant after driving. The temp gauge was not showing signs of overheating. I checked under the hood and coolant level in radiator and reserve tank were normal. I also did not see any coolant leak/patches under the car. Few days later the car temperature gauge shot past the 1/2 mark. i stopped the care let it cool and checked under hood. radiator was empty but reservoir tank was still full. there were signs of coolant drips underneath car on the plastic cover below the area of the water pump (passenger front wheel side). waiting to have car assessed/fixed by mechanic.

While driving on the freeway in stop and go traffic the engine warning light came on. A few minutes later the data screen stated that I needed to pull over immediately as my engine was overheating. I was on a stretch of the 5 freeway north of Oceanside with no exits for several miles. I pulled over and when the light went off I got back on the freeway to try to make it to an exit. I repeated this process until I was able to exit and pulled in at the first mechanic I came to. The vehicle was losing power at that point. Pulling in and out of the traffic was hazardous to both me and the other drivers. When they inspected my car, they determined that the coolant had been leaking for a significant period of time as demonstrated by the worn spot on the pipe it had landed on. Further inspection revealed a blown head gasket. When a new head gasket was ordered from the local Mazda dealership, the mechanic was surprised to learn that Mazda had four of these parts in stock as most dealerships would have to order the part. The Mazda service department told him that they had four head gaskets in stock because this happens pretty often. My research on this site and on the Mazda forum indicates that this is a known defect to Mazda. This vehicle has just over 56,000 miles on it. It is regularly serviced. There was no warning light prior to this incident, in fact, the blue light indicating the engine was cool had regularly appeared whenever I started the vehicle. I have the replaced head gasket in my possession, should inspection of the part be necessary. I have reported this issue to Mazda but have been advised it is unlikely they will reimburse me.

Head gasket blew in a 2016 Mazda CX9 while driving causing us to as safely as possible quickly get off the road from the middle lane of an interstate. This is from a known coolant leak in the cylinder head from service bulletin 01-013/21.

My engine head cracked whiling driving. sudden lost of complete power in houston texas at a 75mph speed. Was able to safely pull to the side. took it to the dealer where they confirmed it was a cracked engine head. Its a common issue with this model from 2016-2019 no warning light came on just lost 90% power. was able to restart and drive the 7 mins to the dealer.

Car overheated. check front engine and could not see any visible leaks. check all around the engine and found coolant leaking from the back of the engine. confirm by dealer that is leaking at the cylinder head.

At an intersection the engine stalled and car was extremely hard to restart (took several minutes). I later noticed oil and coolant dripping from the engine and coolant mist/vapor from the exhaust. Later I learned it was possibly related to Mazda's own TSB Bulletin No: 01-013/21 where a manufacturing defect caused coolant to enter the combustion chamber and hydro lock the engine (where I stalled and had hard time restarting). I had to have the car towed home. At home I noticed the passenger underside of the vehicle coated with oily/watery residue of possible oil or oil/coolant mix. Vehicle had 66K miles on and Mazda dealer refused to fix.

I am being told by the dealership service center that there is a coolant leak from the engine. A previous coolant look due to a hose was repaired but this is a separate issue related to the TSB for coolant leak at the cylinder head Bulletin 01-007/22

Cracked Cylinder Head due to Coolant Leak - SB 01-013/21. This is a known issue with Mazda, yet it has happened with the vehicle being serviced regularly. This is happens directly after the warranty period and it is not being covered.

A strong coolant smell was noticed in the interior of the car and from the engine compartment. The diagnosis from the Mazda service facility was that there was coolant leaking from the head on the engine. Eventually this would have led to overheating of the vehicle which could have resulted in significant engine damage. The manufacturer has issued a technical service bulletin (TSB) for this problem. Cracking of the head that leads to coolant leaks is a known problem with this engine in several different models of Mazda including CX-5, CX-9, and Mazda 6. Our vehicle has remained in the shop since it was taken in on 11/8/2022.

Due to Mazda's known problem in the design of their engine at just over 80,000 miles the head and turbo of my engine have cracked. They have issued a service bulletin to their dealerships, which acknowledges this as a common problem. (Technical Service Bulletins (TSBs) are official communications between Mazda & its dealerships that describe processes for troubleshooting or fixing certain common problems.) Unfortunately, for most Mazda CX-9 owners this bulletin was issued after most have just passed their 60,000-mile warranty, thus allowing them to get away with designing an engine for a fairly expensive car that is only good for 80,000 miles. Mazda further acknowledges this as a problem as newer engines are no longer designed the same way to avoid the problem and any parts put on the engines that are failing are of the new design because the OEM parts will just fail again. Dealing with Mazda customer service is a joke, they are rude, refuse to answer questions and will not call you back with answers when they say they will.

The cylinder head has cracked and it leaks antifreeze. This can cause the vehicle to overheat and destroy the engine. It is apparently a known issue as Mazda has issued 3 technical service bulletins addressing the problem. They have even redesigned a new part to replace the faulty one. In the TSB they even address that the crack may be caused by "stress generated during production" In other words, its a known problem yet they havent issued a recall on it. Im guessing they havent issued a recall because the quote for the repair was $5000. At $5000 to repair the faulty part it would be quite the expensive recall for the company.

My Engine is over heading because it has a crack and losing coolant externally. There are 74773 mills on my car. Every 3 weeks I have to put a gallon of coolant in the engine. if I don't put coolant, the engine can stop working on the freeway causing bodily injury to me and other drivers.

Engine Coolant Leaking from rear of engine near Exhaust / turbocharger at Cylinder Head. No Warning Lights indicating problem until coolant level low causing overheating and fire risk. Rear Brakes not releasing completely from "City Mode" where brakes are kept close to rotor "to increase braking response in City driving" - causes premature brake wear, warped brake rotors (reoccurs within 10K miles from new / replaced rotors) Front Bumper Fascia keeps coming loose at clips near headlights on both Driver and passenger side. Had replaced at dealership 3 times, but continues. Bumper coming loose and can obstruct headlights while moving around at highway speeds

2016 cx9, after reviewing online. Known issue with coolent and engine cylinder. Water coolent leak to engine head. Dealer asking 75k to replace engine. Mazda refused to acknowledge the known issue.

On 04/21/22, I took my car to the dealer after noticing antifreeze on our garage floor and a burning smell. NO check engine lights had illuminated. They proceeded to tell me that there was a coolant leak from head/block and cavity leak (something about channel pressure). They also stated this was a casting flaw during manufacturing of the engine. They told me I needed a whole new engine for $8,479.97! Mazda corporate refused to replace the engine at their cost because I had 64,575 miles on it and it was out of powertrain warranty. I called them and asked to speak to a supervisor and never heard from them. I called on 4/26, 4/27, 4/28, 5/4, 5/5 (5 times), 6/9, & 6/20. I finally gave up agreed to pay $7,479.97 (the dealer gave me $1,000 off). I received the car back on 05/20 and it would not start later that day. They towed it back to Mazda and they replaced the crankshaft sensor that was damaged upon install of the new engine. I received it back again on 05/31 and later in the day, the check engine light came on and the automatic braking system engaged while I was driving (thankfully only 40 mph). I managed to pull over in a turn lane before the engine died. I was so thankful I did not make it onto the interstate I was about to enter! Mazda came and picked me up and later got my car. They could not figure out why it was dying and finally got it to recreate it. They replaced another engine sensor and then drove it a lot to make sure it was truly fixed. I finally received my vehicle back on 07/07. I am afraid to take my car out of town and it makes me nervous it will die and automatically start braking again. They KNOW this is a manufacturer issue and they refuse to take responsibility. I am so disappointed in them. This is a huge safety issue. I am also lucky I didn't blow a head gasket before I took it into the shop the first time.

Traveling on the highway going on a road trip. Had vehicle inspected prior and no fuel system problems were noted. I was going 75mph with my family when there was a coasting feeling in the car. I looked and my check engine light popped on and my car immediately would not accelerate and we quickly lost speed. By the grace of God were we able to pull over safely! Code P0132 was the engine code and after an hour, the engine light went back off and we were able to keep a safe speed traveling home. After speaking with a mechanic and dealership, I learned that this was a common problem with the Denso fuel system. My vehicle was not included in a recent recall that included a different year of my vehicle. If manufacturers are aware that a major defect is out there, how many people have to have an accident or potentially cause a huge accident because a car made 2 years prior with the same part from the same manufacturer has the same dangerous problem? It’s ridiculous and I hope you look at this near fatal issue that has effected thousands of people, whose vehicles’ were made in 2017, 2016, 2015 and are not included in the recall.

I droved my 2016 cx-9 off highway and idled it at front of restaurant, suddenly the engine coolant overheat light came on, shut engine off and found leaking coolant on the ground near the rear of engine bay. Brought the car to Corpus Christi Mazda, found out leaks come from cylinder head crack, happens to cx-9 manufactured before June 20, 2020 according to Mazda TSB 01-013/21. I was quoted $3380 to replace the cylinder head out of pocket because the car is just out of powertrain warranty. I contacted Mazda headquarter for covering the cost out of goodwill since this is due to manufacture defects of cylinder head. Mazda refused to pay.

Cracked cylinder head due to manufacturing defect, left stranded at car wash with no engine coolant due to issue, took several months without a vehicle before it was replaced by Mazda. The vehicle has been repaired. I was left unable to drive in hot weather and could not use air conditioning while waiting for assistance. Dealer had seen the issue before, reported by many on online Mazda forums. There were no warning lamps prior to the incident happening.

Purchased the car used with 67k miles on it. Within 2 weeks of purchase warning lights went off saying that the engine was overheating due to censor malfunction. After three visits to mechanics (2 to the dealership and 1 to a private mechanic) it was determined that coolant was leaking into the engine causing the engine block to crack. This of course means that the engine will have to be replaced in order for it to be useable. That repair has been quoted by the dealership as a $14,000 repair. For a car that has less than 70k miles.

15 minutes after getting a wheel bearing replaced at the dealer, my engine coolant high temperature warning came on (never before seen). This occurred while I was on the interstate with no safe place to stop. When I was able to safely stop, I called the dealer. They said bring it back. I was unwilling to drive that far so chose the closest Mazda dealer. They informed me I have a cracked cylinder and the coolant is leaking into exhaust system. I was told the only option due to the mileage on the car (134,000) is to replace the engine for $8,000. This appears to be a known issue so I am shocked that it wasn't being checked for prior to the problem.

Mileage: 134,000

Cylinder head cracked, leaking coolant and causing engine overheated , potential fire hazard . Coolant also leaked and mixed in with oil cycling through engine , causing permanent damage to the engine , resulting engine to be fully replaced

Dealer diagnosed manufacturing defect that caused crack in head. {Which could lead to engine failure, and subsequent accident due to engine failure during operation.} Engine lost coolant. No overheating noted. No warning/error codes noted.

The contact owns a 2016 Mazda CX-9. The contact stated that while driving at an undisclosed speed, the air conditioning became warm and the fan was abnormally loud. Additionally, the engine temperature gauge was high. The contact pulled over and refilled the coolant reservoir. The vehicle was taken to an independent mechanic who initially diagnosed that the water pump was faulty and needed to be replaced. However, when the contact took the vehicle back to the independent mechanic for the water pump replacement, the mechanic diagnosed that the cylinder head was warped and referred her to the dealer. The vehicle was not repaired. The dealer was made aware of the failure and informed the contact that there was no recall associated with the VIN. The manufacturer was made aware of the failure and informed the contact that there was no recall associated with the VIN and referred the contact to file a complaint with the NHTSA. The failure mileage was approximately 120,000.

Mileage: 120,000

11/16/18 TOWED FOR INOPERABILTY. STUCK FUEL INJECTOR/ RUINED ENGINE. ALL PANEL LIGHTS CAME ON. KEPT CAR FOR 57 DAYS. FUEL INJECTOR # 1 FAILED. WE WERE DRIVING ONTO INTERSTATE. WHILE WORKING ON CAR, EXHAUST STUD BROKE OFF INTO TURBO CHARGER HOUSING. DRILLED OUT AND RETHREADED TOOK BACK TO MAZDA DEALER TO C/O ABOUT SWOOSHING NOISE IN R DASH SAID THEY DID NOT HEAR. THIS OCCURRING WITH ACCELERATION 2/7/19 WHILE DRIVING OUT OF STATE ON INTERSTATE , SWOOSHING NOISE R DASH LOST ACCELERATION WHILE PASSING. ST PETERS , MO DEALERSHIP HAD TO PUT BACK ON THE TURBO HOSE & CLAMP 5/6/19 BACK HOME AND AGAIN HEARD THE SWOOSH NOISE ON ACCELERATION. DEALERSHIP REPLACED GASKET TO TURBO CHARGER / AIR LEAK WITH SMOKE TEST 9/14/19 AGAIN BECAME INOPERATIVE WHILE DRIVING OUT OF STATE IMMEDIATELY AFTER PASSING LARGE TRUCK, LOST ACCELERATION WITH PEDAL TO CARPET. WAS TOLD IN LIMP MODE SMELLED SOMETHING IN CAR COMPARTMENT. STUCK ON NARROW COUNTY ROAD. LIMPED TO TURN OFF. ON INSPECTION BY TOW TRUCK PERSON, STATED WAS POURING GASOLINE FROM FRONT OF CAR. 'THIS COULD HAVE CAUGHT FIRE DUE TO 90+ DEGREE TEMP IN TEX. FUEL INJECTOR # 4 EXPLODED MECHANIC ON INSPECTION TOLD SERV MGR THIS CAR WAS PUT BACK TOGETHER IN A SHODDY MANNER. THE HOSE TO FUEL INJECTOR HAD PREVIOUSLY BEEN ROUTED WRONG WHEN ENGINE REPLACED. NOW WAITING ON MALFUNCTION OF FUEL INJECTOR 2&3. SCARED TO DRIVE CAR. C/O TO MAZDA CUSTOMER REP. HIS RESPONSE WELL U HAVE WARRANTY UNTIL 4/2024. THAT IS B/C WE TOOK EXTENDED WARRANTY. HOLLINGSWORTH MAZDA IN BATON ROUGE, LA CLOSED REASON UNKNOWN. *TR CONSUMER STATED ERROR TO VEHICLE SPEED INSTEAD OF 10-15 MPH.*JB

Mileage: 17,061

IN 2017, MY CAR SHUT OFF TWO TIMES, WITHOUT WARNING, ONE TIME AT A STOP LIGHT AND AGAIN ON THE HIGHWAY GOING 70MPH. WE WERE ACCELERATING AT THE STOP LIGHT WHEN IT SHUT OFF AND THEN DRIVING ON THE HIGHWAY. TOOK THE CAR TO THE DEALERSHIP AND 72 CODES CAME UP. THEY SAID IT WAS THE DVD PLAYERS (THAT THEY SOLD AND INSTALLED!!!) THAT WERE CAUSING THE ISSUE. THEY SUPPOSEDLY 'FIXED' THE ISSUE. NOW IN JULY 2019, THE CAR SHUT OFF AN ADDITIONAL FIVE TIMES. THREE TIMES WHILE DRIVING AND TWICE IN A PARKING LOT. WE WERE ON A HIGHWAY AGAIN WHEN THE CAR JUST SHUT OFF WITH NO WARNING, LIGHTS ON THE DASH STARTED FLASHING, AND THE POWER STEERING WENT OUT ONE OF THE TIMES. MY HUSBAND HAD TO PUT IT IN NEUTRAL, COAST TO THE SHOULDER, COME TO A COMPLETE STOP AND THEN ATTEMPT TO START IT EACH TIME. CARS WERE DODGING US EVERY TIME AND LUCKILY WE WEREN'T HURT. MY CHILDREN WERE IN THE VEHICLE EVERY SINGLE TIME. WE HAD THE CAR TOWED TO THE DEALERSHIP WHERE 68 CODES CAME UP. THIS TIME THEY'RE SAYING IT'S THE FUEL PUMP AND THAT THEY CAN 'FIX' IT, BUT CAN'T 100% GUARANTEE IT WON'T HAPPEN AGAIN. WE WERE PUT IN A LIFE THREATENING SITUATION EVERY TIME, WITHOUT WARNING, AFTER GIVING THE DEALERSHIP A CHANCE TO FIX IT. THE CAR IS UNDER THREE YEARS OLD AND ONLY HAS 30,400 MILES ON IT.

Mileage: 30,400

FAILS TO ACCELERATE AND CHANGE GEARS. THIS HAS BEEN HAPPENING SINCE WE PURCHASED THE VEHICLE. IT HAS BEEN BACK TO THE DEALERSHIP MULTIPLE TIME AND HAS NOT BEEN RESOLVED. THEY ARE UNABLE TO FIND ANYTHING WRONG. THE ENGINE IS A 2.5 L TURBO. THIS HAPPENS UNEXPECTEDLY WHILE DRIVING MAKING IT HARD TO GET ON TO THE HIGHWAY OR CHANGE LANES.

Mileage: 60,000

DRIVING TO WORK IN THE MORNING AT 5:45AM ON 06/05/2018 GOING 65 MPH AND MY CAR CUTS ENGINE POWER AND STARTS LOWLY DECLINING PRESSING GAS DID NOTHING AND MULTIPLE NOTIFICATIONS FLASHING SUCH AS VEHICLE SYSTEM MALFUNCTION, FORWARD SMART CITY BRAKE SUPPORT MALFUNCTION, SMART BRAKE SYSTEM MALFUNCTION. I HAD TO PULL OFF TO THE SIDE OF THE HIGHWAY I CAN'T EVEN SAY I CAN PULL OFF SAFELY BECAUSE ALL POWER WAS CUT. SO LET THE CAR SIT FOR 5 MINUTES WHILE OFF AND THEN RESTARTED AND WAS ABLE TO MAKE IT WORK. I TOOK PICTURES AS EVERYTHING WAS HAPPENING BECAUSE I KNOW THE DEALER SHIP WILL SAY SOMETHING LIKE "WELP IT AIN'T HAPPENING HERE SO YOUR CAR IS FINE." I AM VERY FORTUNATE WHEN I BOUGHT THE CAR I DECIDED TO LEASE THE VEHICLE SO I CAN JUST TAKE THE CAR BACK. THESE MALFUNCTIONS SEEM LIKE A VERY SEVERE PROBLEM AND I DO NOT WANT TO HANG ON TO THE VEHICLE. ONCE 30K PASSES I WILL BE SUPER SCREWED! I CALLED DEALER SHIP AND THEY ARE BOOKED OUT 2 WEEKS SO I CANT EVEN TAKE THE CAR IN RIGHT AWAY, PLUS THEY AREN'T EVEN SURE IF THEY'LL HAVE A RENTAL FOR ME WHEN I DROP IT OFF. ALSO TO MENTION, AC UNIT ALREADY HAD TO BE REPLACED, AND A SUSPENSION RECALL. WORSE CAR I'VE HAD SO FAR ITS SUCKS BECAUSE MAZDA USED TO BE SO GREAT. THEIR SERVICE DEPARTMENT SUCKS BIG TIME! I NEVER HAD THIS TYPE OF SERVICE OR ISSUES THIS SEVERE WITH MY CHEVY. 08/07/2018 I TOOK CARE IN AGAIN FOR SAME SITUATION ALONG WITH AC AND ALL MAZDA TELLS ME IS THEY ARE LOOKING INTO AND ASSURE ME IT WILL BE TAKEN CARE OF THIS TIME. (ALSO SAID LAST TIME) I THINK THAT THEY DO NOT KNOW HOW TO FIX THE ISSUE! I CALLED CORPORATE TO ASK FOR A REFUND AND GIVE THE CAR BACK AND ALL THE TOLD ME WAS TO GIVE DEALERSHIP ANOTHER CHANCE TO FIX THE ISSUE. IT IS SO UNSAFE TO DRIVE AND HAVE KIDS IN THE CAR, I AM VERY FORTUNATE TO NOT HAVE MY BABY NEPHEW AND NIECES WITH ME WHEN THESE THINGS WERE HAPPENING.

Mileage: 6,000

THIS INCIDENT HAPPENED ON 31ST JULY, WHEN MY WIFE WAS DRIVING THIS CAR ON HIGHWAY 4 MARTINEZ, CA AT AROUND 5.00 PM WITH OUR DAUGHTER (2 YEARS OLD) RETURNING FROM DAYCARE. SHE WAS DRIVING AT APPROX 60 MILE/HR, WHEN THE CAR STARTED GIVING AUDIO VISUAL WARNINGS ON MULTIPLE FAILURES AND THE CAR STARTED SLOWING DOWN WITHOUT RESPONDING TO THE GAS PEDAL AND ENGINE PROPULSION REDUCED TO 'ZERO'. MY WIFE PANICKED AND WAS LUCKILY ABLE TO PULL OVER ON THE CURB SIDE SAFELY, EVEN THOUGH TRAFFIC WAS VERY HIGH. SHE STOPPED THE CAR AND TURNED OFF THE ENGINE AND WAITED FOR 10 MINS AND RESTARTED THE CAR MULTIPLE TIMES AND MADE SURE THAT NO MORE WARNINGS ARE DISPLAYED, BEFORE DRIVING AGAIN, HOWEVER THE 'ENGINE WARNING LIGHT' STAYED ON. AFTER A WHILE SHE DROVE HOME ALMOST 40 MILES AWAY VERY CAREFULLY WITHOUT USING ANY CRUISE CONTROL. HERE ARE THE WARNINGS, THAT CAME ON DURING THIS FAILURE, PICTURES ATTACHED. ENGINE MALFUNCTION LIGHT. TIRE PRESSURE INDICATOR. STABILITY CONTROL INDICATOR. TEMPERATURE INDICTOR CRUISE CONTROL FAILURE WARNING MESSAGE 'FRONT RADAR SENSOR SYSTEM MALFUNCTION' WARNING MESSAGE 'FORWARD SMART CITY BREAK MALFUNCTION' AFTER A DAY WE DROPPED THE CAR TO MAZDA DEALERSHIP FOR INSPECTION AND THEY FOUND MULTIPLE FAILURE CODES AND THEY DID NECESSARY REPAIR (INSPECTION AND REPAIR INVOICE ATTACHED). EVEN BEFORE THIS INCIDENT , WE REPORTED MULTIPLE TIMES TO DEALERSHIP THAT THE CAR CENTRAL INFORMATION SYSTEM ABRUPTLY SHUTS DOWN DURING DRIVE. BUT THEY ALWAYS SAID THAT THERE WAS NO PROBLEM. THIS INCIDENT ON A FREEWAY WAS VERY SERIOUS, MY FAMILY OR OTHER DRIVERS COULD HAVE BEEN IN A INJURY ACCIDENT BECAUSE OF THIS ISSUE WITH MAZDA.

Mileage: 40,000

IMMEDIATELY UPON MAKING A SHARP RIGHT TURN INTO A PARKING SPOT, THE CAR SUDDENLY ACCELERATED AT A VERY FAST PACE WITHOUT ME PUSHING THE GAS PEDAL. MY IMMEDIATE REACTION WAS TO PRESS ON THE BRAKE, BUT IT DID NOT STOP. THE CAR SLAMMED INTO A PLANTER IN FRONT OF ME. THE CAR MOVED SO QUICKLY THAT IT WAS LODGED INTO THE BUSHES AND HAD TO BE PULLED OUT BY A TOW TRUCK. I IMMEDIATELY CALLED THE DEALER SERVICE DEPARTMENT AND TOLD THEM WHAT HAPPENED. THE SERVICE MANAGER'S IMMEDIATE REACTION WAS TO SCOFF AT THE IDEA THAT THE CAR ACCELERATED ON IT'S OWN. MY HUSBAND MET ME AT THE DEALER AND HAD SUBSEQUENTLY FOUND INFORMATION ABOUT A RECALL OF CX-9 MODELS FROM 2012 FOR A SIMILAR MALFUNCTION. HE SHOWED IT TO THE SAME MANAGER WHO IMMEDIATELY KNEW THE ISSUE OF THE RECALL BUT WAS QUICK TO MENTION IT WAS THE 2012 MODEL, NOT THE 2016. THE DEALER KEPT THE CAR FOR A FEW DAYS AND TOLD ME IT WAS DRIVEN TWICE AND ALSO SOME INFO FROM THE COMPUTER WAS REVIEWED WITH MAZDA TECH SUPPORT PERSON. NO DATA INDICATING ANY KIND OF MALFUNCTION IN THE CAR AND THE SERVICE GUY DID NOT HAVE A PROBLEM WITH IT IN TWO SHORT TEST DRIVES, SO THEY SAID COME PICK IT UP IT'S SAFE TO DRIVE. HOWEVER, I WILL NEVER DRIVE THIS CAR AGAIN. THIS IS THE FULLY-LOADED SIGNATURE CX-9 THAT THEY FEATURE IN ALL THEIR ADS. I LOVED THIS CAR AT FIRST SIGHT AND DROVE IT OVER 24000 MILES IN LESS THAN 2 YEARS. THIS EXPERIENCE SCARED ME TO THE POINT THAT I WILL NEVER DRIVE THIS OR ANOTHER MAZDA AGAIN. I HAVE HAD OVER A WEEK TO PROCESS THIS EXPERIENCE AND AM JUST HAPPY MY KIDS WEREN'T IN THE CAR OR THAT I DIDN'T HIT SOMEONE. I HAVE FOUND SEVERAL OTHER INSTANCES OF SUDDEN UNINTENDED ACCELERATION ONLINE AND CANNOT BELIEVE THAT THIS HAPPENS IN 2017. I HOPE THAT THIS DOCUMENTATION HELPS SOMEONE ELSE IN MY SHOES FEEL THAT THEY ARE NOT CRAZY AND THIS DOES HAPPEN. SHAME ON MAZDA FOR NOT FULLY ADDRESSING THIS ISSUE.

Mileage: 24,000