This is more of a general notice to fellow Mazda CX-5 drivers with the issue described below: Our car is a 2018 CX-5 with 25K miles. The check engine light came on upon entering the highway at the beginning of the day. Subsequently, stopping by an AutoZone to diagnose it revealed a malfunctioning thermostat. Only then did I realize the car took a long time to reach the operating temperature (for the blue indicator light to go away), and engine temperature would generally stay around 165 and hit 210 only after a very long time of driving, while idling or in traffic. However, our internal heater performance never had any issues while being kept at 75 and blowing mild to moderately. Upon taking the car to our Mazda dealership and requesting a diagnostic service, did we learn it was a malfunctioning coolant control valve that there is a technical service bulletin (# 01-011/21) for such a thing, and covered under our CPO powertrain warranty for replacement.

- Jamaica, NY, USA

Engine light came on, pulled over to the side to open the hood. Engine was smoking and oil was leaking all over the floor. Checked the oil dipsitick, still had oil but could smell the burnt oil. Towed the truck to the dealers and said its Engine head cylinder is cracked.

- San Antonio, TX, USA

The vehicle stall at very low speed in a parking lot could not restart it was turning over the battery was fine came back 3 hours later and was able to start

- Miami, FL, USA

Engine turned off while making a k turn. This is the same issue I experienced in 2019. Mazda issued a recall for software malfunction shortly thereafter and my car was serviced as part of this recall (NHTSA campaign number: 19V497). But now the exact issue happened again last week.

- Glen Rock, NJ, USA

Will not accelerate at times no matter how far you press down on gas pedal and will stall right after. I will pull over shut off vehicle and restart. This sometimes corrects the problem right away. Other times it lasts longer. System malfunction light randomly comes on.

- Wakefield , MA, USA

Approximately 9:15am 5/16/21 I was driving on the road when my engine stalled and went out. Was stuck in the middle of the road for a couple of minutes while I tried to restart the car. My vehicle was recalled for this very purpose but 13 days prior I went into the dealership to fix the issue and get a software update. After said update I experienced the recall issue on my vehicle.

- Plano , TX, USA

Situation: Driving uphill on hwy 120 on new priest road, big oak flat, ca, two lane mountain road. Slow car in front of me and a delivery truck tailgating. Slow car eventually moves aside in a turnout and I accelerate to open up space between myself and what I thought would be the truck but somehow the slow car returned to the driving lane ahead of the truck. I continue to accelerate to attempt to open up space between myself and the car behind me when I lost power, the car behind me moves to the opposing traffic lane to avoid rear ending my car that is running in degraded mode (accelerator has no effect, basically moving on idle power) and narrowly misses an oncoming car as I move towards the right edge of the right lane. Truck behind me has to brake hard to avoid rear ending me. There was no shoulder to pull over to at that location immediate location. I pull over a few hundred yards further at a safe location. Grade was perhaps 4% to 6%. weather: Hot 90 degrees speed: Accelerating from 35 to 50 mph (guess) diagnostic lights: Smart city braking system failure warning, plus a lot of other warning lights lit including check engine light. Aftermath: I pulled safely over, stopped the engine, waited a while and restarted the engine and the car returned to it's normal driving behavior and completed my trip. Other information: This is the 3rd occurrence of this behavior. Each time I have had Mazda look at the problem. 1st occurrence they replaced the cylinder coil, 2nd occurrence they replaced a spark plug for misfire. 3rd occurrence, to be determined.

- Fremont, CA, USA

When taking vehicle in for recommended 45K mile service, dealer discovered warped head cylinder and leaking oil. No check engine light warning ever came on! no warning. Mazda is replacing engine parts under vehicle warranty

- Madison, NJ, USA

I purchased this VIN less than 24 hours ago, I was told it was certified by the dealership. In looking up the VIN on www.NHTSA.gov this am, it says the recall #3719F was not fixed; the dealership just sent me a screen shot from Mazda North America operations warranty vehicle inquiry report, and it shows the repair done. Who do I believe? the vehicle is at my home on the drive way, stationary. I'm asking the dealership to pick the car up, and refund my $100 dollars. They want $400 more when I get paid 2/25.

- Daytona Beach, FL, USA

I was driving on the highway and it was raining. I lost control of the vehicle, the steering wheel was spinning uncontrollably. I was advised I most likely hydroplaned. The vehicle finally slowed down and backed into a guardrail. Only the rim of the driver side back tire was damaged. The impact felt like the impact felt when hitting a curb too hard. This did not happen on the side of the road with a shoulder, so after the tire hit the guardrail, I moved to the car to the other side of the road to be on the shoulder. Once I arrived at the other side of the road, the airbags deployed and the brake assist light came on and the police were automatically called. The car was towed and the collision shop cannot explain why the airbags deployed. I'm terrified that the airbags can deploy at any time for any reason. I am also terrified that they will not deploy when they are supposed to since they deployed at least 10-15 seconds after the impact with the guardrail occurred.

- Rochester, NY, USA

The contact owns a 2018 Mazda Cx-5. the contact stated while driving at low speeds, the vehicle stalled and was restarted. While the push-to-start was engaged, the vehicle revved up high, stalled, and restarted. Additionally, the air conditioner failed to operate as designed. The radio was also inoperable. The check engine warning light was illuminated. The vehicle was taken to gunther Mazda (1800 S state rd 7, fort lauderdale, fl 33317, (954) 420-6565) where it was diagnosed that the battery, A/C motor and an unknown controller needed to be replaced. The vehicle was repaired several times however, the failure recurred. The manufacturer was contacted however, no further assistance was provided. The failure mileage was 2,000.

- Plantation, FL, USA

2018 Mazda Cx-5 grand touring. Alternator/ac serpentine belt tensioner leaks oil (its hydraulic) and if fails could cause belt to come off without warning and leave you stranded. Dealership indicates this is not warranted.

- Sanford, FL, USA

On May 9, 2020, our Mazda CX5 lost thrust, stalled and came to a complete stop while driving on a highway going 55 mph on a straight 3 lane road. This occurred despite the PCM programming was re-calibrated due to a manufacturer recall in September 2019 (NHTSA recall no. 19V497000). The car is towed to a Mazda service centre and is awaiting diagnosis.

- Vancouver, WA, USA

The engine in my Mazda Cx-5 was required to be replaced recently due to a known issue in the car that causes the rear head to leak. My car has less than 12,000 miles on it so the engine should not have this issue. My dealer explained to me this is a known issue by Mazda and he had seen 5-10 other cars just at his dealer. We noticed this issue when my son was driving the car and we saw fluid pouring out of the bottom. We had him stop the car immediately and not drive. I tried numerous times to get Mazda to engage to provide a better warranty given it is a new car should not have a blown engine with only 12,000 miles and it is a known issue but they refused to provide any support. I asked about why no recall and they just stated there is no recall for this issue, although the dealer highlighted Mazda is aware of a flaw in the car that caused the rear head to leak. I would like to seek some action with Mazda to make them deal with this very concerning issue

- Fairfield, CT, USA

Mazda Cx-5. consumer writes in regards to vehicle being totaled as a result of loss of engine power.

- Branchburg, NJ, USA

The contact owns a 2018 Mazda Cx-5. while driving 20 mph and below, the vehicle failed to accelerate. The contact had to depress the accelerator pedal with force to increase the speed. The contact took the vehicle to findlay Mazda (7760 eastgate road, henderson, nv 89011, (702) 955-5555) to be repaired per NHTSA campaign number: 19V497000 (engine, power train); however, the repair did not correct the failure. The contact took the vehicle back to the dealer, but they were unable to locate any failure codes. The manufacturer was contacted and provided case number: 1-2318934006. The vehicle was not repaired. The failure mileage was 24,800.

- Boulder City, NV, USA

The contact owns a 2018 Mazda Cx-5. when the engine was warmed up and the vehicle was placed in park, the accelerator pedal automatically dropped to the floorboard. The failure caused the vehicle to drive forward and the driver to lose control of the vehicle. The vehicle was taken to roger beasley Mazda georgetown (7551 ih 35 South, georgetown, tx 78626, 512-591-9313) to be diagnosed, but the failure could not be duplicated. The manufacturer was not contacted. The failure mileage was 7,226.

- Austin, TX, USA

Vehicle went into limp mode while passing on two lane road. Cause was determined to be wrong logic in PCM for cylinder deactivation. This worng logic caused low oil pressure in the lifter during deactivation which in turn caused the rocker arm to become dislodged rendering the associated valve inoperable. There is no indication to the driver of if or when this happens. The driver is then driving the car in a very dangerous state. The problem arises when the the rpms become elevated to around 5000 rpms and above. At this point the computer senses trouble with that cylinder due to the air fuel ratio not being correct and throws the engine into limp mode. Creating a very dangerous situation if you are trying to pass or avoid something where you need the accleration. Extremely dangerous!! when I took my vehicle into my dealership they discovered the misfire on cylinder #4 and Mazda had them remove the valve cover and inspect. Upon inspection they found a rocker arm had fallen off. According to Mazda my car was the 19th that they had seen with this problem. My car was in the shop in Oct. Of 2018. By the time my car was out of the shop that number had increased to 26. Mazda said the source of the problem was the wrong PCM programing. They stated they have 2 suppliers of pcms and one of their suppliers was using the wrong program. To fix my car they replaced the engine and reflashed the PCM to the correct program. I asked the dealership if they were going to reflash all of the vehicles on their lot that have this engine and they said they did not have permission from Mazda to do this. I feel they should have done that because Mazda admittedly does not know which cars have the wrong program and a simple reflash of all new vehicls would fix this situation. The number of these bad vehicles is increasng and many peple could be in danger. Mazda should recall asap

- Hermiston, OR, USA

2018 Mazda Cx-5 when I check the oil it is extremely over full and strong odor of gas when the dipstick is pulled out to be wiped off. It is like 4 inches above the max mark/ oil is very thin. This is an excessive amounts of gas in there.I warm up my car before leaving and drive it regularly everyday. This is very bad I read that gas is not a lubricant and washes the oil out of where it needs to be lubricating engine. It continues to happen. Checked manual to make sure I am checking it correctly. Says to get to operating temp. Wait 5 min to let oil settle back into engine then check it. I contact Mazda corps again, they have me take car to vallejo to inspect it with their regional technical specialist, then leave it there for repairs. During this inspection we discover oil leaking from the rear main seal. Their specialist confirms where it is leaking. I leave my car 5 days. Then they call me to pick it up to take it to hansel Mazda in santa rosa. Before I drop it off for repairs I have the oil changed at hansel Mazda. Then a few days later I check the oil, again it is extremely over full with strong odor of gas. I take it to hansel Mazda to have it checked to confirm that this is happening and make app to have the oil leak that was confirmed by Mazda's specialist and this problem of gas getting into the oil fixed. I check oil before dropping it off at hansel, it is way over full and very thin. Drop it off, they keep it for 5 day too then say there is no oil leak and nothing wrong with my car. They said they did anything to my car except inspect it. It is running different. I check oil next day it is very thick and very low at the minimum mark on dipstick. The oil has never read this low on the dipstick hansel Mazda must have taken a lot of oil out to counter for all the excessive amounts of gas getting there and added something to try to seal the leak. They lie

- Sebastopol, CA, USA

1509 miles on my new Mazda cx 5 purchased at marin Mazda in san rafael ca. On May 22, 2018 this vehicle keeps having some kind of what feels like a wheel resistance issue. Not sure if it is something happening in the drive train or transmission. Also not sure if it has anything to do with the way the vehicle starts everyday - this car over revs itself when started first thing ticking very loudly, rattling, pinging all kinds of different noises. It is ticking so loudly because it is over revving itself and there is no oil throughout the engine yet. Even after it stops over revving after a few minutes the car continues to have excessive engine noise the service advisor at marin Mazda insists that this is normal for Mazda's to sound like this & is ok. I don't believe him. This kind of start up everyday is going to cause problems in this engine quickly and premature failure of this cars engine. Mazda dealers are concealing some defect that is causing this car to start like this. This is something that should have been disclosed to the customers before they sell this car. Because it did not sound like this when I test drove it. That is because they take you inside while the car is warmed up so you can't hear it. That is concealing this major issue from the consumer. This is Mazda's standards of doing business. Concealing known defects of their vehicles then when a customer brings the vehicle in for repair they tell them it is operating as it was intended to by the manufacture. If this is correct then these things should have been printed on the window sticker on the car not concealed and not mentioned to the customers. This is very deceptive for Mazda, it's dealers and representatives to hide and lie about the merchantability condition of this vehicle. Because nobody wants to buy a brand new car that sounds like a rattle trap ghetto sled when it is started everyday.

- Sebastopol, CA, USA