2019 Mazda CX-5

2019 Mazda CX5 has a cracked cylinder head. This is causing oil to leak out. The oil is leaking out onto the exhaust manifold which is causing the manifold to smoke and has the possibility to catch fire. Mazda is aware of this issue and issued CSP 11( customer service program). This does not cover the oil leak, only coolant leak. Several Class Action Lawsuits have been filed. Local Mazda dealership has inspected the car and confirmed the issue. The issue occurred suddenly with no warning. Again, Mazda is aware of this issue but has failed to issue a recall or service program to fix it, this is a dangerous issue as it can lead to a fire with the oil leaking onto the exhaust manifold.

My 2019 Mazda CX-5 started to smoke from the engine and I could smell oil burning. My car was due for an oil change so I brough it to a mechanic. After a diagnostic, they determined that there was a major oil leak and that the cylinder head was cracked and suggested I take it to the dealership. I did and they confirmed that there was a cracked cylinder head causing the massive oil leak. The technician even said in a video sent to me that the oil is leaking "in the same place as the others". I was then quoted $5,960.75 to make this repair. I did research and found that this is a manufacturing defect that is long known to Mazda. There is a TSB and a CPS that extends the warranty for this issue but only for turbo engines, not my non-turbo engine. My car is 2 years past the warranty but I only have 32K miles on it. I asked if Mazda could cover all or some of the cost since it is a defect, not caused by anything I did or didn't do. I was then told that because I didn't take my car there regularly for service, that they wouldn't cover it. I regularly took my car in for oil changes and other maintenance to a local shop as the nearest dealership was almost 30 miles away so it was very inconvenient. It's outrageous that Mazda won't issue a recall or extend the warranty for the same issue in the non-turbo engines. Asking me to pay $6K for a defect they caused is unconscionable.

My VIN indicates the 2.5L non-turbo SKYACTIV engine. Many 2019 CX-5 Touring models with this engine used cylinder deactivation, which is the version that has had some cylinder head cracking complaints. The engine type has documented failures my mileage (96k) is not extremely high for an engine The repair cost is very high ($5,500+) Mazda is refusing to help me out of goodwill assistance and ive only had the car for a year. They know this is a problem and fixed it for the turbos but not the non turbos! This is ridiculous, i expected a car to last more than 96k miles this can cause a fire or a stall and can cause a crash

I am reporting a premature engine failure on my 2019 Mazda CX-5 with approximately 55,000 miles. The vehicle developed a significant engine oil leak that was diagnosed by a repair facility as a casting failure in the cylinder head behind the timing cover. Due to the location of the leak and the nature of the defect, the entire cylinder head assembly had to be replaced. The total repair cost was $5,262.32, which I paid out of pocket. The repair documentation indicates that Mazda has issued a Technical Service Bulletin addressing this condition, but there is currently no recall or warranty extension covering the issue for my vehicle. A cylinder head casting failure at such low mileage appears premature and not consistent with normal wear and tear on a properly maintained engine. An engine oil leak of this nature could potentially create safety risks, including oil contamination of engine components or the possibility of oil leaking onto hot engine parts. Because this issue appears to be documented by Mazda through technical service guidance and has resulted in a costly major engine repair at relatively low mileage, I believe it should be investigated to determine whether a broader manufacturing defect exists that could affect other vehicles. I am submitting this complaint so that the issue is documented and can be evaluated for potential safety concerns or a future recall if similar failures are occurring in other vehicles.

The head on the 2.4L engine of the 2019 Mazda CX5 has shown a manufacturing defect that Mazda has addressed in certain models, but not all of the models with this engine. This leaves a large amount of vehicle owners with the financial liability to pay out of pocket for Mazda's engineering and manufacturing defect that they know about. The oil leaks onto the exhaust manifold creating a fire hazard. When driving our car, we cannot use outside air on the vents, A/C because the intake pulls in smoke coming from the engine compartment. I brought the car in today to Mazda and was denied any help in the repair, I am continuing with Mazda corporate to try and reach a resolution. Currently this will be roughly a $7000 repair. I do not have an estimate yet from the dealership.

The engine cylinder head cracked and is leaking engine oil. This component is available for inspection at Liberty Mazda or by an independent certified mechanic upon request. The cracked cylinder head caused significant engine oil leakage, which created the following safety risks: Sudden loss of engine power or stalling while driving Smoke emission from the engine bay Potential fire hazard if leaking oil contacted hot engine components These conditions placed both the driver, passengers, and others on the road at risk. The cracked cylinder head and associated oil leak were diagnosed and confirmed by Liberty Mazda, the authorized dealership that performed prior repairs on this vehicle. The dealership documented the issue and provided a repair estimate of approximately $5,400. No independent service center has inspected the vehicle at this time. The vehicle and cylinder head have only been inspected by Liberty Mazda. Mazda Corporate has not physically inspected the vehicle, but all service records and documentation of prior repairs have been submitted to them during the warranty dispute process. There has been no inspection by police, insurance representatives, or other third parties May 2025: The vehicle intermittently struggled to accelerate. At that time, no dashboard warning lamps illuminated, and the dealership initially reported no issues. June 2025: Following the timing cover repair, the vehicle experienced engine oil leakage due to incorrect sealant installation, which was documented. February 10, 2026: The dealership repaired the oil pan seal and replaced the sealant, refilling engine oil. February 14–15, 2026: Approximately four to five days after the February 10 service, the cylinder head cracked, causing a significant oil leak. All symptoms and related service events are documented in Liberty Mazda’s service records.

The vehicle's cylinder head has developed a structural crack at on the casting, a known manufacturing defect identified by the manufacturer in Service Advisory SA-037/23. This failure is causing pressurized engine oil to leak directly onto the hot exhaust manifold while the vehicle is in operation. The leaking oil is pooling on high-temperature exhaust components, creating a significant risk of fire while driving. The leak generates heavy smoke and noxious burning oil fumes that are entering the passenger cabin through the HVAC system, causing respiratory issues

The vehicle has suffered a crack of the Cylinder Head Assembly which leads to engine oil leaking onto hot exhaust and fire hazard. This defect is officially documented by the manufacturer in Service Alert SA-031/21, which identifies a trend of aluminum heads cracking and leaking pressurized oil directly onto the hot exhaust manifold. Although Mazda has issued a 10-year/120,000-mile warranty extension (Program CSP11) for the exact same casting failure in its Turbo-equipped models, it has refused to provide similar "Goodwill" relief for my vehicle, despite it suffering from the identical engineering flaw. Mazda’s refusal to cover a verified latent manufacturing defect that poses a significant fire hazard is arbitrary and unfair. I am requesting that Mazda North American Operations provide full reimbursement for the $6,788.51 repair

I am being told there is a crack in the cylinder head that is a known issue for these vehicles. I have done some research online and it says that they installed defective cylinders in vehicles that were made between the years 2018-2020 leaving vehicle owners to pay thousands of dollars out of pocket due to a manufacturing defect. My car was smoking and smelling like something burnt even inside the car causing the driver to inhale those fumes, I took it to the shop and it turns out that the cylinder head is cracked and leaking the oil.

Drove 39 miles, around ~55 minutes. Parked the car, realized that I parked a little too far from the spot, car just stalled while rolling. Pressed accelerator, nothing. Turned off the car, tried to start again, it cranked but didn't start. Had to tow it to the nearest mechanic (total of ~2 hrs until my car got picked up and dropped off), mechanic calls me and tells me my car started fine. I'm thinking it could be 5321K recall but not sure as my VIN is not in the recall nor did I get any recall notice. What component or system failed or malfunctioned, and is it available for inspection upon request? - No idea. How was your safety or the safety of others put at risk? - Got stranded for hours in the parking lot. Has the problem been reproduced or confirmed by a dealer or independent service center? - No Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? - No Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? - Yes, fuel cap like icon and check engine light were on when trying to start the car after it stalled. The car would crank but not start.