2018 MAZDA CX-5 Engine Problems

We are a senior citizen couple driving this 2018 Mazda. Went out to garage to find a significant size area of oil spillage on the floor. The car has just over 25,000 as we are low mileage drivers. Took to a mechanic to find out it is a cracked head and oil is steaming out of the crack.i have since learned that Mazda is well aware of the weakness in this model and has chosen not to do anything about it. Our car is out of warranty. It would be a hardship for us to repair. And if repaired, would it happen again? This has recall written all over it, as well as a class action suit. I would like our vehicle repaired at no cost to us. How long were they aware of this issue? I have found hundreds of complaints. I prefer not to pursue this legally but...

2018 CX-5 has a cracked or porous (depending who is telling me the issue) cylinder head at 60000 miles. I was told by the Mazda service advisor that the issue is common. I reached out to Mazda for assistance in covering their faulty part and was told they would not cover any of it.

The car would produce white smoke under the engine hood after getting to speed. It would smell like burnt oil. The shop found a crack in the 3rd cylinder. Will need to replace the cylinder head.

The engine cylinder head has a crack that has caused the engine oil to leak from the engine. This seems to be a common issue known by Mazda. The oil has saturated the right front brake and portions of the undercarriage, that will also need to be cleaned and or replaced. We had the car looked at a repair shop in Portland OR. they let us know this is a huge problem with this engine and we have not had this repaired as of this note. we will contact or dealer where we purchased the CX-5 and see about getting it replaced. This happened as my Wife was driving from California to our home in Washington. She noticed the oil light was flickering and she found a repair shop in Portland that looked at it and for that the head was cracked. Our car has 89,413 miles on it and...

The engine makes a tapping noise during the cold weather that will only go away after the engine has been fully warmed up. This a known issue for with a TSB sent out. However, the issue persist even after repair. The repair is extremely costly and can reach the thousands. This issue also causes worry there is no knowing if the problem will lead to issues further down.

Vehicle has a cracked cylinder head at 43,000 miles. It is leaking oil and will lead to further engine damage if not repaired. Dealer inspected and diagnosed the problem. There were no vehicle warnings. It was brought to dealer because it was leaking oil and smelled of burning oil. It appears to be a common problem with Mazda Cx5s.

One of the Cylinder heads has a crack in which has cause some oil to leak in the affected area. This is not the 2.5T engine, there is a TSB out for those engines. The affected engine is the 2.5 NA engine.

The contact owns a 2018 Mazda CX-5. The contact stated while driving downhill at an undisclosed speed, the oil warning light intermittently illuminated. The vehicle was taken to the dealer and diagnosed with a cylinder head leak. The dealer replaced the cylinder head and the gasket. The manufacturer was made aware of the failure. The failure mileage was approximately 82,000.

First warning was the oil light came on and I became aware of a leak. When I took it to the mechanic the next day, he described a porous spot on the side of the cylinder head that had opened up and was rapidly losing oil when the engine was running. I understand that this is not a unique problem to my vehicle but is common with this model year. I am concerned that the engine will run out of oil and malfunction causing loss of control at highway speed. The car is currently scheduled for confirmation of the problem with the local Mazda dealer.

Defective sealant used on timing cover, already leaking engine oil at 85000km… also confirmed as the same engine prone to cylinder head cracking from poor casting dimensions resulting in engine oil contacting the exhaust manifold and smoking. Possible fire hazard. Engine can seize up from low oil pressure at highway speeds and lock up the wheels causing an accident. Not sure why Mazda hasn’t issued a recall for this obvious safety concern… reminds me of Hyundai/Kia engine problems and now they’ve been sued and replacing thousands of engines for free.

Engine seems that it cracked. The car has 66K and has good maintenance record. I took my 2018 CX5 to Mazda for a possible oil leak. Mechanic says block has hairline crack, is leaking oil down exhaust manifold and engine needs to be replaced. It seems a known issue with this model & Mazda is aware of the problem. There is no recall or class action lawsuit that either of us found. Mazda has said this car in no longer under warranty. It has 66K and the engine is broken?

The issue started happening [XXX]. I was driving home and the car went into limp mode. Several errors came on the heads up display and on the dashboard. At first I could not go faster than 31mph, then it dropped down to 17mph, then to 7mph by the time I got home. 1.When accelerating from a stop light, car goes into limp mode and won’t accelerate almost stalling in the road. You must pull over, turn off the car and wait 5 minutes so error clears so you can drive again. 2.Car goes into Limp mode when going up a hill 3.Between 46-48 mph, car hesitates when accelerating 4.Between 56-60 mph, car hesitates when accelerating 5.Error Codes received per Lake Car Care: P2299, C1001, B1303 I brought the car to Lake Car Care and they replaced the spark plugs and coils as the codes said it was a misfire on...

Cylinder head was found to be cracked for a while on the vehicle. This was discovered at 117K miles but likely was cracked well before judging from the age of the oil in the engine bay. Car has been maintained well this shouldn't be happening at all this early into its life.

Burnt oil smell started being noticed in the cabin. Checked for leaks and none was found. Took the car to the dealer and it turns out the cylinder head is cracked. Dealer acknowledged this is an ongoing manufacturing issue. I contacted Mazda corporate to see if I qualify for after warranty assistance. No engine lights are on. Car has been maintained properly.

Cracked Cylinder Head. Oil leak and smoke near passenger side.

I bought this brand new in 2018 (Aug.) and I take care of this car very well. I was in the Korean Army, and I worked at the motor pool taking care of cars and trucks. Last year, I noticed my oil level decreasing that I kept refilling. I just thought it was burning some oil. Last week, I was losing lots of oil with some smoke (oil burning). I took the car to a local shop and they said "the cylinder head appears to be leaking oil from the back drivers side of the head".

I noticed a burning smell while driving. Smoke started coming through the air vents and made me light-headed. I asked my son to take a look, and he said that oil was dripping onto the exhaust and smoking, and it could have caught on fire. There were no warning lamps or any other indicators besides the smell and smoke. I could have passed out from inhaling the smoke and died, or my car could have caught on fire. I took my car to the Mazda dealer. They confirmed that my car was affected by the well-known 2018-2021 CX-5 cylinder head crack. They quoted me $4848 to fix it. When I asked if they could help me with the price, they offered me 10% off. I told them that’s unacceptable. After much back and forth with the dealer and Mazda Corporate, they dropped the total to $1470.60.

The car (2018 Mazda CX-5) exhibited a strong burning smell coming from either the engine or exhaust which you could smell in the cabin. No warning lamps turned on in the dash indicating any problem. Problem was recreated by Mazda dealership service center and diagnosis is that cylinder head is cracked and is leaking oil into the exhaust manifold. Suggested repair was a replacement of the cylinder head. Was told this is out of the 5 year/60K warranty. Had car for 5 year 11 months and only driven 45K miles. Car has not been inspected by anyone other than Empire Mazda of Huntington.

Oil smell in cabin. Diagnosed by independent repair shop as hairline crack in back of cylinder head. Cylinder head replaced at 91000 miles.

2018 mazda started smoking from under hood and noticed a burning oil smell. Took to mechanic and was told engine head gasket has a huge Crack. Car only has 22k on it and never been in any accident. All appropriate preventative services are up to date. There was no indication light no warning light nothing to identify why the car was leaking oil and smoking until it was looked at. This has multiple.complaints in regards to this specific year and model and needs to be addresses before someone's car catches fire or stalls in the middle of highway

Constant ticking sound coming from engine, most apparent while idling but continues even after oil change and engine warm up. Goes away for short periods of time. Always comes back and is very loud. Sometimes engine block shakes and can be felt through the steering wheel.

This car that I financed on [XXX] 2024 has been back to the dealership over 6 times. My car loses power on the freeway and all main roads. I push the gas pedal and nothing happens so I am forced to pull over and turn the car off and restart it again. It's very dangerous when I'm merging on the freeway and I cannot accelerate and have to pull over in traffic. Sports cars International in Lynnwood Washington is well aware of the issues I've been having and they have not fixed them. They have allowed me to drive off the lot knowing I am in a car that is dangerous and unsafe, a car that could kill another family or myself. They are unresponsive to call of my phone calls and emails. This car has had nothing but problems since then day I drove it of the lot. Come...

To Whom It May Concern, I am writing to report a serious issue with the 2018 Mazda CX-5, specifically regarding the structural integrity of the cylinder head. This defect leads to significant oil leakage, toxic smoke entering the vehicle, and substantial repair costs for owners. Despite these problems, it appears Mazda has not initiated a recall, despite being aware of the issue. My wife owns a 2018 Mazda CX-5 with approximately 80,000-90,000 miles. Recently, after she returned home from work, we noticed gray, billowing smoke emanating from the hood. The smell of burning oil and rubber permeated our garage and home, making it difficult to breathe. We took the car to an independent technician at AAMCO, who, after a thorough evaluation, concluded that the cylinder head was cracked. Given the car's mileage and overall condition, they were extremely surprised and double-checked all other possibilities before reaching this conclusion. They informed...

The cylinder head cracked and broke resulting in a massive oil leak that covered all the parts under my car and under the hood and engine which in result started to smoke. This is not only a major issue of extremely costly repairs but more importantly also serves as a major safety issue. This could had caused fire to the vehicle and also engine misfire resulting in engine failure while in drive and potentially lead to critical injury or death for me and my family. Mazda was aware of their poorly designed engineering for this critical and extremely important component and it is known Mazda recognized the issue by issuing a TSB. After further research there are numerous TSB issued for multiple engine failures with Mazda. It is also known that certain VIN number vehicles manufactured with this defect are commonly reported and have experienced this exact same issue within...

The contact owns a 2018 Mazda CX-5. The contact stated that while her son was driving at approximately 45 MPH, the check engine warning light was illuminated. The contact also stated that the vehicle lost motive power and stalled. The vehicle was able to be restarted. The vehicle was taken to an independent mechanic where it was diagnosed that the fuel pump and fuel rail needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was 75,896.

Despite a recall on the fuel pump, there continues to be a problem but instead of the “back” fuel pump that was fixed, the “front” fuel pump seems to be having the same issue. When taken to the dealer, the code P0087- fuel rail/system pressure too low shows up. This is causing car to stall, unable to pick up speed or simply pick up too much speed when attempting to accelerate. It’s a safety hazard for a car less than 6 years old.

Noticed an oil smell when driving the vehicle, slightly premature to when it was due for an oil change. Engine was emitting light blue smoke when parked after driving for more than 20 minutes. Took the car to a Mazda dealership to get serviced two days after noticing the issue and was told that the cylinder head was cracked and needed to be replaced. There was oil leaking from the vehicle, which I had not noticed, and it had soaked a lot of the front undercarriage of the car. Research into the effects of an oil leak indicate that it can cause a serious malfunction of the engine and other components of the car, but I did not experience that in the time of noticing the problem and taking the vehicle to get serviced. The problem was diagnosed by the service department at a Mazda dealership and is being repaired...

Noticed a burning oil smell coming from the car along with leaking oil in the driveway. Vehicle has 53000 miles on it and was 3 months out of powertrain warranty but still under the 60000 mileage cap. Local Mazda dealership came back saying that it was a "SA-037/23 Oil leak at cylinder head, cylinder head replacement with parts kit" and quoted $5100 to repair. Dealership stated that the vehicle was unsafe to operate. There were no dash indicator lights or symptoms of overheating to indicate that there was a problem outside of the smell. After the diagnosis was made, we researched and found that this was a commonly reported problem for this model year

The cylinder head and timing cover are leaking oil and need to be replaced. It is at the dealer and available for inspection. The car started smoking and lost oil obscuring my vision. The problem appears to be well known by the dealer and they were able to diagnose the issue. The vehicle has only been inspected by the dealer where I purchased it. There were no warning lamps, messages or other symptoms. This vehicle has had regular maintenance per the manufacturers specifications since it was purchased new.

Oil started to leak along with a burning smell, ended up being a cracked cylinder head at 77k miles. It was not in an accident & it did not overheat. But it appears this is a known issue with this make, model & year. Now Mazda only wants to pay $1k of $5k charge. I bought the dealers extended warranty, up to 75k miles, which apparently means nothing. My next car will not be Mazda.

Cracked cylinder head at 75000 miles causing oil to leak, Mazda dealership called it a fire risk

Head cracked at just under 49,000. Oil dripping on exhaust entering cabin continuously. This issue was identified by Mazda to dealers in 2021 via Mazda TSB SA-031/21. Despite having our vehicle serviced multiple times at the Puyallup Mazda dealership after that date, no mention was made of this noted defect. We drove for about a month inhaling the petroleum fumes often thinking it was from trucks ahead of us on road. Dealership replaced the head assembly but since car was 4 months out of warranty (we are the original owners having purchased it new from this dealership) the dealership insisted on charging us for repairs. We've been breathing fumes from a known issue and others may be as well due to faulty manufacturing the manufacturer and dealer refuse to take full responsibility for.what is clearly a defect.

2018 Mazda CX-5 with roughly 52,000 miles on it was emitting a burnt rubber smell and white smoke from the engine. Repair shop thought it was a bad timing lock. Replaced that and car continued to emit white smoke and smell like burnt rubber. Engine then began leaking oil. Took the car back to the repair shop and it was confirmed that the engine had a cracked cylinder head. The repair shop said this is a known issue with 2018-2019 Mazdas. In three days time, the engine leaked roughly 1 quart of oil and was deemed not safe to drive by the repair shop.

My 2018 Mazda CX-5 had a rubber burning smell and smoke leaked into the cabin. I noticed the next morning, oil leaked onto my driveway. I brought the car to the dealership and they mentioned it was a cracked cylinder head. My car has approximately 49,200 miles on it and it about 5.5 years old. It is under the mileage limit for powertrain warranty but slightly over on the age limit for powertrain warranty. Mazda informed me that they would cover roughly 37% of the repair costs that the dealership quoted me. I've read online on various Mazda forums that many owners are dealing with the same issue and Mazda admitted that a batch of heads have a manufacturing defect. Owners on this forum mentioned Mazda covered 100% of the repair costs for cars that were out of warranty due to this being a known manufacturing issue. I think the...

There a oil leak either engine cylinder crack or head gasket leak and the car only has 53000 miles when warranty just expires. After searching on the internet, there seems to be many similar cases. Mazda should recall this issue.

There was a TSB #[xxx] for the repair of Cracked Cylinder Head(s). Our 2018 CX-5 incurred a Cracked Cylinder Head at 5,418 miles. This was under the 60,000-mile power train warranty, but after the 5-year term had expired ([XXX]). Our issue started in late January '24. The car had been serviced at the Mazda Dealership in Hyannis, MA until my wife bought a '21 CX-5 model and gave the '18 model to our college son in FL. The TSB was for '18 - '20 models - which has now been increased to the '23 CX-5s. Mazda US would not help us in any way with the engine replacement that the Mazda dealership in Tampa replaced with a '23, 4,000-mile engine. $ 7,462.89 'new' engine that has a '23 engine that could incur the same issue! Also, my wife's newer model, '21, could also be a lemon for the TSB. We're...

We own a 2018 Mazda CX-5 which developed a cracked cylinder head after slightly over 53,000 miles. We had oil leaking in our driveway and our dealership advised us not to drive it as this would be an extreme safety issue. I was advised to contact you as this seems to be an ongoing issue with Mazda CX-5's from 2018-2021. There is a safety bulletin TSB #SA-031-21. I am hoping this will help with resolving this with Mazda costumer service.

ENGINE HEAD HAS CRACK ON IT, CAUSING OIL TO LEAK OUT AND BURN AND SMOKE. IN ORDER TO REPLACE THE ENGINE/CRACK, MANIFOLD NEED TO BE REMOVED. LEAKAGE IS IN THE BACK OF THE ENGINE. THIS MUST BE MANUFACTURED DEFECT. MY MAZDA HAS LESS THAN 45000 MILE ON IT. UNFORTUNATELY WARRANTLY IS NO LONGER VALID. UNLESS A RECALLED IS ISSUE, A REPAIR WILL BE FREE OF CHARGE TO CURRENT OWNER. OTHER WISE OPERATOR HAS TO CONSTANTLY KEEP ADDING OIL.

Hydraulic lift adjuster failure causing loud engine knocking. Vehicle cannot be driven and costs thousands of dollars in repairs. The engine is only at 42,000 miles.

Cracked cylinder head oil drips onto exhaust manifold smoke gets into cabin and could cause fire on exhaust manifold car was purchased used 5/22 and with 46732 miles and now has 74000 in 2/24 it is now at central Maine Chrysler jeep where we purchased it having repairs done under extend warrantee that we bought with the car.we spoke with the service department at a mazda dealer and they said it is very common i feel that mazda should recall it passengers should not have to breath oil fumes or risk being in a car fire we are lucky to have purchased the warrantee but without it the repairs would be to cost prohibitive for the average person thanks

Transmission is continuously jerking at lower and higher speeds While driving in traffic or in parking lot areas

vehicle stalls with three warnings showing at high speeds (over 55 mph) Errors dashboard: 1. Smart brake system malfunction 2. Forward smart brake system malfunction 3. Front radar sensor system malfunction

Vehicle engine has stalled multiple times at low speeds. Vehicle will not restart immediately. In order to get vehicle to restart, gas must be revved while pressing start button to get engine to restart. It appears as if fuel is not being delivered to engine. Electrical components remain functional. Vehicle was inspected by dealer and issue could not be recreated. No issues were found. No warning lights displayed or codes found upon inspection. No symptoms of problem; occurrence is sporadic. It has caused traffic and safety hazards due to stalling in roadways.

-cylinder head cracked resulting in leaking and burning oil from rear of cylinder head by exhaust manifold. Car has since been repaired by Mazda, but pictures are available from the incident. -Car was unsafe to drive due to leaking oil all over road (Environmental risks and hazard to others), black smoke and burning smell circulated into cabin via AC (health risks to passengers). Prolonged driving in this condition would have resulted in loss of oil and further damage to the car and others. -Car was towed to independent service center then subsequently towed to Mazda dealership -Mazda dealership inspected and confirmed that it was a manufactured defect that they have seen with other cars. Mazda has a Technical Service Bulletin (TSB) issued as well. -No warning lamps appeared prior to observed smoke and leak, though it was noticed that the car did jerk slightly at times when stopped at a...

Cylinder crack. Recently got a oil change and driving to work couple days after and smelled oil burning into my cab and smoke coming from underneath my hood. Got to work and opened my hood and noticed large amount of oil on belly and leaking oil from my cylinder. I got this vehicle thru a dealership and when contacted, they stated if I pay $7,500 I could get a trade in!!! After numerous searching, I've found a lot of owners with the 2018 Mazda CX-5 are having the same issue with cylinder heads and no corrective actions. Now I have to pay Mazda (after their defective parts) for their mistakes

This vehicle has stalled out while driving at least 4-5 times since purchasing it in 2018, although issues started about 2020 or 2021. It usually starts with the radio console either malfunctioning or going dead completely while I’m driving and several minutes later (usually after stopping at a red light but sometimes while actively driving) the car stalls out in the middle of traffic. It starts up after few minutes but it’s a very dangerous situation. It also sometimes hesitates when putting my foot on the gas, as if there’s a fuel injection problem. I already got all the recalls fixed but there’s obviously other significant problems with this vehicle. If it causes me to get injured I will be taking legal action.

Crack Cylinder Head less than 50,000 miles

The contact owns a 2018 Mazda CX-5. The contact stated that the vehicle was taken to the dealer for a scheduled service appointment. During the inspection, the contact was informed that the vehicle had a cracked cylinder and the cylinder head needed to be replaced. The vehicle was not repaired. The contact was informed that the repair would not be covered under the warranty due to the warranty being expired. The manufacturer was made aware of the failure. The failure mileage was approximately 84,000.

Defective cylinder head resulting in oil leak. Confirmed and inspected by dealer. No warning messages or symptoms. Just smell of burning oil.

I just had my vehicle in for routine maintenance and oil change and three days later it started leaking oil, staining my driveway, with the leak getting progressively worse then my check oil light went on, and the day I brought it in, and it was smoking under the hood. My safety and the safety of others on the road was at risk. At the routine maintenance visit they found no issues with the vehicle. After bringing it into the dealership they diagnosed it as a cylinder head crack needing replacement. We had another dealership look at the diagnostic video and explain that this is poor manufacturing. It’s just over 60,000 miles but is still within our warranty from a timeline aspect. Upon research we found this is happening to many people with a Mazda’s from year, 18 to 21. There are many forums about this. Upon an online search...