2018 Mazda Mazda6 owner complaints

Cracked cylinder head near the exhaust manifold. Created a large oil leak. Oil on the exhaust is a fire hazard. After one quart of oil loss a low oil level light comes on. This is a reported problem. One version of the engine I have has a Mazda TSB and an extended warranty. TSB 01-0022/23 A local repair shop has diagnosed the problem.

Cracked cylinder head causing oil leak and possible coolant leak. This is a known issue with this year and model. Mazda is trying to suggest the issue is only for the turbo engine, but the non-turbo engine is also defective, per countless reports online. I have a video from the service technician from the mazda dealership, but it is too big to upload.

Coolant leaking from head, informed by dealer the cylinder head is cracked and the entire engine needs to be replaced. The engine has just hit 80k miles at this point. This issue caused multiple instances of overheating while driving, one of which caused the vehicle to fail to move forward while on an elevated freeway overpass with no shoulder during rush hour. This issue appears to be widespread for 2016 and newer Mazda models with the 2.5L turbo engine.

Cracked Cylinder Head. At 50,400 miles. This is far too common of a problem for such a new car with so few miles. I have seen many similar reports online. My mechanic was baffled. This is a $5k cost AT LEAST. Mazda has a history of not covering these defects. And it IS a defect, not a simple wear and tear issue. A cracked cylinder head can eventually lead to engine failure, so it is dangerous to drive with it. The problem HAS been confirmed by an independent service center. I got a oil pressure warning sign.

The contact owns a 2018 Mazda 6. The contact stated that while merging onto a freeway the vehicle did not accelerate while pressing the accelerator pedal, lost automotive power. After turning the engine off and back on the vehicle operated as normal but later while driving approximately 65 MPH the failure had reoccurred while attempting the pass a semi-truck on the freeway. The check engine warning light had also illuminated and the vehicle was eventually towed to the local dealer who was unable to determine the cause of the failure. The vehicle was not yet repaired. The manufacturer was not yet contacted. The failure mileage was 67,000.

At less than 95,000 miles, the car suddenly started overheating. Coolant level was fine, maybe ever so slightly low (could still see the coolant in tubing and some in reservoir, which was closer to low than full). Replaced ECT sensor, thermostat and water pump which seemed to fix the issue. Drove for 9-10 days with no issues and it started overheating again. I was able to park quickly afterward at work (<10 seconds). Schedule for drop off at dealer (if car didn't show signs of overheating first (would have called tow truck). Checked fluid levels in car (was ~1Qt low) and topped it off. Drove to dealer (~30min ride) with no issues whatsoever. When dealer looked at it, they said cylinder was warped and leaking, requiring new engine. A just paid off car, with less than 100k miles on

I was driving my car, it overheated. I took it in and was told it needs a new engine. I was told it was not fault of my own why it overheated. It had 2 oil leaks and a blown head gasket.

Was driving then car suddenly shut down and all panel lights turned on. The car would not start after an hour it started but was Perkins when driving. Mechanics were unable to diagnose the issue.

Vehixle has open recall #3719f. Took vehicle in for service on july 15 and according to NHTSA recall has even out since june 27.2019. To this day I have not gotten any letter or anything stating car has open recall when the car can turn of randomly. Will be taking car in on 08/26/19 but I'm concerned as to why this has not been addressed in any letters or emails

The contact owns a 2018 Mazda Mazda6. The contact stated that he had experienced a transmission surged on five separate occasions since owning the vehicle. There were no warning lights illuminated. The contact had taken the vehicle to the dealer after each failure and various unknown repairs and software updates were performed on the vehicle. However, the failure persisted after each visit. The manufacturer was notified of the failure and a case was opened. The vehicle was not repaired. The failure mileage was approximately 10,000.

I took my car in for scheduled maintenance and the technicians at the Mazda dealer found out the tensioner and belt needed to be replaced, when the car is less than 36k in miles. Vehicles being repaired under warranty but a tensioner should not be going out this early in the lifespan of a 2 year old car. I have found a lot of people are complaining for the same issue. This can cause the cars to not run as there’s no notice ahead of time that the belt and tensioner are bad. I do have paper work stating tensioner problems. Vehicles should be recalled due to poor manufacturing and parts making it unsafe on the road.

When I put my car on reverse the sensors beep continuously and give the impression that there are obstacles behind your car. I cleaned all the sensors, but noise is still there. I see a lot of posts regarding same issue.

I was driving on a street and my check engine light, TCS/dsc light, sbs/scbs light, mrcc light, and warning light appeared on my dashboard. My car then started putting or jerky. It felt as my car was very weak as if it was going to give out. This is the third time these same malfunctions appeared. Each time it occurred I took my car to the Mazda dealership. The first time they did not find a problem because the warning light had already turned off. The second time(september 5), they gave me a new battery and new computer software. It is now at the dealership again. This situation is very scary and I need to know why this is happening

My car has stalled out on me 6 times in traffic and wouldn’t restart for hours. I took it to the Mazda dealership and they told me nothing was wrong but it continues to happen. I need something done as soon as possible

Was at a drive in window and car turned off and couldn't restart. Windows and lights would work but car wouldn't restart. Could of been driving and would of crashed. Had 3 people family in car. It was 9 pm had to have towed to nearest auto mechanic place 150.00. They are diagnosing and that is 186.00. This is a scary thing and going to BBB and filing a complaint I'm mad as he'll. Have had inspection done on this car 2 months ago and all required services to this car. This was without warning which is horrifying.

My mazda6 spontaneously caught on fire while it was parked on a street and completely burned down. The fault/problem cause is unknown at this time but I suspect there was wiring/electrical fault and manufacturing and design defect. Both the sheriff's department and fire department were involved in assisting me in this incident. I am still waiting for reports from law enforcement/first responders. Mazda has refused to address this situation without me providing them with an "inspection report supporting the claim a defect was present and said defect caused the fire." as I was only a lessee of the vehicle, I have no possession of the vehicle and, therefore, I cannot order an inspection on the vehicle. Mazda is acting in bad-faith.

Tl* the contact owns a 2018 Mazda 6. While the contact's friend was driving 55 MPH, he veered off the side of the road into a dirt patch, and struck an object. The air bags deployed and the driver's seat belt unbuckled upon impact. The air bag deployment burned the contact's right underarm. Medical attention was not received. A police report was not filed. The contact's friend was able to drive the vehicle back to his apartment. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and did not assist. The dealer was not contacted. The failure mileage was approximately 18,000. *dt consumer stated partial retract due to pretensioner firing. Cannot buckle ' 8 in too short. Both hands on steering wheel. Weird seat belt unlatched.*jb

After less than a year of leasing this vehicle, an abundance of rock chips have shown up, more than any other car I've leased. This paint seems extremely susceptible to foreign objects. (this would be the soul red color they use.) items that shouldn't cause a scratch do, and road debris causes chips that shouldn't far too much.

While merging onto the freeway on my way home from work, the sunroof exploded. I was driving straight on the freeway with light traffic at approximately 70 MPH. I did not see any debris or rocks and after stopping did not find any debris or signs of anything having hit the glass. There was just a loud noise like the sound of a shotgun blast and the majority of the center of the sunroof was gone. I reported the issue to Mazda and they said that it was due to "environmental factors" and was not covered by their warranty. They told me that the replacement glass would be $302 with approximately $450 in labor because they would have to remove the headliner and vacuum out any glass.