IllustrationCracked Head , not caused by anything I did.
2018 Mazda MAZDA6
Owner reports · Recalls · Investigations
Similar to other model years
Owner complaints for the 2018 Mazda MAZDA6 do not stand out strongly from the model-year median of 105.
About this comparison →How this year compares
Owner complaints by model year
Compare all MAZDA6 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 15 of 58 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Engine. Review the 32 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Power Train. Review the 9 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
1 crash reports1 fire reports1 injury reports
What owners actually said
58 reportsWas 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 g…
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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.
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.
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 w…
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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.
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.
Due to design issues, the engine cylinder head became cracked after normal everyday usage. Coolant began to leak badly and car engine became hot while driving.
Just noticed my coolant was leaking underneath my car and i went to mazda to check and it came out being a cracked cylinder the car are driven by my daughter from school to work only and has 68k miles, mazda doesn’t want to fix because supposedly the engine warranty only last until 60k
Mazda is producing and installing bad belt tensioner sand bad belts for new cars belt tensioner only lasts about 27,500 miles and belt only lasts 11 month/14,000 miles belt tensioner is a major safety issue
Timing chain cover leak
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 …
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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.
Official recalls
221V875000 · Fuel System, Gasoline:delivery:fuel Pump
Nov 12, 2021
Mazda North American Operations (Mazda) is recalling certain 2018 Mazda3, Mazda6, 2019 CX-3, 2018-2019 MX-5, CX-5, CX-9, and 2019-2020 Mazda2 vehicles. The impeller inside the low-pressure fuel pump may crack and deform, potentially causing the fuel pump to fail.
Consequence & remedy
Consequence: Fuel pump failure may cause an engine stall, increasing the risk of a crash.
Remedy: Dealers will replace the fuel pumps, free of charge. Owner notification letters were mailed July 18, 2022. Owners may contact Mazda customer service at 1-800-222-5500 Option 4. Mazda's number for this recall is 5321K.
19V497000 · Engine; Power Train:automatic Transmission:control Module (tcm/pcm/tecm)
Jun 27, 2019
Mazda North American Operations (Mazda) is recalling certain 2018-2019 CX-5, Mazda6, and 2019 Mazda3 vehicles. A software error in the powertrain control module (PCM) may cause the engine to stall.
Consequence & remedy
Consequence: An unexpected stall increases the risk of a crash.
Remedy: Mazda will notify owners, and dealers will reprogram the PCM software, free of charge. The recall began August 20, 2019. Owners may contact Mazda customer service at 1-800-222-5500, option 4. Mazda's number for this recall is 3719F.
Additional source detail variants (2)
Power Train:automatic Transmission:control Module (tcm/pcm/tecm)
Mazda North American Operations (Mazda) is recalling certain 2018-2019 CX-5, Mazda6, and 2019 Mazda3 vehicles. A software error in the powertrain control module (PCM) may cause the engine to stall.
Consequence: An unexpected stall increases the risk of a crash.
Remedy: Mazda will notify owners, and dealers will reprogram the PCM software, free of charge. The recall began August 20, 2019. Owners may contact Mazda customer service at 1-800-222-5500, option 4. Mazda's number for this recall is 3719F.
Engine
Mazda North American Operations (Mazda) is recalling certain 2018-2019 CX-5, Mazda6, and 2019 Mazda3 vehicles. A software error in the powertrain control module (PCM) may cause the engine to stall.
Consequence: An unexpected stall increases the risk of a crash.
Remedy: Mazda will notify owners, and dealers will reprogram the PCM software, free of charge. The recall began August 20, 2019. Owners may contact Mazda customer service at 1-800-222-5500, option 4. Mazda's number for this recall is 3719F.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.