2018 Mazda Mazda6 problems and complaints
Owners have filed 58 complaints with NHTSA about the 2018 Mazda Mazda6. The most-reported areas: Engine (32), Power Train (9), Unknown Or Other (9).
Key takeaways
- 58 owner complaints on file with NHTSA.
- 1 involve a crash, 1 a fire, 1 reported injury.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Engine | 32 | 55% |
| Power Train | 9 | 16% |
| Unknown Or Other | 9 | 16% |
| Fuel/Propulsion System | 4 | 7% |
| Service Brakes | 4 | 7% |
| Electrical System | 4 | 7% |
| Suspension | 3 | 5% |
| Fuel System | 3 | 5% |
| Gasoline | 3 | 5% |
| Wheels | 2 | 3% |
| Structure | 2 | 3% |
| Visibility/Wiper | 2 | 3% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2018 Mazda Mazda6 4 DR FWD | 5/5 | 5/5 | 5/5 | 4/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Tether, Lower Anchor (on Car Seat Or Vehicle),other/I Am Not Sure - filed 2026-08-29
Have had 3 seats replaced under warranty by Graco and was told to make a report with you. The rigid latch anchors on two have been faulty after 2 months. The second one got stuck in the installed base and pulling the release button did nothing. The rigid latch on the first got stuck in the open position. The second the...
Wheels,fuel/Propulsion System - filed 2026-08-28
Fuel pump is leaking, just as all the other 2018-2020 fuel pumps but mine doesn’t qualify for the recall.
Engine - filed 2026-08-07
The car only has 70k miles on it. The engine started smoking under the hood. Immediately stopped to look. There was oil leaking but I could not see from where. I took it across the street to the Toyota dealership and had them look at it. They explained to me that there was a crack in the cylinder head and oil was leaki...
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More for the 2018 Mazda Mazda6
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.