Most common 2021 Mazda Mazda6 problems
Share of the 17 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Mazda Mazda6 complaints by model year
Best Mazda6 years: 2019, 2013, 2021. Years to avoid: 2009, 2010, 2014, 2003. Compare all years →
What 2021 Mazda Mazda6 owners say
Engine & cooling
The low oil pressure light had turned on shortly after my first oil change (roughly at around 6k miles). I had the service done at a trusted service shop back in April 2021. I wrote it off mentally thinking that it was just a one off thing and that the shop may have made a mistake and underfilled the engine because of unclear specifications between the mazda6 Turbo version vs other models within the same lineup. I measured the oil and confirmed it was low and topped it off with over a half quart of oil and never bothered with it again. Six months later I return to the same shop for an oil change at 11k miles. I had no issues up until the 17k miles month mark when I am about to schedule the oil service the low oil pressure light turns on once again. I top it off and go online to see similar experiences with the same issue experienced by other drivers.
The contact owns a 2021 Mazda Mazda6. The contact stated that the oil light continually illuminated on the instrument panel while driving at various speeds. The contact had taken the vehicle to the dealer where he was informed that the vehicle was consuming an excessive amount of oil. Upon investigation, the contact discovered information that a defective valve in the engine might have been the cause of the failure. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 11,800.
2021 Mazda Mazda6 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 2.5L 4-cyl | 6-speed automatic | FWD | 26 / 35 / 29 |
| 2.5L 4-cyl turbo | 6-speed automatic | FWD | 23 / 31 / 26 |
EPA ratings. Class: Midsize car.
Frequently asked questions
Is the 2021 Mazda Mazda6 a good car?
Based on 17 owner complaints filed with NHTSA, the 2021 Mazda6 rates better than average: 50% fewer complaints than a typical year of the Mazda6 at the same age. It is one of the best Mazda6 years by this measure. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2021 Mazda Mazda6?
The engine & cooling — 13 complaints, 76% of all complaints for this model year. Next are the windows, wipers & sunroof (2) and fuel & propulsion system (1).
How many recalls does the 2021 Mazda Mazda6 have?
NHTSA lists no recalls for the 2021 Mazda Mazda6. You can still confirm with your VIN using our VIN recall check.
What are the best and worst years of the Mazda Mazda6?
The best years by complaints, compared at the same age, are 2019, 2013 and 2021. Years to avoid or approach with caution: 2009, 2010, 2014 and 2003. See the full Mazda Mazda6 years comparison.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.