2021 MAZDA Mazda6 Problems

Complaints Reported

Complaints by Component

ENGINE

11 complaints

Engine oil low warning 2k miles after oil change and again a week after topping oil off.

Dec 17, 2023

My car displayed a low oil level light between oil changes and after checking the dipstick it was low. No sign of visible oil leak so upon further research I was made aware of a TSB about defective valve seals causing excessive oil consumption. My cars VIN is in the affected range outlined in the TSB. Now when I drive it's likely that slow but permanent damage could be occuring in my vehicle.

Jun 25, 2023

Low oil light comes on. Using excessive oil between oil changes.

May 12, 2023

Excessive oil burn. I have 12,7000 miles on my engine and the car is burning ~1 quart of oil every 3k miles and increasing.

Feb 28, 2023

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.

Oct 31, 2022

+ 6 more complaints for this component

VISIBILITY/WIPER

2 complaints

Sunroof exploded while on the highway. Nothing hit the glass. Glass was facing outward and no evidence if anything striking it. Major safety concern, easily could have blinded my wife or I.

Apr 07, 2022

Visibility/safety issue with OEM Mazda windshields. Objects appear highly distorted from all angles, making it hard to judge distance, read road signs, and drive safely without a disorienting level of distraction occurring at all times. Some objects appear magnified while others seem shrunken, as well as shorter or taller than they actually are. Straight lines appear rippled and in some cases, completely broken. Operating the vehicle for more than a few minutes results in rapid eye fatigue, motion sickness, and vertigo.

Dec 27, 2021

BACK OVER PREVENTION

1 complaint

The Infotainment system malfunctions. The rear view camera freezes, not with the current conditions but a still picture of a street I do not recognize. This puts not only myself at risk for an accident but those of others as well. This malfunction has been taken into the dealership on two different occasions. Each time the dealer couldn't solve the issue. There is currently a class action lawsuit regarding the Infotainment system.

Jun 23, 2025

UNKNOWN OR OTHER

1 complaint

Twice had low oil warning lamp appear. First time in July 2023, 2nd time in June 2024. Both times oil has just been changed 2-3 months prior. Saw articles that there was a recent lawsuit, which is why I am filling complaint as well. Not for lawsuit, but for repairs so this does not occur again.

Jul 01, 2024

ENGINE,FUEL/PROPULSION SYSTEM

1 complaint

Oil Consumption Defect. I bought car on 7/10/21. Mazda aware of the problem at the time and still sold me the car. Since then I have had to add oil in between oil changes. Mazda states problem cannot be fixed. My car vin # included with defected cars. My Limited New Car Warranty will be up soon. I am aware others have concacted you with this problem. Can you tell me what is being done about this?

Apr 24, 2023

UNKNOWN OR OTHER,ENGINE

1 complaint

I been having problems with oil consumption in between oil changes,I am concerned with the potential for damage to other engine systems aside from the reported issue with the gasket stem seals. I been taking my car to the dealership and I been told they don’t have a solution and they don’t know how to fix it. This is a new car!!!

Oct 31, 2022

⭐

4.4/5.0

23 reviews

Frequently Asked Questions

How many problems does the 2021 MAZDA Mazda6 have?

The 2021 MAZDA Mazda6 currently has 17 owner-reported complaints according to NHTSA database. These complaints are organized by component to help identify common issues.

What are the most common problems with 2021 MAZDA Mazda6?

The most common problems reported for the 2021 MAZDA Mazda6 are organized by component above. Each component section shows owner-reported issues, crash reports, and fire incidents to help identify patterns and problem areas.

Where does this 2021 MAZDA Mazda6 problem data come from?

All problem and complaint data for the 2021 MAZDA Mazda6 comes directly from the National Highway Traffic Safety Administration (NHTSA) database. These are real complaints submitted by actual vehicle owners.