10.0

really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
0 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2021 Mazda MAZDA6 engine problems

engine problem

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2021 Mazda MAZDA6 Owner Comments

problem #13

Dec 172023

MAZDA6

  • miles

A D V E R T I S E M E N T S

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

- Chula Vista, CA, USA

problem #12

Jun 242023

MAZDA6

  • miles
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.

- Jacksonville, FL, USA

problem #11

May 122022

MAZDA6

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

- Garrison, MN, USA

problem #10

Apr 242023

MAZDA6

  • miles

A D V E R T I S E M E N T S

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?

- Enfield, CT, USA

problem #9

Feb 282023

MAZDA6

  • miles
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.

- Honolulu, HI, USA

problem #8

Oct 242022

MAZDA6

  • miles
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.

- Pompano Beach, FL, USA

problem #7

Oct 012021

MAZDA6

  • miles

A D V E R T I S E M E N T S

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!!!

- Charlotte, NC, USA

problem #6

Aug 282022

MAZDA6

  • miles
Vehicle displays low engine oil light about every 1,000 miles due to burning oil from faulty valve stem seals from factory assembly. Mazda has acknowledged the defect but plans to only refill engine oil. The defect could lead to possible injury due to low oil which could cause the engine to seize and cause sudden loss of power.

- Baton Rouge, LA, USA

problem #5

Sep 182022

MAZDA6

  • miles
The engine oil low light has illuminated multiple times. I verified that there is no external engine oil leak. I have added oil and driven it for a couple thousand miles and the light is now on again. The car is brand new and should not be burning oil. Its a known issue as Mazda has a service bulletin but no fix for it. This is the bulletin number TSB-01-012/21.

- Mckinney, FL, USA

problem #4

Jul 172022

MAZDA6

  • miles
Excessive oil consumption. Recently purchased new vehicle with 0 miles. Oil low level warning light on at 3500 miles. Manually checked oil level. Added one quart. Online research indicates problem is created by faulty valve guide seals which allows oil into the engine combustion chamber and exhaust. Vehicle will be taken to dealership for inspection.

- The Villages, FL, USA

problem #3

Jul 132022

MAZDA6

  • miles

A D V E R T I S E M E N T S

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.

- Anaheim, CA, USA

problem #2

Jul 062022

MAZDA6

  • miles
Low engine oil light came on at around 13,700. Last oil change was at 10,000 miles. Checked oil dipstick, oil level slightly below first marker hole.

- Winter Haven, FL, USA

problem #1

Jun 112022

MAZDA6

  • miles
The issue I am experiencing is one that many are in regards to the oil consumption. My check oil light came on prematurely in regards to the recommended scheduling for these sorts of vehicles, at around 3500 miles approximately. This is a vehicle that experienced this issue under 10k miles.

- Concord, NH, USA

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