definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
22,500 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.

2004 Mazda MAZDA6 engine problems

engine problem

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2004 Mazda MAZDA6 Owner Comments

problem #2

Dec 222006

MAZDA6 4-cyl

  • Manual transmission
  • 45,000 miles


Driving on a highway from Chicago to Wisconsin I noticed a knock in my engine that turned into 2 thrown pistons through my engine block. I work for a crash test facility. Cars are a daily component in my life. The engine had 45,000 miles on it and Mazda rejected my warranty claim. I ended up settling with the dealership and transferring my loan to a used car. I wanted to post this occurrence of engine failure to make sure it wasn't a common occurrence.

- Burlington, WI, USA

problem #1

Dec 012004


  • miles
Consumer requesting information to be included in Mazda owners manual. That vehicle may cut out or lose power, etc. While driving. The consumer requested to have information added to the manual regarding the consumers need to watch RPM's and let off of the gas before the engine gets to the red line and shuts itself down. When the throttle is fully depressed while passing, the engine downshifts as it is supposed to but will never upshift again until the driver consciously pats the accelerator to make it upshift or the engine hits the redline on the RPM module.

- Crossett, AR, USA

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