hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
86,033 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.

2003 Mazda MAZDA6 fuel system problems

fuel system problem

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2003 Mazda MAZDA6 Owner Comments

problem #6

May 022014

MAZDA6 4-cyl

  • 107,000 miles


Was at a stop sign to make a left turn half way thru the car stalled and all lights came on, vehicle behind me almost ran into us. Barely got pulled over to the side of the road had to turn car off and then back on the check engine light remained on but vehicle would drive, after about 5 starts the light came off had the car checked, was told it was the throttle body. One week later same thing wet to pull onto a busy street and car stalled almost causing another wreck, tried to drive it home and stopped at the grocery store, when I went to pull in the car stalled again in the middle of the street, blocking on coming traffic. Called Mazda to see how much it would cost to be fixed, the lady told me that if it was still under warranty it would be free but that expired in 2011. I have seen many of the same complaints about this, Mazda has admitted to it being a problem but has not recalled it. We have two kids and thank god nothing serious has happened with us in the car. This problem could very easily cause injury or deaths to any drivers on the road.

- Portland, OR, USA

problem #5

Aug 012010


  • 82,000 miles
On several models of Mazda 6's Mazda has issued a tsb for the problem which is a defective throttle position sensor. I have read thousands of complaints by consumers. Mazda has made a new part yet not recalled the old part. When this part fails you lose all acceleration power to the vehicle. The way to reset this is to turn off the motor and turn it right back on. I was driving on a two-lane highway crossed over the broken double yellow line to pass another vehicle when this defective part failed and I lost all acceleration. Thankfully, I had just enough time to be able to allow the same car I was passing to pass me and I pulled off the roadway. The car worked fine for the rest of that trip it occurred again on the freeway in the fast lane. I contacted Mazda corporate customer care they advised me that they were aware of the issue but had not issued a recall at this time.

- Clovis, CA, USA

problem #4

Nov 222010

MAZDA6 4-cyl

  • 112,000 miles
Car engine stopping while running and a no start. Service engine light warnings over a long time. One repair by Mazda on the gas cap repair, but I have also uncovered a recall on leaking seals at the tank on 2003 models, 03V-531. Service light again came on from 10/18/10 -10/30/10. While out of town the car sat airport parking on my return it stopped without warning at a light 11/22/10, but all lights and radio stations were active, so no battery problem. After adjusting the filler gas cap several times I found it wasn't closing and could be pulled right off. We have made sure the cap is on tightly each time and since cancelled the dealer appointment for a $100 inspection, no light since. 2/9/11 after driving 35 miles the car would not restart, aaa came out and no battery trouble, but a 30 mile towing was required to my home. The vehicle sits in a garage avg temp of 35-45F. The next morning after several attempts and using both keys it restarted and we took it into a dealer. @2 days later they find a "service bulletin" 901-009/07) from 2007. Possible @ -30C (zerof) the no start or crank due to moisture within the main relay and/or fuel pump relay. That night 25-30F in Nov no way close. On 02/12/11 while driving on IS77 the car quite running again, 911 called as I made it to the side of the road under heavy fast moving traffic. This week on 2/22 while in the garage hesitant to turn over again but did start on the 3rd try, vehicle temp reading was 47F. So now for 2 new parts for 2003-2005 models and $450+ repairs can be made. The parts are in and per the bulletin looks more like a by-pass option than replacing a defective oem part. Cutting out while driving is very serious, as much so as acceleration on a Toyota. Since my company is tied to the tire/wheel & auto mfg and we conduct 1/2 dot tire test for the usa, I'm pretty sure I know what I'm talking about on defects.

- Uniontown, OH, USA

problem #3

Jan 012009


  • 86,900 miles


My car has had 4 recalls. I purchased the car in 2006 not knowing that parts had been recalled 3 times. I recently fixed a problem in my car that I feel make have had something to do with recall #3, the fuel sender unit.

- Indianappolis, IN, USA

problem #2

Aug 072008


  • 128,000 miles
2003 Mazda 6 recall 1403L, campaign # 03V531000, on my vehicle supposedly was repaired in baton rouge at diamond Mazda in 2004, but car is leaking in the same area that was a problem to begin with now. So the workmanship where they repair the seal is not very good. Four years later I buy the car and it is poor gas on the top of my gas tank out of the seal around the fuel pump which just happens to be right under where my child sits. So I've been in a time bomb just waiting to go off. No one can give me proof or paper work of where this recall has been taken care of. Now suppose that it did blow up and kill or injure myself and my 3 year old daughter. Wouldn't Mazda be at fault for not properly repairing the vehicle?

- Ball, LA, USA

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problem #1

Oct 012003

MAZDA6 4-cyl

  • Automatic transmission
  • 300 miles
I purchased my 2003 Mazda 6S in October 2003. Since I have owned the car I gets poor gas mileage on it (about 16-18 miles per gallon). I do plenty of city driving but I still feel that this is not adequate. Even when I drive on the highway the gas mileage averages poorly. There is also a smell coming from the exhaust when vehicle is in motion. The vehicle also rev's up higher before switching from lower gears to higher gears. I do not 'jack rabbit' start or stop the vehicle. There is also alot of brake dust on the rims of the front wheels. Acceleration is very poor. There is also a jerk when the vehicle switches from first gear to second. Don't get me wrong I love the way the vehicle looks, which is the main reason why I bought the vehicle, but the overall quality has turned out to be much poorer than I had expected.

- Elkhart, IN, USA

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