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2003 Mazda MAZDA6 fuel system problems

15 complaints (9% of all complaints for this car). Typical mileage when it fails: 86,900. 1 crash reported.

owner complaints
15
of this car's complaints
9%
typical mileage
86,900
crashes
1
recalls
1

Which part fails

  • Storage: tank assembly
    2
  • Delivery: fuel pump
    2
  • Delivery
    1

At what mileage

Complaints by mileage at the time of the problem.

0k-25k
25k-50k
50k-75k
75k-100k
100k-125k
125k-150k
150k-175k
175k-200k
200k+

Mazda MAZDA6 fuel system problems in other years

20032005201020152021

Related recalls

Fuel system, gasoline: deliveryReported December 16, 2003 · 56,700 vehicles affected
What is wrong
On certain passenger vehicles, the fuel sender unit (fsu) may have been improperly installed in the fuel tank, producing an inadequate seal, and fuel may leak.
Risk
A fire could occur in the presence of an ignition source.
Remedy
Dealers will inspect the top of the fuel tank, and if necessary, repair or replace it. Owner notification began february 9, 2004. Owners should contact mazda at 1‑800‑222‑5500.

Recall number 03V531000 · Recall details

Related investigations

Fuel tank sending unit seal leakOpened October 14, 2003, closed December 24, 2003

In some of the subject vehicles, the fsu lock ring seal may have been installed improperly.the fuel tank may be assembled with insufficient compression on the fsu lock ring seal due to cross-threading the lock ring, the seal may be out of position at the time of installation,or the fuel tank may be assembled with insufficient compression on the seal due to distortion of the tank shell.each of these conditions may result in fuel leakage and in the presence of a source of ignition, a vehicle fire could potentially occur.mazda will conduct a safety recall campaign to correct fsu seal installation problems in the subject vehicles.mazda dealers will inspect the top of the fuel tank and, if necessary, repair or replace the fsu lock ring, fsu lock ring seal, or tank.

PE03047

What 2003 Mazda MAZDA6 owners say

Most recent owner complaints, unedited.

Filed Jan 25, 2022 · Fuel system · 124,000 miles · SC

The contact owns a 2003 Mazda Mazda6. The contact stated that while starting the vehicle, the odor of fuel was present inside the cabin of the vehicle. The cause of the failure was not yet determined. The contact indicated that the vehicle was previously repaired for the same failure under the federal safety agency Campaign Number: 03V531000 (Fuel System, Gasoline). The local dealer and manufacturer were notified of the failure. The failure mileage was 124,000.

Filed Aug 28, 2019 · Airbags, Fuel system · 11,800 miles · WV · crash · 1 injury

I hit a deer at 45 miles an hour then hit the hit totalling the car, the airbag did not come out, the seat belt did not lock causing me to be slammed into the steeling wheel, now I suffer great pain, can't move my neck, can't lay down bc of such bad headache I throw up, I sleep sitting up, something in the car like metal fragment hit me in the left eye, now I can barely see out of my left eye. And must continue medical treatment. And someone is going to pay for my medical treatment and pain and suffering, bc that seat belt not locking caused my injuries, my insurance company totalled my car out bc of the severe damage to it.

Filed Aug 10, 2015 · Engine, Fuel system · 125,326 miles · CA

Tl* the contact owns a 2003 mazda 6. The contact stated while inspecting the vehicle, an unknown fluid started leaking onto the ground. The failure occurred without warning. The vehicle was taken to a dealer, where it was diagnosed that the radiator cap and coolant bypass fitting had malfunctioned. The vehicle was not repaired. The vehicle was taken to an independent mechanic, where it was repaired. The manufacturer was made aware of the issue. The approximate failure mileage was 125,326.

Filed Feb 25, 2015 · Airbags, Fuel system · 80,000 miles · MS

I asked mazda to fix the two recall issues and that have not called me nor set up an appointment for this repair.

Filed May 11, 2014 · Acceleration, Engine · 107,000 miles · OR

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.

Filed Apr 2, 2011 · Electrical, Engine · 82,000 miles · CA

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.

Filed Feb 24, 2011 · Fuel system · 112,000 miles · OH

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.

Filed Feb 9, 2010 · Acceleration, Brakes · 71,000 miles · OH

While driving home from my chardon, oh office on either aug 5 or 6, 2009 at 35 MPH my car's RPM needle started jumping and the car's "gas pressure" felt like it was hicupping. The RPM needle jumped from @2 to 4 twice, then the car started steadily accelerating in speed. The brake pedal at this time felt "hard" and the car was "fighting against my attempt to slow down" and the RPM's were still trying to accelerate. I imagine if I pushed on the brake and the gas pedal at the same time, it would simulate the way it felt. I also have a manual shift mode on my car and used it to more effectively slow down (vs using the brake) but at the same time the car was still trying to accelerate, but couldn't because I was in a lower gear/manual mode. And I remember while in manual gear 1, my car was lurching me back and forth in my seat as I drove through my neighborhood to get home, and my foot was off the gas pedal! On aug 12th, 2009 I mentioned this event to a mitsubishi dealer's mechanic (friend of my father) who was replacing my power steering line, he took a look at my car but said it seemed fine. My husband has been driving that car since that event, because I am afraid of it happening again. The car has not done this while my husband has been driving it. Not to sound like an oddball, but if I didn't know better I would have said my car was acting possessed, like the movie "christine". I have to think that there is some correlation to what my car did and what is going on with toyota. My husband is an electrical engineer and he used to work for grob systems, who does engineering for multiple automobile manufacturers, and I wonder if mazda has some same system in their automobile's as toyota and if it was engineered by the same supplier. I would swear on a bible that this happened to me with my car. (my husband left grob to move to cleveland and marry me). It sucks having this car now, it is paid off, I'm afraid to drive it, and I don't want to sell to an innocent stranger.

Filed Jan 26, 2009 · Fuel system · 86,900 miles · IN

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.

Filed Aug 7, 2008 · Fuel system · 128,000 miles · LA

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?

Questions about the 2003 Mazda MAZDA6 fuel system

Does the 2003 Mazda MAZDA6 have fuel system problems?

Owners have filed 15 complaints about the fuel system of the 2003 Mazda MAZDA6, 9% of all its complaints.

At what mileage do 2003 Mazda MAZDA6 fuel system problems start?

The typical (median) mileage in owner complaints is 86,900 miles.

Was there a recall on the 2003 Mazda MAZDA6 fuel system?

Yes, 1 recall: 03V531000. Check your VIN to see if your car still needs the free repair.

What year does the Mazda MAZDA6 have the most fuel system problems?

The Mazda MAZDA6 model years with the most fuel system complaints are 2003 (15 complaints) and 2009 (11 complaints).

Other 2003 Mazda MAZDA6 problems

Engine 46Transmission 36Airbags 30Brakes 24Acceleration 18Electrical 18Body 11Suspension 9Steering 7Tires 4Visibility 4Locks 2Seat belts 2Wheels 2Lights 1Seats 1

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