2003 Mazda MAZDA6 problems & reliability
174 owner complaints filed with NHTSA for the 2003 Mazda MAZDA6, alongside 6 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
5 complaints report injuries (5 injured).
Federal crash records (FARS 2020–2023): 2003 Mazda MAZDA6 vehicles were involved in 14 fatal crashes with 13 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Engine and Engine Cooling | 36 | 21% |
| Power Train | 36 | 21% |
| Air Bags | 30 | 17% |
| Electrical System | 18 | 10% |
| Service Brakes, Hydraulic | 18 | 10% |
| Vehicle Speed Control | 18 | 10% |
| Structure | 11 | 6% |
| Engine | 10 | 6% |
| Fuel System, Gasoline | 9 | 5% |
| Suspension | 9 | 5% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 40,000 miles (middle 50% between 8,000 and 98,000 miles), based on 105 complaints that included mileage.
Complaints by incident year
What owners report
“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 NHTSA Campaign Number…”
Fuel System, Gasoline · filed Jan 25, 2022
“In 2018, the car was part of a trade in for a certified used car at my dealership. The car had over 350,000 miles and could no longer run.”
Air Bags · filed May 24, 2021
“When I take my foot off the gas it stays at the same speed or it speeds up on its own. When I press on the break sometimes it feels like it's not going to stop and just keep going or it jerks forward when I stop. This happens when I am driving on the road and the cruise control is not on when this happens.”
Service Brakes · filed Aug 3, 2020
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- Desiccated Air Bag Inflator Rupture
Engineering Analysis EA21002 · opened Sep 17, 2021 · open
- Air Bag Inflator Rupture
Engineering Analysis EA15001 · opened Feb 24, 2015 · open · led to recall 22V945
- Air Bag Inflator Rupture
Preliminary Evaluation PE14016 · opened Jun 11, 2014 · closed Mar 2, 2015 · led to recall 15V226000
- FUEL TANK SENDING UNIT SEAL LEAK
Preliminary Evaluation PE03047 · opened Oct 14, 2003 · closed Dec 24, 2003 · led to recall 03V531000
Technical service bulletins
209 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2003 Mazda MAZDA6. The 10 most recent:
This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted in Red text. 09-042/04 12/10/04 DESCRIPTION Some vehicles may exhibit inoperative electric rear window defroster grid lines…
09-022-26 · Service Bulletin/Repair Instructions · issued Jul 29, 2026
This Service Alert supersedes the previously issued SA listed below: The changes are noted in Red. SA-011/24 02/12/24, 06/06/24, 07/29/24 DESCRIPTION Mazda has developed factory recommended scheduled maintenance…
SA-029-26 · Service Bulletin/Repair Instructions · issued Apr 21, 2026
A musty/mildew type odor may come from the vents when the air conditioning (A/C) system is operating. It is most noticeable when the A/C is first turned ON. This odor is the result of mold growth in the A/C…
07-004-25a · Service Bulletin/Repair Instructions · issued Dec 10, 2025
When replacing the SiriusXM satellite radio unit, a call must be made to inform SiriusXM of the existing Radio ID and the new/replacement SAT Radio ID as soon as possible to ensure the customer leaves the dealership…
SA-036-25 · Service Bulletin/Repair Instructions · issued Aug 14, 2025
Some customers may complain about a noisy HVAC blower motor or odor after a cabin air filter replacement. Foreign debris on the blower motor after servicing the cabin air filter may be the cause. During the removal of…
SA-032-25 · Service Bulletin/Repair Instructions · issued Jun 19, 2025
A musty/mildew type odor may come from the vents when the air conditioning (A/C) system is operating. It is most noticeable when the A/C is first turned ON. This odor is the result of mold growth in the A/C…
07-004-25 · Service Bulletin/Repair Instructions · issued Apr 25, 2025
Some vehicles may experience exterior trim heat damage such (melted, separating, etc.) when parked near a glass building or Low-E windows. This may be caused by the sun's reflection.
SA-058-24 · Service Bulletin/Repair Instructions · issued Aug 15, 2024
In accordance with Federal regulations, follow the procedure listed below when replacing a speedometer. NOTE: Tampering with a motor vehicle odometer is strictly prohibited by Federal, and State laws. It is the dealer’s…
09-038-24 · Service Bulletin/Repair Instructions · issued Aug 8, 2024
Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as cited in the vehicle-specific workshop…
SA-011-24b · Service Bulletin/Repair Instructions · issued Jul 29, 2024
Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as cited in the vehicle-specific workshop…
SA-011-24a · Other · issued Jun 7, 2024
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2003 Mazda MAZDA6 has 6 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2003 Mazda MAZDA6?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Owners most often reported problems around 40,000 miles — budget accordingly if the car is approaching that mileage.