2003 Ford Mustang problems & reliability
145 owner complaints filed with NHTSA for the 2003 Ford Mustang, alongside 1 safety recall campaign. 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.
10 complaints report injuries (11 injured).
Federal crash records (FARS 2020–2023): 2003 Ford Mustang vehicles were involved in 70 fatal crashes with 56 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 | 39 | 27% |
| Seat Belts | 16 | 11% |
| Vehicle Speed Control | 16 | 11% |
| Power Train | 15 | 10% |
| Air Bags | 11 | 8% |
| Electrical System | 10 | 7% |
| Unknown OR Other | 10 | 7% |
| Suspension | 9 | 6% |
| Equipment | 7 | 5% |
| Engine | 6 | 4% |
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 18,300 miles (middle 50% between 6,075 and 48,000 miles), based on 86 complaints that included mileage.
Complaints by incident year
What owners report
“From all the research I have done on my vehicle, it has the Takata airbag inflators that uses phase‑stabilized ammonium nitrate without a desiccant which should have been in the Nationwide Ford vehicle recall. I am the original owner of my 2003 Mustang Mach 1 and it has never had the airbags replaced and I have never…”
Air Bags · filed Jan 27, 2026
“Because of Mustangs heavy doors the latch mechanism malfunctioned and the door came open on the highway. I realize the car is old but I have read up on other complaints on mustangs. The door was fine and within the couple of hours of seeing the problem I was driving 70 on the highway. And I heard the door ding go off…”
Unknown OR Other · filed Sep 26, 2025
“The Belt Strap will get twists along the length. The Body Pillar clip refuses free movement. This is aggrevating for a Driver in the Seat. Driver in vain pushes Power Seat back to allow the Belt to clip into Latch at the Console. Reality. The car is 22-yrs old. Owner expects indifference by the local Ford shop. Both a…”
Seat Belts · filed Mar 3, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- SPARK PLUG EJECTION FROM CYLINDER HEAD
Defect Petition DP05005 · opened Sep 22, 2005 · closed Jan 4, 2006
- ACCELERATOR PEDAL INTERFERENCE
Engineering Analysis EA05014 · opened Sep 13, 2005 · closed Apr 10, 2006 · led to recall 06V108000
- ACCELERATOR PEDAL INTERFERENCE
Preliminary Evaluation PE05038 · opened Jul 7, 2005 · closed Sep 13, 2005
Technical service bulletins
59 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2003 Ford Mustang. The 10 most recent:
Some 1997-2008 vehicles equipped with a 4.6l 2v, 5.4l 2v, or 6.8l 2v engine--spark plug thread repair procedure--not covered under new vehicle limited warranty. *nj this includes f-53 motorhome chassis. Updated 2/23/10…
07212 · Service Bulletin/Repair Instructions · issued Oct 1, 2007
Engine misfire with diagnostic trouble code (dtc) pewee, p0302, p0303, p0304, p0305, p0306, p0307, p0308, and p0316. *tt
06513 · Service Bulletin/Repair Instructions · issued Jan 1, 2006
Limited slip axle chatter, shudder, binding sensation, or vibration during low speed turning maneuvers. *tt
06216 · Service Bulletin/Repair Instructions · issued Jan 1, 2006
Wds cop kit diagnostic tip - coil on plug (cop) ignition systems - engine misfire or rough running. *tt
041601 · Service Bulletin/Repair Instructions · issued Nov 14, 2005
Safety belt retraction speed. *tt
042421 · Service Bulletin/Repair Instructions · issued Jun 7, 2005
Safety belt web stop button service. *eh
05310 · Service Bulletin/Repair Instructions · issued Feb 21, 2005
General (pcm) power train control module programming procedures. *tt
042107 · Service Bulletin/Repair Instructions · issued Dec 13, 2004
Steering rack noise. *tt squeak/creak noise from steering rack when turning. *sc
04248 · Service Bulletin/Repair Instructions · issued Dec 13, 2004
Rear window defroster grid/integral antenna diagnosis and repair - terminal tab repair. *tt
04189 · Service Bulletin/Repair Instructions · issued Dec 13, 2004
Exhaust leak - cracked or separated right side exhaust pipe - 3.8l and 3.9l engines. *tt
041003 · Service Bulletin/Repair Instructions · issued Nov 1, 2004
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 Ford Mustang has 1 NHTSA recall campaign — 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 Ford Mustang?
- · 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 18,300 miles — budget accordingly if the car is approaching that mileage.