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2003 Ford Mustang problems

The most common problem on the 2003 Ford Mustang is engine and cooling, typically around 5,350 miles. It has fewer complaints than a typical Mustang model year.

Typical yearClose to a typical year
Year score
81/100
Owner complaints
145
Recalls
1
Service bulletins
59
Worst area
Engine
Fuel economy
17-21mpg

The worst 2003 Ford Mustang problems

Ranked by number of owner complaints. Mileage and cost come from what owners wrote.

Problems by type

Tap a problem to see which part fails, at what mileage and in which other years.

Specific symptoms reported on the 2003 Ford Mustang

Stalling 34Loss of power 8Seat belt 8No deployment 7

Recalls 1

Vehicle speed control: accelerator pedalReported April 7, 2006 · 19,140 vehicles affected
What is wrong
On certain mustang cobra passenger vehicles, the rear surface of the accelerator pedal may come into contact with floor carpeting during heavy throttle application. The unique surface profile of the accelerator pedal may catch in the cutout on the floor carpeting behind the accelerator pedal.
Risk
This could interfere with the pedal's ability to return to an idle position. Unexpected, continued throttle application and/or increased stopping distances may occur which could result in a crash.
Remedy
Dealers will install a shield over the cutout in the carpet behind the accelerator pedal. The recall began on april 26, 2006. Owners may contact ford at 1‑800‑392‑3673.

Recall number 06V108000 · Recall details

See all 1 recalls for the 2003 Ford Mustang

Defect investigations

Spark plug ejection from cylinder headOpened September 22, 2005, closed January 4, 2006

On september 6, 2005, odi received a petition requesting that the agency investigate allegations of engine spark plug ejection in certain model year 1997 through 2004 ford vehicles with triton v-8 and v-10 engines.odi received a total of 474 non-duplicative complaints on the subject vehicles where the complainant, or the dealer repairing the vehicle, reported that a spark plug detached from the cylinder and/or ejected from the engine.as of december 8, 2005, odi is not aware of any allegations where the alleged defect resulted in a loss of vehicle control, a crash, an injury, or a fatality in any of the 10,319,810 subject vehicles.in addition, odi is aware of only two incidents where the vehicle stalled without restart.information contained in the odi consumer complaints and obtained from 72 telephone interviews with complainants showed the following:(1) 99% of the complaints were on my 1997 to 2002 subject vehicles.(2) most the complainants reported hearing a loud pop while driving or upon starting up the vehicle followed by a loud, repetitive clicking or popping sound.(3) many of the complainants reported that the popping sound was accompanied by some loss of vehicle power; however, in 99% of the incidents reported, the vehicle did not stall.in the very few incidents where the vehicle did stall, most vehicles could be restarted.(4) only a small percentage of the complainants cited that they smelled gas or a slight burning smell when the incident occurred.(5) in all but a very few incidents, vehicle damage was limited to the engine.in one incident, the complaint reported that the fuel rail was damaged and replaced after one of the spark plugs ejected from the engine; however, the complainant reported that the damage did not result in any type of fuel leak or fire.in another incident, the only incident where a fire was alleged, the complainant reported that no fluid leak was observed, but that a fire resulted after the spark plug had ejected from the engine and he had restarted the vehicle and driven to another location.none of the complainants reported any damage to the vehicle hood.(6) only two complainants reported that they observed what appeared to be some drops of fuel coming from the cylinder where the spark plug had failed or on the spark plug itself; however, each of these complainants reported that there was no smoke or flames as a result of his incident.as the petitioner noted, and odi?s analysis showed, it is possible for a spark plug to detach from the engine cylinder threads in the subject vehicles.however, odi?s analysis of 474 complaints describing such incidents found only a very few alleged any safety-related consequences.none of these showed any evidence of a serious safety consequence.given the large population and relatively long exposure time of the subject vehicles, the complaint analysis indicates that the risk to motor vehicle safety from the alleged defect is very low.in view of the foregoing, it is unlikely that the federal safety agency would issue an order for the notification and remedy of the alleged defect at the conclusion of the investigation requested in the petition.therefore, in view of the need to allocate and prioritize the federal safety agency?s limited resources to best accomplish the agency?s safety mission, the petition is denied.

DP05005

Accelerator pedal interferenceOpened September 13, 2005, closed April 10, 2006

On april 3, 2006, ford motor company submitted a defect information report to the federal safety agency concerning a defect condition that could result in interference between the accelerator pedal and floor carpeting in approximately 19,140 model year 2003 and 2004 mustang cobra vehicles (ford recall no. 06s43/the federal safety agency recall 06v‑108, copy attached).ford will recall the vehicles to install a shield beneath the accelerator pedal to prevent the pivot pin on the rear surface of the pedal from coming into contact with the floor carpeting during heavy throttle application.in those vehicles where the floor carpeting does not fit flush with the sheet metal, the unique rear surface profile of the mustang cobra pedal may allow the pivot pin of the pedal to catch in the cutout on the floor carpeting behind the pedal, interfering with the pedal's ability to return; the result of which could be unexpected, continued throttle application.during the engineering analysis stage of the investigation, odi also examined the possiblity of the same phenomena occuring in non-cobra mustangs.however, the different design of the accelerator pedals on the non-cobra mustangs results in significant differences in the potential contact between the accelerator pedal and the carpeting, with the base of the pedal pad acting to force the carpet away from the pivot pin.this engineering analysis has been closed.

EA05014

Accelerator pedal interferenceOpened July 7, 2005, closed September 13, 2005

Pe05-038 was opened on july 7, 2005, with 11 consumer complaints to odi alleging incidents of throttle sticking due to accelerator pedal interference with the carpet.odi has received an additional 24 complaints since the pe was opened.during pe05-038, ford supplied complaint and warranty information regarding 86 additional incidents of accelerator pedal interference in model year 2003 to 2004 mustang cobra vehicles.eighty-five of these had concerns of accelerator pedal sticking, 70 of which were analyzed as being related to carpet interference.odi is continuing its analysis of the causal factors in the remaining 15 incidents.this preliminary evaluation has been upgraded to an engineering analysis.

PE05038

Technical service bulletins for the 2003 Ford Mustang 59

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

See all 59 bulletins for the 2003 Ford Mustang

2003 Ford Mustang fuel economy

Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.

EngineDriveCityHighwayCombined
3.8L 6‑cylRWD1725-2720-21
4.6L 8‑cylRWD15-1621-2317-19

What 2003 Ford Mustang owners say

Most recent owner complaints, unedited.

Filed Jul 16, 2026 · Brakes, Engine · FL

Breaks went out

Filed Jul 16, 2026 · Brakes, Engine · FL

Breaks went out

Filed Jan 27, 2026 · Airbags · CA

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 received a recall notice. I had Ford run an OASIS report on my VIN and they tell me there is no recall for my car. I told them the reports don't show data past 15 years. After all these years I thought I was safe because my car never showed it had the Takata recall, so I didn't think mine had them. Now after watching a YouTube documentary and doing research, I am now afraid to drive my car. What can be done about this?

Filed Sep 26, 2025 · Body · MO

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 and something told me to grab the door. It was all I could do to get back home. Which has now led to other issues like the door sagging and the window is now messed up.

Filed Mar 11, 2025 · Electrical, Lights · AL · fire

Burning of terminal on brake light switch wiring. Brake lights left on.

Filed Mar 3, 2025 · Seat belts · TX

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 neighbor & the Owner had a hard time about service. What does the Owner thinks a good solution? Late Model Restoration is this Model's best parts hope. A indy-body shop near the home of the car a repair alternative. Owner is [XXX] in a [XXX] & uses the Car as a Daily Driver. May be able to upload images of the car. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Mar 8, 2024 · Electrical · FL · fire

Date of incident....sometime over night 1/27/24. Vehicle FIRE I believe started in electrical components. Happened overnight while PARKED in front of home in parking lot Melted left side of dash (all odometer area) and center console where AC controls and radio are. Shattered front windshield which was black with soot, as well as the plastic frame around front area of convertible top. Fire has somehow extinguished itself. Whole interior car full of soot. I had actually used my key FOB to enter my car at which time I noticed what had happened & all the damage. I immediately disconnected my battery. The engine did not look damaged. The fire seemed to have stayed behind firewall. My insurance company TOTALED my car out due to the fact of it being an ELECTRICAL CAUSE TO FIRE & even if it could've been repaired, was told parts (dash, odometer area which was COMPLETELY melted) were obsolete. Regardless, the car now has posed a serious DANGER. I have photos & totaled decision by insurance company information, but have been unable to upload on your site. I believe you should REALLY SEE THE PICTURES. After incident, I searched to see if there had been any recalls. I found a couple incidents of this happening to others with their 2003 MUSTANGS & am wondering why this had never been investigated. If I had known about a problem of electrical fires, this car would NOT have been purchased in 2017. I don't understand why this problem wasn't researched. It could've been so much worse as I had a FULL TANK OF GAS.

Filed Mar 14, 2023 · Brakes, Electrical · NY

Flooded salvage title not listed

Filed Jun 6, 2019 · Tires · 108,400 miles · AZ

I was driving 40 miles an hour and rear passanger tire without sound pretty much just shredded of tred .

Filed Apr 16, 2019 · Engine · 195,000 miles · FL

The exhaust pipe breaks where the A/C water drips. This is due to poor design of the car. This article describes it better. Https://ford.oemdtc.com/100/exhaust-leak-cracked-or-separated-right-side-exhaust-pipe-1999-2004-ford-mustang

Used buying checklistWhat to check on a 2003 Ford Mustang before you buy

Compare the 2003 Ford Mustang

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Other model years

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Questions about the 2003 Ford Mustang

Is the 2003 Ford Mustang reliable?

Owners have filed 145 complaints about the 2003 Ford Mustang, fewer than a typical Mustang model year.

What is the 2003 Ford Mustang year score?

The 2003 Ford Mustang scores 81 out of 100 (good). The score compares it with the other model years of the Ford Mustang: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.

What is the most common problem with the 2003 Ford Mustang?

Engine and cooling, with 45 complaints, typically around 5,350 miles. Next is acceleration (16).

How many recalls does the 2003 Ford Mustang have?

1 recall, covering vehicle speed control.

What year does the Ford Mustang have bad engine?

The Ford Mustang model years with the most engine complaints are 1995 (341 complaints), 1994 (162 complaints) and 1996 (84 complaints).

What gas mileage does the 2003 Ford Mustang get?

Official estimates for the 2003 Ford Mustang range from 17 to 21 mpg combined. The most efficient version (3.8L 6-cyl, RWD) gets 17 city and 25-27 highway.

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