The 2003 Ford Mustang has no open NHTSA recalls. Owners report 7 recurring issue clusters, led by “Accelerator pedal sticking at carpet or floor mat.” Ford uses the Intelligent Oil-Life Monitor (IOLM) to determine when oil changes are due based on actual driving load — not just mileage. Ford's published cap is 10,000 miles or 1 year, whichever comes first. The schedule below reflects Ford's Normal service intervals; F-Series trucks and Super Duty have additional towing-specific items.
No open recalls on file. NHTSA lists no unrepaired safety recalls for this year, make and model. A recall can be issued at any time, and a specific car can still have one open — check yours by VIN at nhtsa.gov/recalls.
What drivers and federal regulators have officially reported about the 2003 Ford Mustang.
VEHICLE SPEED CONTROL
23 NHTSA complaints · 2005-06 → 2014-01
“ACCELERATOR PEDAL HANGS UP IN CARPET AND VEHICLE IS AT FULL THROTTLE WITHOUT ABILITY TO SLOW DOWN”
“DRIVERS SIDE FLOOR MATT IS CAUSING THE GAS PEDAL TO STICK AT FULL THROTTLE”
“GAS PEDAL CATCHES ON VEHICLE CARPET PREVENTING DECELERATION. THE HINGE OF THE GAS PEDAL LODGES UNDERNEATH THE LIP OF THE CARPET KEEPING THE VEHICLE ACCELERATOR DEPRESSED DURING DRIVING CONDITIONS”
SEAT BELTS
19 NHTSA complaints · 2005-08 → 2025-03
“PASSENGER SIDE SEAT BELT FAILURE - WILL NOT RETRACT OR COME OUT”
“DRIVER SIDE SEAT BELT GETS TWISTED AND WONT RETRACT AND GETS SHUT IN DOOR IF YOU DON'T PAY ATTENTION, PASSENGER SIDE SEAT BELT IS STUCK AND WONT COME OUT OR WORK AT ALL”
“MY COMPLAINT IS ABOUT THE SEAT BELTS. THEY GET TWISTED UP EVERY TIME YOU USE THEM. MY PASSENGER SEAT BELT IS LOCKED RIGHT NOW AND I CANT EVEN USE IT”
ENGINE AND ENGINE COOLING
10 NHTSA complaints · 2005-09 → 2017-06
“WAS GOING 25 MPH WHEN SPARK PLUG BLEW OUT OF MY 2003 FORD MUSTANG”
“5 OF MY SPARK PLUGS ON MY 2003 MUSTANG GT 4.6 POPPED OUT OF THE SPARK PLUG HOLE IN THE CYLINDER HEAD”
“SPARK PLUG WAS SPIT OUT OF HEAD. IT HAS THE FACTORY PLUGS IN IT NEVER BEEN CHANGED”
POWER TRAIN
13 NHTSA complaints · 2004-01 → 2006-10
“GRINDING 2ND GEAR WHEN SHIFTING UP FROM 1ST GEAR. MUCH WORSE IN COLD TEMPERATURES. DOWN SHIFT OKAY. TREMEC 3650 TRANSMISSION. DEALER STATES CONDITION IS NORMAL”
“MANUAL TRANSMISSION SERIES 3650 ON 2003 FORD MUSTANGS GRIND AND/OR LOCK OUT UPON SHIFTING INTO 2ND GEAR AS WELL AS IN TO THIRD AS THE PROBLEM CONTINUES”
“MY 2003 MUSTANG GT WITH A MANUAL TRANSMISSION (5 SPEED), GRINDS WHEN I GO FROM FIRST GEAR TO SECOND GEAR. THIS GRINDING GOES AWAY AFTER THE CAR IS WARM AND IS MUCH WORSE IN THE WINTER AND COLD DAYS”
ENGINE AND ENGINE COOLING
8 NHTSA complaints · 2004-02 → 2012-02
“ENGINE STALLS WHEN PARKING OR COASTING AT 5 TO 10 MPH OR WHEN COMING TO A STOP”
“CAR OCCASIONALLY AND RANDOMLY STALLS WHEN SLOWING TO STOP OR MAKE A TURN AFTER CLUTCH IS DEPRESSED”
“JULY 2007 THROUGH CURRENT DATE. CAR STALLS WHEN PUSHING IN CLUTCH TO STOP OR MAKE TURNS”
AIR BAGS
4 NHTSA complaints · 2004-07 → 2017-10
“AIR BAG FAILED TO DEPLOY. MAKING A LEFT HAND TURN FROM A DRIVEWAY INTO THE STREET AND WAS HIT WITH SPEED OVER 40MPH”
“DURING A 30 MPH REAR END COLLISION, THE CONSUMESR AIR BAG DID NOT DEPLOY”
“TL* THE CONTACT OWNED A 2003 FORD MUSTANG. THE CONTACT'S VEHICLE CRASHED INTO A FIRE HYDRANT, SPUN OUT, AND CRASHED INTO A RESIDENCE. THE AIR BAGS FAILED TO DEPLOY”
AIR BAGS
4 NHTSA complaints · 2005-06 → 2013-03
“MAKING A RIGHT TURN IN A RESIDENTIAL NEIGHBORHOOD WITH A SPEED OF APROX. 10 MPH THE AIRBAGS SUDDENLY DEPLOYED ON THE DRIVERS SIDE AND THE PASSENGERS SIDE”
“DRIVER SIDE AND PASSENGER SIDE AIRBAGS DEPLOYED WHILE I WAS DRIVING HOME”
“THE PASSENGER SIDE AIRBAG DEPLOYED FOR ASOLUTELY NO REASON WHATSOEVER”
Issues on other model years
Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Sep 20, 2026. Investigation data refreshed Sep 20, 2026.
We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.
Critical for safety and preventing major damage
Replace synthetic-blend or full-synthetic Motorcraft oil per the IOLM, or every 7,500-10,000 miles. EcoBoost engines require full synthetic; Coyote 5.0L V8 specifies SAE 5W-30.
Estimated cost — typical U.S. ranges
Dealer
~$120–$160
Shop
~$85–$115
DIY
~$25–$55
Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.
Rotate tires every 10,000 miles, or with every other oil change. F-150 4x4 owners should rotate every 5,000-7,500 miles to even out drivetrain bias wear.
Estimated cost — typical U.S. ranges
Dealer
~$85
Shop
~$60
DIY
Free
Often free at the shop where you bought the tires — worth asking before paying.
Inspect brake pads, rotors, and brake fluid level every 10,000 miles. Front pads on F-150 and Explorer typically last 40,000-60,000 miles.
Estimated cost — typical U.S. ranges
Dealer
~$85
Shop
~$60
DIY
Free
Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.
Ford specifies brake fluid replacement on an inspection basis, but moisture testing every 3 years is recommended. Replace if reading exceeds 3% water content.
Estimated cost — typical U.S. ranges
Dealer
~$180–$200
Shop
~$125–$140
DIY
~$10–$25
DOT 3 or 4 — match the cap. Vacuum bleeders make this a one-person DIY.
Keeps your vehicle running smoothly and efficiently
Replace the engine air filter every 30,000 miles. EcoBoost turbocharged engines are sensitive to airflow restriction — don't extend.
Estimated cost — typical U.S. ranges
Dealer
~$60–$95
Shop
~$45–$70
DIY
~$15–$40
5-minute job on most cars; the airbox lid usually has clips, no tools needed.
Ford 6R80, 10R80, and 8F transmissions use Mercon LV fluid rated 150,000 miles under normal service. Severe service (towing, plowing) drops this to 60,000 miles.
Estimated cost — typical U.S. ranges
Dealer
~$330–$500
Shop
~$235–$355
DIY
~$60–$180
Some sealed transmissions have no dipstick — fill is precise and best left to a shop. Many drivers can still DIY drain-and-fill.
F-Series and Expedition: replace rear axle fluid every 100,000 miles, or 50,000 miles if towing. Limited-slip rear ends require friction-modifier additive.
Estimated cost — typical U.S. ranges
Dealer
~$150–$195
Shop
~$105–$135
DIY
~$20–$50
Drain plug + fill plug — straightforward DIY. AWD vehicles have two; budget for both.
Iridium spark plugs on Coyote 5.0L, EcoBoost 2.7L/3.5L, and 2.3L are rated 100,000 miles. EcoBoost engines: never exceed the interval — gap erosion causes coil failure.
Estimated cost — typical U.S. ranges
Dealer
~$285–$390
Shop
~$200–$275
DIY
~$25–$100
Iridium plugs cost more but last 100k+ miles. V6/V8 access varies wildly — some are tough.
Motorcraft Orange (Dex-Cool compatible) coolant: first change at 100,000 miles, then every 50,000. Older trucks with Yellow Motorcraft coolant: 50,000 miles throughout.
Estimated cost — typical U.S. ranges
Dealer
~$285–$330
Shop
~$200–$235
DIY
~$25–$60
Use the manufacturer-specified coolant — wrong color/chemistry can damage the cooling system.
Extends the life of your vehicle and improves comfort
Replace the cabin air filter every 20,000 miles. On F-150, located behind the glove box; on Escape and Explorer, accessed from the passenger footwell.
Estimated cost — typical U.S. ranges
Dealer
~$60–$95
Shop
~$45–$70
DIY
~$15–$40
Usually behind the glovebox. Shops charge labor for a 10-minute job — easy DIY win.
Occupant deaths in fatal crashes (FARS)
476 crashes 1990–2024
How the 476 occupant deaths break down
327
driver deaths
145
passenger deaths
4
not recorded by seat
476
occupant deaths
Crash years covered: 1990–2024 This model year first appears in 2003 crashes. Older models have had more years on the road to appear in these crashes, so a higher count here does not by itself mean a vehicle is less safe.
FARS counts every occupant death in a fatal crash, whatever the cause — it does not mean the vehicle was at fault or defective. Counts are not adjusted for how many of each vehicle are on the road. How to read this number
FARS 2024 data is an annual report file. NHTSA revises these records when the final file is published, so this count can change.
Every vehicle has exactly one driver seat, so driver deaths line up fairly when you compare one model to another. Occupant deaths include passengers, so a three row SUV can show a higher number than a two seat car simply because it carries more people.
Both figures are plain counts, not rates. A rate would need to know how many of each vehicle are on the road, and that registration data is not public, so we do not publish rates or scores of any kind.
IIHS publishes driver death rates using this same driver only idea, paired with a registered vehicle years denominator we do not have. Their rates and these counts answer different questions, so do not read either number here as a safety rating.
Owner-reported problem signals
Separate from the federal fatality data above: complaints owners filed with NHTSA about this year and model. These are reports of problems, unverified, and are counted here only as signals.
23
complaints mentioning a crash
6
complaints mentioning a fire
Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.
How we estimate: Dealer = OEM parts × 1.4 + labor × $165/hr. Shop = parts + labor × $115/hr. DIY = parts only.
This maintenance schedule for the 2003 Ford Mustang reflects Ford's published service intervals and the Intelligent Oil-Life Monitor system. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.