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2004 Ford Mustang Recalls, Problems & Maintenance

The 2004 Ford Mustang has no open NHTSA recalls. Owners report 7 recurring issue clusters, led by “Accelerator pedal stuck on floor carpet.” 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.

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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.

Known issues & problems for this vehicle

What drivers and federal regulators have officially reported about the 2004 Ford Mustang.

Reported to NHTSA

Accelerator pedal stuck on floor carpet

VEHICLE SPEED CONTROL

48 NHTSA complaints · 2005-06 → 2019-12

“2004 MUSTANG - ACCELERATOR PEDAL STUCK AT FULL THROTTLE MULTIPLE TIMES. APPEARS TO BE CAUSED BY PEDAL COMPONENT STICKING UNDERNEATH CARPET”
— Owner report, NHTSA ODI #10128635
“GAS PEDAL GETS CAUGHT ON THE CARPET AND STICKS AT FULL THROTTLE”
— Owner report, NHTSA ODI #10124154
“WHILE DRIVING MY 2004 MUSTANG COBRA, AT ACCELERATION MY GAS PEDAL GOT STUCK UNDER THE CARPET, CAUSING THE CAR TO ACCELERATE A FULL THROTTLE. I SHUT THE CAR OFF IMMEDATELY TO AVOID BLOWING THE ENGINE AND/OR CRASHING”
— Owner report, NHTSA ODI #10128903

Read all complaints on NHTSA →

Tire tread separation and blowout

TIRES

4 NHTSA complaints · 2006-06 → 2012-05

“WHILE DRIVING APPROXIMATELY 55 MPH, THE SIDEWALL OF THE PASSENGER REAR TIRE BLEW OUT WITHOUT WARNING”
— Owner report, NHTSA ODI #10213686
“DT*: THE CONTACT STATED THERE WERE TWO SEPARATE BLOWOUTS ON SAME TYPE OF TIRE WHILE DRIVING AT 80 AND 50 MPH”
— Owner report, NHTSA ODI #10160785
“EAGLE LS BACK SIDE RIGHT TIRE BLEW OUT SEPARATED FROM THREAD AROUND WHOLE TIRE 4 HOLES IN TIRE SPEED WAS 40MPH THANKS GOD NO RAIN DIDN'T RUN OVER ANYTHING”
— Owner report, NHTSA ODI #10252951

Read all complaints on NHTSA →

ABS and traction control warning lights

SERVICE BRAKES, HYDRAULIC

3 NHTSA complaints · 2006-01 → 2019-04

“ABS BRAKE LIGHT IS ON THIS IS UNSAFE IN WET OR SNOWY CONDITIONS”
— Owner report, NHTSA ODI #11197105
“BRAKE LIGHT AND TRACTION CONTROL LIGHT AND ABS LIGHT INTERMITTENT..THEN ON CONSTANTLY...HASN'T BEEN FIXED TOO EXPENSIVE”
— Owner report, NHTSA ODI #10384838
“ANTI-LOCKING BRAKING SYSTEM (ABS) AND TRACTION CONTROL FAILED. THE SERVICE LIGHT WENT ON AND I IMMEDIATELY TOOK THE CAR IN FOR REPAIR”
— Owner report, NHTSA ODI #10148327

Read all complaints on NHTSA →

Seat belt retractor and tension failure

SEAT BELTS

3 NHTSA complaints · 2009-09 → 2014-08

“PASSENGER SIDE SEATBELT RETRACTOR COMPLETELY FAILED; MY PASSENGERS ARE NOT ABLE TO BUCKLE THEIR SEATBELT”
— Owner report, NHTSA ODI #10343559
“PASSENGER SIDE FRONT SEAT BELT RETRACTS ONLY AND WILL NOT EXTEND, SO THEREFORE IS NON-FUNCTIONAL”
— Owner report, NHTSA ODI #10618681
“IF YOU RECLINE THE SEAT BACK, AND THE SEATBELT IS THROUGH THE PLASTIC LOOP ATTACHED TO SEAT, IT LOOSES TENSION AND FAILS TO RESTRAIN YOU”
— Owner report, NHTSA ODI #10283316

Read all complaints on NHTSA →

Spark plug blowout from cylinder head

ENGINE

4 NHTSA complaints · 2009-04 → 2017-07

“THE SPARK PLUGS HAVE A TENDENCY TO BLOW OUT. AN EXPLOSION MAKES THE PLUG STRIP THE THREADS AND DO DAMAGE TO THE HEAD”
— Owner report, NHTSA ODI #11006037
“AFTER STARTING ENGINE, SPARK PLUG EJECTED FROM BLOCK AND EXPLODED. ENGINE WAS IMMEDIATELY SHUT DOWN AND HAULED TO A REPAIR MECHANIC”
— Owner report, NHTSA ODI #10722477
“ON MULTIPLE OCCASIONS THE NUMBER FIVE SPARK PLUG KEEPS BLOWING OUT OF THE HEAD”
— Owner report, NHTSA ODI #10451577

Read all complaints on NHTSA →

Air bags not deploying in collision

AIR BAGS

9 NHTSA complaints · 2004-07 → 2016-11

“WE WERE IN AN ACCIDENT ON 2-28-2016 AND WAS HIT FROM THE SIDE AND PUSHED INTO A DITCH WHILE PASSING A FORD 250 HE TURNED INTO US WHILE DRIVING 50 MPH. THE AIRBAGS DID NOT GO OFF”
— Owner report, NHTSA ODI #10839547
“FRONT IMPACT 35-40 MPH AIRBAGS NEVER DEPLOYED”
— Owner report, NHTSA ODI #10155565
“I WAS DRIVING HIGHWAY SPEED 68 MPH WHEN A CAR CROSSED THE MEDIAN 30 FEET IN FRONT OF ME AND I HAD A TOTAL LOSS HEAD ON COLLISION WITH NO AIR BAG..... IT FAILED TO OPEN ?”
— Owner report, NHTSA ODI #10198490

Read all complaints on NHTSA →

Brake caliper sticking or failure

SERVICE BRAKES, HYDRAULIC

5 NHTSA complaints · 2005-09 → 2021-01

“2004 FORD MUSTANG REAR BRAKE CALIPER/PISTON FAILURE. THE FAILURE RESULTED IN A NEAR FIRE ON THE RIGHT REAR OF THE VEHICLE”
— Owner report, NHTSA ODI #10222080
“FRONT BRAKES DRAG OR FREEEZE UP CAUSING EXTREME HEAT OR ACTUALLY STOP VEHICLE. CAR HAS 18,000 MILES. FRONT CALIPERS HAVE BEEN REBUILT TWICE”
— Owner report, NHTSA ODI #10946801
“CASUAL DRIVER. NOTICED ACCELERATION AND COASTING/ROLLING WERE SLUGGISH. MECHANIC NOTED BRAKE AREA TEMP ON FRONT DRIVER'S SIDE WAS OVER 400 DEGREES”
— Owner report, NHTSA ODI #11387317

Read all complaints on NHTSA →

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.

Raw data + downloads for this vehicle →

Essential maintenance

Critical for safety and preventing major damage

Engine Oil & Filter

Every 7,500 mi

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.

Tire Rotation

Every 10,000 mi

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.

Brake Inspection

Every 10,000 mi

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.

Brake Fluid

Every 45,000 mi

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.

Important maintenance

Keeps your vehicle running smoothly and efficiently

Engine Air Filter

Every 30,000 mi

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.

Automatic Transmission Fluid

Every 150,000 mi

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.

Rear Differential Fluid

Every 100,000 mi

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.

Spark Plugs

Every 100,000 mi

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.

Engine Coolant

Every 50,000 mi

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.

Recommended maintenance

Extends the life of your vehicle and improves comfort

Cabin Air Filter

Every 20,000 mi

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.

Fatal crash history & reported problems

Occupant deaths in fatal crashes (FARS)

357 crashes 1990–2024

How the 357 occupant deaths break down

268

driver deaths

89

passenger deaths

357

occupant deaths

Crash years covered: 1990–2024 This model year first appears in 2004 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.

Why we show driver deaths too

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.

24

complaints mentioning a crash

0

complaints mentioning a fire

Reviewed known issues for this vehicle

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 2004 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.

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