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2004 Ford Mustang Gt

Owner reports · Recalls · Investigations

Limited comparison data

There is not enough comparable history to draw a useful model-year comparison.

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How this year compares

Owner complaints by model year

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Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

All reported categories

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

Limited mileage data: 11 of 14 reports include usable mileage. There isn’t enough coverage to show a useful chart.

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Engine And Engine Cooling. Review the 3 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Air Bags. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Electrical System. Review the 2 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

4 crash reports0 fire reports3 injury reports

What owners actually said

14 reports
15,000 miles · Jan 20, 2017
Service Brakes

FRONT BRAKES DRAG OR FREEEZE UP CAUSING EXTREME HEAT OR ACTUALLY STOP VEHICLE. CAR HAS 18,000 MILES. FRONT CALIPERS HAVE BEEN REBUILT TWICE. FIRST FAILURE AT TEN YEARS,THEN FAILED AFTER APX 3 YEARS. THE PROBLEM IS THE PHENOLIC PISTONS SWELL AFTER TIME OR DUE TO LOSE OF LUBRICATION. THEY CHANGE DIMENSION AND STICK IN THE CALI…

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FRONT BRAKES DRAG OR FREEEZE UP CAUSING EXTREME HEAT OR ACTUALLY STOP VEHICLE. CAR HAS 18,000 MILES. FRONT CALIPERS HAVE BEEN REBUILT TWICE. FIRST FAILURE AT TEN YEARS,THEN FAILED AFTER APX 3 YEARS. THE PROBLEM IS THE PHENOLIC PISTONS SWELL AFTER TIME OR DUE TO LOSE OF LUBRICATION. THEY CHANGE DIMENSION AND STICK IN THE CALIPER. THIS IS THE 3 RD VEHICLE WITH THE SAME PROBEM. 81 FORD F150, 98 FORD F150 FRONT DISK BRAKES. BOTH AFTER THE VEHICLE HAD BEEN ON THE ROAD ABOUT 10 YEARS. WHEN PISTONS HAVE BEEN REPLACED WITH METAL PISTONS I HAVE HAD NO MORE ISSUES WITH THE FRONT BRAKES. THE MUSTANG HAS NO METAL PISTON AVAILABLE AND HAD TO BE REBUILT WITH AFTER MARKET PHENOLIC PISTONS. THEY FAILED AGAIN PROBABLY BECAUSE OF LACK OF LUBRICATION OF BOOT AND PISTON. SOMEHOW I FEEL THIS IS A CHRONIC FAILURE AND HAPPENS A LOT WITHOUT ANYBODY BEING AWARE THAT TIME AND OR HEAT AFFECT THE PHENOLIC PISTON AND CAUSE BRAKE FAILURE.THIS FAILURE IS STRICTLY VEHICLE RELATED AND NOT DUE TO ANY EXTERNAL CAUSES EXCEPT TIME, HEAT, OR LUBRICATION. I FEEL THE WEIGHT OF THE NON METALLIC PISTON DOESN'T COMPENSATE FOR THE COST OF THE BRAKE FAILURE THAT IT CAUSES. I'VE BEEN TOLD BY FORD THAT THE PHENOLIC PISTONS WERE SELECTED TO SAVE WEIGHT.

NHTSA ODI #10946801

142,000 miles · May 31, 2015
Engine

AFTER STARTING ENGINE, SPARK PLUG EJECTED FROM BLOCK AND EXPLODED. ENGINE WAS IMMEDIATELY SHUT DOWN AND HAULED TO A REPAIR MECHANIC. COST OF REPAIR WAS $2,400 AND VEHICLE WAS IN SHOP FOR 5 DAYS. EXPLOSION WAS LOUD AND COULD HAVE CAUSED AN ACCIDENT WITH THE SHOCK OF THE LOUD NOISE.

NHTSA ODI #10722477

46,699 miles · Mar 20, 2012
Electrical SystemEngine And Engine CoolingFuel System, Gasoline

I STARTED THE CAR UP TO DRIVE OUT OF THE GROCERY PARKING LOT AND THE CAR WAS SPUTTERING. WHEN I PULLED ONTO THE MAIN HIGHWAY IT SPUTTERED AND COMPLETELY STOPPED RUNNING. I COASTED TO THE SIDE OF THE ROAD WHERE IT FAILED TO RESTART. *KB

NHTSA ODI #10452320

75,000 miles · Mar 14, 2012
Engine And Engine Cooling

ON MULTIPLE OCCASIONS THE NUMBER FIVE SPARK PLUG KEEPS BLOWING OUT OF THE HEAD. THE CAR HAS MOTORCRAFT SPARK PLUGS AND ARE TORQUED TO THE FACTORY SPECIFICATIONS. WHILE LOOKING INTO THE PROBLEM ONLINE I FOUND OUT THAT IM NOT THE ONLY PERSON HAVING THIS PROBLEM. THE CRAZY THING IS THAT ITS IS ONLY HAPPENING WITH THE NUMBER FIVE PL…

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ON MULTIPLE OCCASIONS THE NUMBER FIVE SPARK PLUG KEEPS BLOWING OUT OF THE HEAD. THE CAR HAS MOTORCRAFT SPARK PLUGS AND ARE TORQUED TO THE FACTORY SPECIFICATIONS. WHILE LOOKING INTO THE PROBLEM ONLINE I FOUND OUT THAT IM NOT THE ONLY PERSON HAVING THIS PROBLEM. THE CRAZY THING IS THAT ITS IS ONLY HAPPENING WITH THE NUMBER FIVE PLUG. *TR

NHTSA ODI #10451577

Mileage unknown · Feb 28, 2011
Service Brakes, Hydraulic

BRAKE LIGHT AND TRACTION CONTROL LIGHT AND ABS LIGHT INTERMITTENT..THEN ON CONSTANTLY...HASN'T BEEN FIXED TOO EXPENSIVE...IN WET WEATHER, SLIPPERY, ICY WEATHER TIRES SPIN BECAUSE TRACTION CONTROL DOES NOT WORK...ABS CONTROL MODULE WENT BAD...THOUSANDS OF PEOPLE HAVE BLOGS AND FORUMS COMPLAINING ABOUT THIS PART...I WILL POST THIS…

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BRAKE LIGHT AND TRACTION CONTROL LIGHT AND ABS LIGHT INTERMITTENT..THEN ON CONSTANTLY...HASN'T BEEN FIXED TOO EXPENSIVE...IN WET WEATHER, SLIPPERY, ICY WEATHER TIRES SPIN BECAUSE TRACTION CONTROL DOES NOT WORK...ABS CONTROL MODULE WENT BAD...THOUSANDS OF PEOPLE HAVE BLOGS AND FORUMS COMPLAINING ABOUT THIS PART...I WILL POST THIS WEBSITE WITH HOPES THEY ALL COMPLAIN! *TR

NHTSA ODI #10384838

30,000 miles · Jul 17, 2010
Electrical SystemEquipmentExterior Lighting

THE TOP OF THE CLUTCH PEDAL ASSEMBLY WHEN DEPRESSED AND RELEASED RUBS THE WIRING HARNESS TO THE BRAKE SWITCH, NEUTRAL SAFETY SWITCH AND OTHERS SHORTING OUT THE BRAKE LIGHTS AND MAKING THE CRUISE CONTROL INOPERABLE. IT WORKS FOR A WHILE BUT THEN IT BLOWS THE FUSE AGAIN AND SOMEONE HAS TO STOP ME AND TELL ME MY BRAKE LIGHTS DON'T …

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THE TOP OF THE CLUTCH PEDAL ASSEMBLY WHEN DEPRESSED AND RELEASED RUBS THE WIRING HARNESS TO THE BRAKE SWITCH, NEUTRAL SAFETY SWITCH AND OTHERS SHORTING OUT THE BRAKE LIGHTS AND MAKING THE CRUISE CONTROL INOPERABLE. IT WORKS FOR A WHILE BUT THEN IT BLOWS THE FUSE AGAIN AND SOMEONE HAS TO STOP ME AND TELL ME MY BRAKE LIGHTS DON'T WORK. THE DEALER HAS REPLACED ONE OF THE WIRES FOR THE BRAKE SWITCH WHICH IS IN THAT SAME WIRING HARNESS AND SAYS THE PROBLEM IS FIXED BUT SOONER OR LATER IT WILL RUB THE REST OF THE WIRES BARE TOO. I HAVE ALSO REPLACED THE BRAKE SWITCH A COUPLE TIMES BECAUSE WHEN IT SHORTS OUT IT MELTS IT IF THE FUSE DOESN'T BLOW RIGHT AWAY. I AM AFRAID ONE TIME SOMEONE WILL REAR END ME OR I WILL GET A TICKET. *TR

NHTSA ODI #10343764

Mileage unknown · Jul 16, 2010
Seat Belts

PASSENGER SIDE SEATBELT RETRACTOR COMPLETELY FAILED; MY PASSENGERS ARE NOT ABLE TO BUCKLE THEIR SEATBELT. *TR

NHTSA ODI #10343559

26,000 miles · Mar 15, 2010
Vehicle Speed Control

TL* THE CONTACT OWNS 2004 MUSTANG GT. THE DEALER CONFIRMED THAT THE CRUISE CONTROL DEACTIVATION SWITCH CAUSED THE FUSE FOR THE BRAKE LIGHTS TO BURN OUT, WHICH MADE THE BRAKE LIGHTS INOPERABLE. THE FUSE WAS REPLACED CONTINUOUSLY AND IT CONTINUED TO FAIL. THE FAILURE MILEAGE ON THE VEHICLE WAS 26000 AND THE CURRENT MILEAGE WAS …

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TL* THE CONTACT OWNS 2004 MUSTANG GT. THE DEALER CONFIRMED THAT THE CRUISE CONTROL DEACTIVATION SWITCH CAUSED THE FUSE FOR THE BRAKE LIGHTS TO BURN OUT, WHICH MADE THE BRAKE LIGHTS INOPERABLE. THE FUSE WAS REPLACED CONTINUOUSLY AND IT CONTINUED TO FAIL. THE FAILURE MILEAGE ON THE VEHICLE WAS 26000 AND THE CURRENT MILEAGE WAS 35000. UPDATED 06/03/10*BF THE CONSUMER STATED THE BRAKE LIGHTS WORK, BUT NOT THE CRUISE CONTROL HAS STOPPED WORKING ALTOGETHER. UPDATED 06/10/10.*JB

NHTSA ODI #10319950

95,000 miles · Apr 19, 2009
Engine And Engine Cooling

I OWN A 2004 MUSTANG WITH A 4.6 DOHC ENGINE. LAST NIGHT THE SPARK PLUG BLEW OUT OF THE HEAD. THE HEAD NOW NEEDS TO BE REPAIRED BY USING A HELICOIL OR SOMETHING SIMILAR. THIS IS A HUGE PROBLEM WITH THE FORD MODULAR ENGINES, CAUSED BY POOR DESIGN. AT LEAST 75% OF THE PEOPLE I KNOW WHO OWN FORDS WITH MODULAR ENGINES HAVE HAD THIS P…

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I OWN A 2004 MUSTANG WITH A 4.6 DOHC ENGINE. LAST NIGHT THE SPARK PLUG BLEW OUT OF THE HEAD. THE HEAD NOW NEEDS TO BE REPAIRED BY USING A HELICOIL OR SOMETHING SIMILAR. THIS IS A HUGE PROBLEM WITH THE FORD MODULAR ENGINES, CAUSED BY POOR DESIGN. AT LEAST 75% OF THE PEOPLE I KNOW WHO OWN FORDS WITH MODULAR ENGINES HAVE HAD THIS PROBLEM. *TR

NHTSA ODI #10265983

89,000 miles · Feb 29, 2008
Air BagsCrashInjury

DRIVING ON HIGHWAY AT 50 MPH AND HIT BLACK ICE AND LOST CONTROL. KNOCKED DOWN A 6*6 INCH SIGN POST . CONTACT POINT WAS RIGHT FRONT BUMPER. FRAME WAS BENT, MASSIVE FRONT END DAMAGE . CAR WAS WRITTEN OFF. NEITHER AIR BAG DEPLOYED. WHIPPING FORWARD ACTION CAUSED A BROKEN BACK. SINGLE VEHICLE ACCIDENT AND LONE OCCUPANT. *TR

NHTSA ODI #10219762

Official recalls

0

No recalls in this snapshot.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

0

No exact-year investigations in this snapshot.