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1999 Ford MUSTANG GT problems and owner complaints

Explore the records behind recurring owner reports.

Key facts

36 owner complaints analyzed

0 distinct recall campaigns

53,564 mi median reported failure mileage

Scope: 1999 model year. Data snapshot: . 29 complaints include usable failure mileage.

Owner-reported patterns

Most common problems

Engine And Engine Cooling:Engine is the most frequently named component, appearing in 10 of 36 complaints (27.8%). A complaint can name multiple components.

Recurring terms in complaint narratives
TopicMatching reportsShare of complaints
Engine operation411.1%
Braking behavior38.3%
Transmission and shifting25.6%
Steering behavior25.6%
Electrical and battery issues12.8%

Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.

Component breakdown

Number of unique complaints naming each component. Top eight shown.

Engine And Engine Cooling:Engine
10
Engine And Engine Cooling
5
Engine And Engine Cooling:Cooling System
3
Engine And Engine Cooling:Exhaust System:Manifold/Header/Muffler/Tail Pipe
3
Vehicle Speed Control
3
Air Bags:Frontal
2
Seats:Front Assembly:Recliner
2
Electrical System:12v/24v/48v Battery
1
Component breakdown data
CategoryCount
Engine And Engine Cooling:Engine10
Engine And Engine Cooling5
Engine And Engine Cooling:Cooling System3
Engine And Engine Cooling:Exhaust System:Manifold/Header/Muffler/Tail Pipe3
Vehicle Speed Control3
Air Bags:Frontal2
Seats:Front Assembly:Recliner2
Electrical System:12v/24v/48v Battery1

Engine And Engine Cooling:Engine: 10; Engine And Engine Cooling: 5; Engine And Engine Cooling:Cooling System: 3; Engine And Engine Cooling:Exhaust System:Manifold/Header/Muffler/Tail Pipe: 3; Vehicle Speed Control: 3; Air Bags:Frontal: 2; Seats:Front Assembly:Recliner: 2; Electrical System:12v/24v/48v Battery: 1

Reported problems by failure mileage

Complaint counts in mileage bands. These are not failure rates per vehicle or mile.

Under 25,000
3
25,000 to 49,999
8
50,000 to 74,999
8
75,000 to 99,999
6
100,000 to 149,999
4
150,000 and above
0
Reported problems by failure mileage data
CategoryCount
Under 25,0003
25,000 to 49,9998
50,000 to 74,9998
75,000 to 99,9996
100,000 to 149,9994
150,000 and above0

Under 25,000: 3; 25,000 to 49,999: 8; 50,000 to 74,999: 8; 75,000 to 99,999: 6; 100,000 to 149,999: 4; 150,000 and above: 0

25,000 to 49,999 miles has the most reports with usable mileage (8). 7 complaints have missing, zero or invalid mileage.

Complaints over time

Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.

2000
1
2002
1
2003
8
2004
4
2005
8
2006
6
2007
2
2008
2
2009
1
2010
1
2012
1
2014
1
Complaints over time data
CategoryCount
20001
20021
20038
20044
20058
20066
20072
20082
20091
20101
20121
20141

2000: 1; 2002: 1; 2003: 8; 2004: 4; 2005: 8; 2006: 6; 2007: 2; 2008: 2; 2009: 1; 2010: 1; 2012: 1; 2014: 1

Pattern summary

Engine And Engine Cooling:Engine leads the component reports. Engine operation appears in 4 complaint narratives. Braking behavior appears in 3 complaint narratives. Transmission and shifting appears in 2 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.

Calculated from recorded counts. An AI narrative has not been published for this selection.

Complaint evidence

Examples provide context, not a representative sample or a verified diagnosis.

Owner report 10023115 · 2003-06-16 (June 16, 2003)

1999 FORD MUSTANG GT- AUTOMATIC TRANSMISSION. ENGINE STALLS INSTEAD OF IDLING WHEN VEHICLE IS STARTED, COMES TO REST OR DURING LOW SPEED MANEUVERS. *NLM

Owner-reported narrative. 60,000 miles reported. Look up ODI 10023115 at NHTSA ↗

Owner report 10037023 · 2003-09-02 (September 2, 2003)

99 FORD MUSTANG GT OTH FRONT SEATBELTS DO NOT RETRACT BACK INTO REEL. NEED TO BE FED BACK INTO REEL.AR STALLS SOMETIMES FOR NO REASON ON HIGHWAY.*AK

Owner-reported narrative. 38,500 miles reported. Look up ODI 10037023 at NHTSA ↗

Owner report 10005675 · 2003-02-11 (February 11, 2003)

UNPREDICTABLE PROBLEM. OCCASIONALLY, 5 TO 15 SECONDS AFTER I FIRST START MY 1999 MUSTANG GT, THE ENGINE WILL RAPIDLY INCREASE IN RPM AND THEN RETURN TO NORMAL. IF THE CAR IS IN DRIVE OR REVERSE AND I DO NOT HAVE MY FOOT FIRMLY ON THE BRAKE, THE CAR WILL JUMP FORWARD OR BACKWARD. I NOTICE THE PROBLEM MOSTLY WHEN I FIRST PUT THE CAR IN REVERSE. IT MAY HAPPEN 3 OR 4 TIMES IN ONE MONTH AND MAY NOT HAPPEN AGAIN FOR 2 OR 3 MONTHS. IF YOU DO NOT HAVE THE BRAKE APPLIED FIRMLY, I THINK THE CAR COULD EASILY JUMP 5 FEET BEFORE GETTING A FOOT ON THE BRAKE…

Owner-reported narrative. 100 miles reported. Look up ODI 10005675 at NHTSA ↗

Owner report 10136047 · 2005-09-09 (September 9, 2005)

THIS PAST MAY, AFTER DRIVING A 1999 FORD MUSTANG CONVERTIBLE 50,000 MILES IT WAS INADVERTENTLY DISCOVERED THAT THE FRONT LEFT SUSPENSION SYSTEM HAD ONLY ONE OF TWO BOLT HOLDING THAT ENTIRE SYSTEM TO THE FRAME OF THIS CAR. IT APPEARS THAT THIS 4 INCH BOLT WAS NEVER FASTENED TO THE VEHICLE ALTHOUGH THIS CAR WAS INSPECTED A DOZEN TIMES BY THE DEALER. THIS APPARENTLY DANGEROUS DEFECT WAS DISCOVERED BY AN INDEPENDENT BRAKE SHOP NOT FORD. SINCE MAY OF 2005 THIS VEHICLE HAS BEEN IN STORAGE AWAITING SOME ANSWER BY FORD; NOT UNTIL FOLLOW-UP CALLS WE…

Owner-reported narrative. Look up ODI 10136047 at NHTSA ↗

Owner report 10139866 · 2005-10-17 (October 17, 2005)

MY CAR IS LOSING COOLANT THROUGH A CRACK IN THE PLASTIC INTAKE MANIFOLD. FORD WILL NOT REPAIR IT UNDER ANY WARRANTY. IT IS A DESIGN FLAW THAT FORD SHOULD TAKE CARE OF! ALSO MY CAR SURGES IN RPMS WHEN FIRST STARTING AND SHIFTING INTO DRIVE,,,VERY DANGEROUS!!!!! *NM

Owner-reported narrative. 75,000 miles reported. Look up ODI 10139866 at NHTSA ↗

Owner report 10043898 · 2003-10-29 (October 29, 2003)

THERE WAS A SERIOUS MALFUNCTION IN THE DRIVERS SEAT ON MY 1999 FORD MUSTANG GT THAT COULD HAVE EASILY CAUSED AN ACCIDENT. I WAS DRIVING DOWN THE HIGHWAY IN LAS VEGAS RETURNING FROM WORK WHEN WITHOUT ANY WARNING, THE MECHANISM THAT HOLDS THE SEAT BACK UP FAILED AND THE SEAT BACK FAIL BACK ON THE REAR SEAT. LUCKILY, I HAD A FIRM GRIP ON THE STEERING WHEEL AND WAS ABLE TO AVOID AN ACCIDENT. I HAD NEVER HAD PROBLEMS WITH THIS SEAT BEFORE, AND IT WAS SUBJECT TO NORMAL WEAR AND TEAR. WHEN I CONTACTED FORD, THEY SAID THAT IT WAS NOT THEIR PROBLEM.…

Owner-reported narrative. 53,000 miles reported. Look up ODI 10043898 at NHTSA ↗

Owner report 10090521 · 2004-09-06 (September 6, 2004)

THE INCIDENT OCCURRED WHILE DRIVING ON MY WAY TO WORK, ABOUT A BLOCK AWAY FROM MY RESIDENCE. THE SEAT BACK JUST UNEXPECTEDLY FELL TO A FULL RECLINE AGAINST THE BACK SEAT. I WAS ABLE TO DRIVE THE CAR BACK TO MY RESIDENCE SO I COULD EVALUATE WHAT HAD HAPPENED. I TRIED TO VISUALLY SEE IF I COULD IDENTIFY THE PROBLEM BY TRYING TO REPOSITION THE SEAT. I ENDED UP REMOVING THE BLACK PLASTIC COVER, WHICH IS FASTENED OVER THE LEVER/LATCH ASSEMBLY, TO EXPOSE THE INTERNAL MECHANISM OF THE LEVER/LATCH ASSEMBLY ON THE RECLINING SEAT BACK. UPON REMOVING THE …

Owner-reported narrative. 70,015 miles reported. Look up ODI 10090521 at NHTSA ↗

Owner report 873958 · 2000-10-26 (October 26, 2000)

BATTERY WAS CHARGING BECAUSE AMP WAS DRAINING THE BATTERY. VEHICLE WOULD HAVE TO BE JUMPED. DEALER REPLACED AMP, AND THEY SAID IT WAS A DESIGN FLAW. VEHICLE WOULD GET STUCK IN REVERSE. PROBLEM WAS INTERMITTENT. MANAGEMENT A DEALERSHIP SAID IT WILL HAPPEN TIME TO TIME.*AK

Owner-reported narrative. Look up ODI 873958 at NHTSA ↗