What Owners Report NHTSA ODI · 2,175,102 complaints · MY1998–2026

1999 Ford Mustang GT

No clear pattern

0% of complaints about the 1999 Ford Mustang GT arrived in its first year of service. That is an unusual figure for a 1999 vehicle, but with only 40 complaints on record the sample is too small to call it a pattern — the margin of error covers the range where ordinary vehicles sit. The figures below are reported without a verdict. The most-reported system is engine cooling (23 complaints), typically at 7.8 yr or about 60,000 miles.

Complaints
40
Median age at failure
7.0 yr
Median mileage
53,564 n=33
Crash / fire / tow
7.5% of reports
Safety recalls
0

When each system is reported — middle 50% of complaints

System
0y2y4y6y8y10y12y14y
Engine cooling
23 reports · 60,000 mi
7.8 yr
0%

In owners’ own words

Engine cooling 60,000 mi 4.8 yr in service
1999 FORD MUSTANG GT- AUTOMATIC TRANSMISSION. ENGINE STALLS INSTEAD OF IDLING WHEN VEHICLE IS STARTED, COMES TO REST OR DURING LOW SPEED MANEUVERS. *NLM
Engine cooling 56,650 mi 5.1 yr in service
CAR STALLS WHEN SLOWING TO A STOP AND HAS HAPPENED SEVERAL TIMES. TOOK THE CAR TO FORD AND CLEANED THE THROTTLE BODY AND REFLASHED THE COMPUTER. THE PROBLEM CAME BACK SEVERAL DAYS LATER AND CHANGED THE IDLE AIR CONTROL VALVE YET THE PROBLEM STILL ARISES. WHEN SLOWING TO A STOP THE RPM DROP TO 500 RPM AND THEN BOUNCED BACK UP TO AN IDLE AT 700 RPM. OTHER TIMES THAT IT WILL DROP BELOW 500 RPM, AND THE CAR STARTS TO STALL. *LA
Engine cooling 53,564 mi 6.8 yr in service
CRACK ON THE PLASTIC INTAKE MINFOLD AT THE THERMOSTAT HOUSING ALLOWING ANTI-FREEZE TO LEAK ON THE ENGINE. THE INTAKE MANIFOLD MUST BE REPLACED AT MY EXPENSE. FORD IS AWARE OF THIS PROBLEM AND HAS RECALLED THE FAULTY INTAKE MINIFOLDS ON ALL FLEET VEHICLES BUT REFUSES TO DO ANYTHING FOR PRIVATELY OWNED VEHICLES. THIS IS NOT RIGHT!!!

Other Mustang GT model years

2006200520032002200019991998

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