1999 Ford Mustang
Common problems & what to know before you buy
Before you message the seller, know the documented failure patterns, repair cost exposure, and risk level for the 1999 Ford Mustang.
What to watch for on the 1999 Ford Mustang
MT82 Transmission (2015-2017)
Manual transmission has known issues with shift fork failure, gear lockout at high RPM. The 2018+ Getrag unit is significantly improved.
Coyote Cylinder Deactivation (2018+)
Some reports of spark plug fouling in deactivated cylinders. A tune can disable this feature. Not widespread but worth noting.
2 more known problems on the 1999 Mustang
Your guide shows all of them and which apply to the exact car, and what to ask the seller.
1999 Ford Mustang price ranges
2018+ GT is the sweet spot — better transmission, updated engine. GT350s are appreciating. EcoBoost is $5,000-8,000 less than equivalent GT.
Recalls on the 1999 Ford Mustang
Exterior lighting
THESE HEADLAMPS FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO.
Exterior lighting: headlights
DOPE, INC.
Exterior lighting
CERTAIN ALFAOTTO COMBINATION HEADLAMPS SOLD AS REPLACEMENT LAMPS FOR USE ON THE ABOVE LISTED PASSENGER VEHICLES.
7 more in the guide, with whether each one was done on the car you're looking at.
Source: NHTSA
What 313 owners reported
Source: NHTSA
1999 Ford Mustang at a glance
- Trims
- BaseGTSVT Cobra
- Engine
- 3.8L 6-Cylinder, 4.6L 8-Cylinder, 4.6L 8-Cylinder DOHC
- Transmission
- Automatic 4-spd, Manual 5-spd
- Drivetrain
- RWD
- Fuel
- Gasoline
- Body style
- Coupe
Ford Mustang (S550) Buyer's Guide
Coyote V8 and EcoBoost
The S550 Mustang brought independent rear suspension for the first time, transforming it from a straight-line car to a genuine sports coupe. Three engine options: the 2.3L EcoBoost, 5.0L Coyote V8, and Shelby GT350/GT500 variants.
What changed: The 2018 refresh brought a revised 5.0L with dual injection (port + direct), a 10-speed automatic replacing the 6-speed, and updated styling. The 2020 GT500 added a 760 hp supercharged V8.
Which to buy: The 2018+ GT with the 10-speed auto is the sweet spot. The 2015-2017 MT82 manual has known issues. The EcoBoost is great value if you don't need V8 sound, but the GT holds value better.
Other Ford Mustang years
Free Car Finder
Still deciding on the 1999 Ford Mustang?
Answer a few quick questions and see your top 3 used cars, with the years to shop.
Frequently asked questions
Auto or manual S550 Mustang?
The 2018+ 10-speed auto is faster and better for daily driving. The 2015-2017 MT82 manual has known issues. The 2018+ manual is improved but the auto is still recommended.
Is the EcoBoost worth it?
Yes — 310 hp, handles better than the V8 due to lighter front end, and responds well to tuning. But it doesn't sound like a Mustang. If the V8 experience matters, save for the GT.
Squeezed is a buyer guide based on public data and industry patterns, not a mechanical inspection. Always get a professional pre-purchase inspection before you buy.