Minor refinements grace the Mustang models for the year 1991. Convertibles get a tighter boot for their automatic tops, while new star-shaped 16-inch wheels are optional on both GT and LX Mustangs. The 4-cylinder engine is updated with electronic ignition, and horsepower jumps from 88 to 105bhp. Also, a driver’s side airbag is added.
This is getting boring to say but there are really no major changes to the Mustang again this year. Increases in pricing, a few choices in wheels and trim. Floor mats and a cargo tie down option. Blah, blah blah.
About the most exciting change was that the entry-level Mustangs received some much needed engine improvements for 1991. The 2.3 liter four cylinder got new twin-plug cylinder head and distributor-less ignition which increase power from 88 horsepower to 105 horsepower. The big reason to make the improvements was more for emission reduction than getting more power, but hey we will take it.
Other changes in 1991 included new five-spoke 16-inch cast aluminum wheels that replaced the 15 inch wheels of previous years for all the V8 powered cars. Convertible cars now had a power top that folded closer to the body for a neater appearance, and automatic-transmission cars met yet another new federal edict by adding an interlock that required pushing the brake pedal before the shifter would move out of Park.
LX 5.0s switched from rough-riding Goodyear Eagle GT+4 tires to more compliant 225/55ZR16 all-season Michelins. GTs retained the unidirectional Goodyears in that same size but offered the Michelins as a no-cost alternative.
Special Edition Models & Variants
The 1991 Mustang GT received the same new 5 spoke, 16 inch, aluminum wheels as the 1991 5.0 LX. The GT (like the LX) convertible also received the new convertible top. Specific for the 1991 GT was the 1990 GT carryover items such as solid grille with center mounted Ford emblem; front, side and rear aerodynamic body skirts with integrated fog lamps; and 225hp, 5.0L, High Output, V8 engine.
sales continued to fall in 1991 with only 98,737 Mustangs sold. For context, this was the first time ever that the Mustang failed to sell more than 100,000 units in a year. To dive into the model and body splits as well as see charts and percentages, check out our 1991 Ford Mustang Production & Sales Numbers deep dive.
% of Total
2 Door - Hardtop LX
3 Door - Hatchback LX & GT
2 Door - Convertible LX & GT
Options and Pricing
The base prices kept going up despite no changes to the cars in 1991. 1991 saw the base Mustang cross the $10,000 mark for the first time, though a V8 convertible could be had for less than $20,000. For more detailed options and pricing, please check out our 1991 pricing and options research.
2 Door Hardtop
2 Door Hatchback
2 Door Convertible
Exterior & Interior Colors
A total of 13 colors were available for the 1991 Mustang model year. The colors were darker and less bright versus the 1980s. Lots of blue and black hues as well as dark reds in 1991. For detailed colors, color palettes, codes and interior colors please check out our in depth 1991 colors information post.
Dimensions & Weight
The 1991 Mustang had the exact same dimensions and weight as the prior year model.
Body Length - Notchback/Hatchback
Wheelbase - Notchback/Hatchback
Trunk Capacity - Hatchback
Trunk Capacity - Notchback
The engine options were unchanged for 1991 but there were some needed updates to the core engines themselves. The 4-cylinder engine was updated with electronic ignition, and horsepower jumped from 88 to 105 bhp. The hard-charging 5.0-litre H.O. V8 was still a nice 225-horsepower and 300 pound-feet respectively. For more information on engines for 1991, you can find the information here.
Engine Name & Year
Power (hp @ RPM)
Torque (lb/ft @ RPM)
1991 – 140 Lima Inline 4 Engine (2.3 L)
105 hp @ 4600 RPM
135 lb/ft @ 2600 RPM
1991 – 302 H.O V8 (5.0 L)
225 hp @ 4200 RPM
300 lb/ft @ 3200 RPM
Below is the performance data for the 1991 Mustangs that we could find. We have seen some sites states different times but since the GT was unchanged from prior years it makes no sense that the performance numbers changed. The 1991 Mustang was still a competitive performer given its price. Below we have included 0-60 mph times, 0-100 mph times as well as quarter mile times and top speed where available.