The 1991 Ford Mustang appeared during a time when American consumer interest in pony cars--sports-oriented vehicles with tremendous driving power--was at an all-time low. The least powerful trim for 1991 was the base LX, which had the four-cylinder in-line engine as opposed to the V-8 of the other trims. It was available in coupe, sedan and convertible body styles.
Engine Output and Fuel Economy
The four-cylinder engine of the 1991 Ford Mustang produced 105 horses--up from 90 horses from the previous model year. The 4-cylinder Mustang--equipped with a standard five-speed manual gearbox--got 22 miles per gallon for city driving and 30 mpg for highway driving.
LX vs. LX 5.0L
There was a spruced-up version of the LX dubbed the "LX 5.0L." This was in reference to its engine's 5-liter capacity. Although it shared the same turning radius at 37 feet with the regular LX, its engine was a V-8 and generated more than twice the amount of horsepower.
LX vs. GT
Most automotive journalists ignored the relatively anemic four-cylinder engine-equipped vehicles, considering that the focus of the Ford Mustang was on performance. Most attention was showered on the GT trim, which had the same 5-liter 225-horsepower V-8 engine as the LX 5.0L. It could go from 0 to 60 miles per hour in 7.2 seconds and race through the quarter mile in 15.6 seconds.
Still, general consumer response to the 1991 Ford Mustang was lukewarm, and the Ford Motor Company was considering halting production of its iconic vehicle until it succeeded in revamping it by the late-'90s. Ironically, for all the attention showered upon its more powerful siblings, the '91 Mustang LX actually had better gas mileage; the other trims could only manage a fuel economy 17/24 mpg.
The original manufacturer's suggested retail prices of the LX coupe, LX hatchback and LX convertible were $10,215, $10,721 and $16,280, respectively. As of May 2010, Kelley Blue Book estimates the price range value of the four-cylinder engine-equipped Mustangs at around $2,500 to $5,000.
- Photo Credit Jupiterimages/Comstock/Getty Images
4.6 Ford Performance
Introduced in the 1991 Lincoln Town Car, the 4.6-liter, Ford V8 engine has appeared in a variety of applications, including vans, sedans...
4.0L Mustang Performance
Ford unveiled the fifth generation of Mustang in 2005, and with it came the 4.0-liter V-6, which was a strong engine for...
How to Change the Brake Master Cylinder on a Ford Mustang
One of the most important parts of changing the brake master cylinder on your Ford Mustang is not successfully replacing the part...
How to Build Performance in Four Cylinder Engines
Building a performance four cylinder engine is much more difficult than building a six or eight cylinder engine because of displacement. Bigger...
How to Get More Horsepower From My Ford 2.3-Litre 4-Cylinder Engine
While economical 4-cylinder engines are generally associated with foreign vehicle manufacturers, Ford has a history of producing 4-cylinder engines that are quite...
Information on a Ford 2.3-Liter 4-Cylinder Engine
The Ford 2.3-liter in-line four-cylinder engine, commonly called the Lima engine because Ford manufactured it in Lima, Ohio, belongs to the 2.0-,...