The 2001 Nissan Frontier saw changes on the outside, inside, and under the hood. The exterior styling was revised to look more aggressive, and leather upholstery was available for the first time. Most notably, a supercharged 210-horsepower V6 engine was made available, marking the first time a factory-installed supercharged engine was offered in a compact truck. The 2001 Frontier comes in four trims: the XE, the Desert Runner, the fully loaded SE, and the Supercharged model. The trims came in a variety of body styles, including an extended cab (KingCab), the Crew Cab, a short bed, 4WD, and a regular cab. Most Frontiers, except the Crew Cab and Supercharged, came standard with a 2.4-liter, 143-horsepower four-cylinder engine that gets about 20/24 mpg in the standard cab and 18/21 for the extended cab. The Crew Cab came standard with the 3.4-liter, 170-horsepower V6, which got 15/19 mpg and which was optional in the KingCabs. The Supercharged model came with a 3.3-liter 210-horsepower V6, getting about 15/18 mpg. Drivers are very enthusiastic about the 2001 Nissan Frontier, especially the Supercharged Crew Cab. Overall, drivers praise the truck for its reliability, good looks, and reasonable price tag. Some drivers complain about a lack of leg room and that the seats are uncomfortable, and many find the bed, especially in the Crew Cab, to be too small.