The Jeep Grand Cherokee first hit the scene in 1993 as an attempted replacement of the Cherokee. Now in its third generation, the Grand Cherokee continues to be one of the more popular vehicles in Jeep lineup (second to the Wrangler). Although luxury and comfort are plentiful in the new Grand Cherokee, its off-road capabilities have never been better. Unlike the rest of the Jeep lineup, the Grand Cherokee SRT8 was never intended to go off road. Instead, the SRT8 boasts a 420-horsepower, 6.1-liter Hemi® V-8 that makes it one of the fastest and best handling SUVs on the market. The Jeep Grand Cherokee comes with a lifetime powertrain warranty and gets an estimated 20-21 mpg on the highway.