Acura's RDX made its debut in the compact luxury SUV segment for 2007. The 2008 Acura RDX is a four-door, five-passenger luxury SUV. It is available in two trims, the 5-Spd AT and the 5-Spd AT with Technology Package. They remain unchanged following the 2007 introduction. The turbo-charged engine makes the RDX an exciting vehicle to drive, going from zero to 60 mph in 6 seconds. Fuel efficiency is 17 miles per gallon in the city and 22 mpg on the highway.