The Volvo XC90 is a mid-size luxury crossover SUV produced by Volvo Cars since it was unveiled at the Detroit Motor Show 2002. It is based on the P2 platform, shared with the first generation Volvo S80 and other large Volvo cars. As Volvo's top-selling vehicle in the United States,the XC90 is also Volvo's best selling model worldwide with 85,994 cars sold in 2005.
At its launch as a 2003 model, it was presented with a choice of two models, the 2.5T and the T6. The 2.5T was the entry level version and offered a 2.5L 20 valve turbocharged inline 5 engine putting out 205 hp (153 kW/208 PS) and 236 ft·lbf (320 N·m) mated to an Aisin co-developed AW55-50/51 5 speed automatic. The T6 offered a 2.9L 24 valve twin turbocharged inline 6 with 268 hp (200 kW/272 PS) and 280 ft·lbf (380 N·m) mated to a GM-sourced, Volvo modified 4T65EV/GT 4 speed automatic. While the 2.5T came standard with front wheel drive, a Haldex Traction all wheel drive system was optional. The T6 was offered only with the AWD system.