Under the hood Audi placed a turbocharged 2.5-liter engine with direct gasoline injection that produces 340 bhp and 330 lb.-ft. of torque. The TT RS Coupé makes the 0 to 100 km/h sprint (0 to 62 mph) in 4.6 seconds, and the Roadster needs a tenth of a second longer. Top speed is limited to 250 km/h (155 mph), but Audi offers an option to raise the limit to 280 km/h
(174 mph).The five-cylinder unit marks Audi’s return to the odd numbered engine. This is important for Audi because it’s had a long tradition of five-cylinders in performance cars.