The heart of the Audi A1 clubsport quattro is a classic Audi gasoline engine a five-cylinder unit displacing 2.5 liters with turbocharging and direct fuel injection. Compared with the version used in the Audi TT RS and RS 3 Sportback on which it is based, the output of the TFSI has been increased dramatically to 370 kW (503 hp) and 660 Nm (486.79 lb-ft) of torque. Maximum power is available between 2,500 and 5,300 rpm.