Unbridled power lurking in a classically elegant coupe: the Audi RS 5 will debut at the Geneva Auto Show. The high-revving 4.2-liter V8 with its 331 kW (450 hp) unleashes powerful performance while achieving remarkable fuel economy. The seven-speed S tronic and an innovative center differential in the quattro drivetrain transmit power to all four wheels. Developed by quattro GmbH, the RS models comprise the dynamic spearhead of Audi's model range. The RS 5 is the...