As in the Coupe, the highrevving, naturallyaspirated 4.2litre V8 that is hand built for the Audi RS 5 delivers 450PS at 8,250 rpm and peak torque of 430 Nm at between 4,000 and 6,000 rpm. It powers the Cabriolet from rest to 62mph in 4.9 seconds, and where possible can take it to an electronicallylimited 155mph top speed, which at extra cost can be elevated to 174mph if desired.