The all-new 2013 Audi RS 5 Cabriolet with a 450 horsepower naturally aspirated 4.2 liter V8 engine starts at $77,900 next month with an EPA estimated 16 city / 22 highway/ 18 combined and no gas guzzler tax. The RS 5 Cabriolet will have an optional ceramic brakes for the front rotors, a standalone package priced at $6,000.
