Built on the same platform as the A4 sedan, the Audi A5 comes in two-door coupe and cabriolet body styles or as a five-door model called Sportback. No matter which configuration they choose, customers can opt for a turbocharged 2.0-litre four-cylinder engine producing 261 horsepower or a turbocharged 3.0-litre V6 that delivers 349 horsepower. A twin-turbo 2.9-litre V6 with 444 horsepower lies under the hood of the mighty RS 5.