Based on the A6 sedan, the Audi A7 Sportback comes in a five-door, fastback-style configuration. Besides the standard four-cylinder in the A6, engine selection is the same with a pair of V6 engines and a supremely powerful V8 in the high-performance RS 7. Blessed with a rear hatch, the A7 Sportback offers more cargo space than the A6, but not as much as an A6 wagon. Like most Audis, this one is known for having a world-class interior.