No four-door has the right to be this fast, this attractive and have an interior this stunningly good. Its turbocharged V8 produces 560 hp and, because it's an Audi, that power goes to all four wheels. Rounding out the RS 7's impressive credentials are a compliant ride quality, sure-footed stability through turns and, just as with the regular A7 and S7, a hatchback configuration that provides easier cargo loading than similar coupe-styled sedans. It's a bargain Porsche Panamera Turbo with prettier skin.