The 2012 Audi A8 family grows by one with the introduction of a new W12 engine. The newly engineered, 6.3-liter W-12 powerplant produces 500 hp and is mated to an eight-speed automatic transmission.

The first S7 debuted for the 2013 model year, and the current second-generation car is all-new for 2020. The Audi S7 combines performance and practicality with aplomb. A punchy engine up front ...