For 2024, Audi decided to crank the dial, adding a new Performance model that promises a ludicrous 621 ponies. The new variant also weighs less, so acceleration should prove sufficiently brutal. And yet, the RS6 Avant’s search for more power changes nothing about its impressive practicality, comfortably seating five in an interior replete with rich materials and plenty of trendy technology. There’s plenty of space to store cargo behind the power rear liftgate, too.