In a sea of performance SUVs like the BMW X5 M, the Audi RS6’s rakish profile, hunkered-down stance, and supercar driving character are rare and special. Powered by a 591-horsepower twin-turbocharged V-8, this station wagon is a performance beast, shooting to 60 mph in just 3.1 seconds and capable of a 190 mph top speed. That’ll make Costco runs a lot more interesting. At the same time, the long-roof body style can comfortably seat five while carrying nearly as much cargo as chunkier, less athletic SUVs. And though the RS6 leans heavily towards sporty driving, the interior features a classy design, sumptuous materials, and all of the latest technology. Along with the high-riding performance SUVs, the RS6 Avant does battle with other pricey performance wagons like the Porsche Panamera Turbo S Sport Turismo. If you dig the RS6 Avant’s performance credentials but want a sleeker, less family-oriented look, Audi also offers the mechanically identical RS7 hatchback.