The 2020 Audi S4 is a five-passenger luxury sport sedan that’s the high-performance variant of the A4 sedan. It’s offered in 3 trims — Premium, Premium Plus and Prestige — together with every spec adding increasing degrees of technology and luxury attributes. All versions include a strong, turbocharged 3.0-liter V6 (349 horsepower, 369 pound-feet of torque). All-wheel drive is standard, as is a eight-speed automated transmission.