The Audi S5 Sportback is a four-door performance version of Audi's A5 coupe. It is powered by a turbocharged V6 engine that produces 349 horsepower and 369 foot-pounds of torque. The S5 Sportback also features Quattro all-wheel drive, an eight-speed automatic transmission, and an adaptive suspension system. Inside, the S5 Sportback has luxury amenities such as leather seating and a 14-speaker Bang & Olufsen audio system.