Audi RS 7 Sportback, 24 mpg With 560 Horsepower

The Audi RS 7 Sportback five-door coupe uses a 560 horsepower 4.0 TFSI twin-turbo V8 engine with a cylinder on demand system that at low to medium loads and engine speeds, deactivates cylinders 2, 3, 5 and 8 by closing their valves via electromechanical actuators. The 4.0 TFSI then runs as a four-cylinder engine until the driver puts more metal to the pedal and accelerates. The engine is mated to an eight-speed tiptronic transmission which also contributes to the RS 7 achieving 24 mpg from a powerful quattro permanent all-wheel drive powertrain. The Audi RS 7 Sportback is top of the line, dishing out even more power than the all-new Audi S7 which at 420 horsepower has a starting price of $79,695.