The Audi A6 is powered by a 2-liter TFSI engine under its hood. This engine is designed to deliver a robust performance with 245 horsepower and 370 Newton-meters of torque. It's paired with a sophisticated 7-speed dual clutch transmission, which ensures smooth and efficient power delivery to the wheels. This combination provides a balanced blend of power and responsiveness, making the Audi A6 a capable and enjoyable car to drive.