(February 23, 2017) With enhanced performance and benchmark technologies, combined with a more dynamic design, the all-new 2018 Audi S4 offers customers versatility, with seating for up to four and the quickness and competence that is expected from Audi S models. New for 2018, the S4 features a 3.0-liter TFSI V6 that has been reengineered to provide more horsepower and torque and a quicker buildup of peak output. With the same 2,995 cc of displacement as the previous engine, power has increased by 21 horsepower to 354, and by 44 lb-ft of torque, up to 369 lb-ft.