The 2019 Audi S4 is a five-passenger luxury sport sedan that is the high-performance version of the A4 sedan. It is available in three trims — Premium, Premium Plus and Prestige — with each trim adding increasing levels of luxury and technology features. All models come with a powerful, turbocharged 3.0-liter V6 (349 horsepower, 369 pound-feet of torque). All-wheel drive is standard, as is an eight-speed automatic transmission. The Premium model is new for 2019 and comes with 18-inch wheels with summer performance tires, automatic LED headlights, heated side mirrors, sunroof, tri-zone automatic climate control, 12-way power front seats with heating and massage functions, 40/20/40-split folding rear seats, an auto-dimming rearview and interior ambient lighting.