The 2021 Audi S4 Sedan is a high-performance variant of the A4 sedan. Powered by a 3.0L turbocharged V6 engine, it produces 349 horsepower and 369 lb-ft of torque. With an 8-speed automatic transmission and Quattro all-wheel drive, the S4 goes from 0-60mph in 4.4 seconds. Features include sport-tuned suspension, 18-inch wheels, and a luxurious interior with premium leather and tech amenities. With its blend of performance, comfort, and style, the S4 is a compelling choice in the compact luxury sedan market.