The 2001 Audi S4, part of the B5 generation, is a highly-regarded compact executive car. Originally launched in 1997, the 2001 S4 offers a 2.7L twin-turbo V6 engine that produces 250 hp and 258 lb-ft of torque, paired with a standard 6-speed manual or optional 5-speed Tiptronic automatic transmission. Audi's signature quattro all-wheel-drive system is standard, enhancing its performance capabilities. Classic in its design, the 2001 S4 features a spacious and well-appointed leather-clad interior. The car does not offer a touchscreen but comes with respectable options for its era: satellite navigation, dual-zone climate control, and Bose sound system. Safety-wise, it is equipped with antilock brakes, dual front airbags, front side airbags, and stability control. This model is often praised for its precise handling, powerful acceleration, and understated luxury feel.