The heart of the B5 S4 is its "biturbo" engine, which delivers smooth, linear power that feels modern even decades later.
While the B5 S4 is fast, critics often describe its stock handling as "clinical" or "inert" compared to more spirited rivals like the BMW M3. Audi S4 (B5) | The Brave Pill - PistonHeads UK AUDI S4 B5 V2.3 1.45
Originally rated at 250–261 hp, depending on the market. The heart of the B5 S4 is its