Audi S4 B5 V2.3 1.45 May 2026

Originally rated at 250–261 hp, depending on the market.

It is a "super sedan" in the aftermarket; simple Stage 1 tunes can push output toward 300 hp, while Stage 3 builds with K04 turbos frequently exceed 450–500 hp.

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