History
The B5 S4 had a 2.7 litre (2671 cc) twin-turbo-charged (biturbo) 90° third-generation cast iron V6 engine with two light-alloy cylinder heads, 5 valves per cylinder,[5][6] twin double overhead camshafts and variable valve timing with two side-mounted intercoolers, producing 195 kW (261 bhp) and 400 N·m.
S4 is only available with Audi's quattro four-wheel drive (4WD) system, with the S4 utilising the Torsen-based permanent full-time 4WD. The S4 has a high-performance suspension systems which are not shared with the remainder of the A4 range.
