For the first time ever, the Audi S4 Sedan (Combined fuel consumption in l/100 km: 6.2; Combined CO2 emissions in g/km: 163 – 161 g/km*) has a V6 diesel under the hood. The 3.0 TDI engine produces 255 kW (347 hp) and delivers up to 700 Nm (516.3 lb-ft) of torque to the crankshaft. An electric powered compressor provides for strong off-the-line performance; a mild hybrid system enhances efficiency. This combination of power, torque and efficiency makes the S4 unique in its segment.