For the first time, the Audi S5 Coupé/Sportback has a V6 diesel under the hood. The 3.0 TDI engine in the S5 Coupé and the S5 Sportback produces 255 kW (347 hp) and delivers up to 700 N·m (516.3 lb-ft) of torque between 2,500 and 3,100 rpm. An electric powered compressor provides for strong off-the-line performance; a 48V mild hybrid system (MHEV) enhances efficiency. The 3.0 TDI in the S5 models is the most powerful version in the Audi V6 diesel engine lineup. Despite significantly greater performance, NEDC consumption derived from the WLTP values for the S5 Coupé TDI and the S5 Sportback TDI is just 6.2 liters of diesel per 100 kilometers (37.9 mpg US), a CO2 equivalent of 161 grams per kilometer (259.1 g/mi). The new S models consume on average 19% less fuel than their predecessors with gasoline engines despite producing significantly more torque. The six-cylinder diesel engine accelerates the S5 Coupé in 4.8 seconds and the S5 Sportback in 4.9 seconds from 0 to 100 km/h. The electronically limited top speed is 250 km/h (155.3 mph). With these characteristics, the V6 diesel engine delivers agility, spontaneity, low fuel consumption and long range. It also has a sporty sound ...