The most efficient engine in the new A6 is the redeveloped 2.0 TDI. This four-cylinder unit develops 130 kW (177 hp). Its 380 Nm (280.27 lb-ft) of torque stand at the ready between 1,750 and 2,500 rpm. In conjunction with a manual transmission, it propels the Audi A6 from zero to 100 km/h (62.14 mph) in 8.7 seconds, then on to a top speed of 228 km/h (141.67 mph). In the EU cycle, it requires just 4.9 liters per 100 km (48.00 US mpg) and emits only 129 g CO2 per km (207.61 g/mile). That is a 13 percent decrease in fuel consumption.
