Fuel tank capacity is 73 liters. Consumption in city is 5,9 lt/100km, consumption in highway is 4,6 lt/100km and combined fuel consumption is 5,1 lt/100km according to official factory data. Estimated A6 Limousine 3.0 TDI V6 clean diesel real World MPG/consumption is 8,4 lt/100km. It is expected to consume 65 percent more fuel than factory data The big news for the 2014 Audi A7 is the addition of a diesel engine model and a new, high-performance RS 7, the most powerful RS model ever offered in the U.S. EPA city/highway fuel economy Choose any Audi model. Ads A1 A2 A3 A4 A5 A6 A6 e-tron A7 A8 Cabriolet e-tron e-tron GT nanuk quattro concept PB18 Q2 Q3 Q4 e-tron Q5 Q7 Q8 Q8 e-tron R8 RS 3 RS 4 RS 5 RS 6 RS 7 RS e-tron GT RS Q3 RS Q8 S1 S3 S4 S5 S6 S7 S8 SQ2 SQ5 SQ7 SQ8 SQ8 e-tron TT 9Z79.