Fuel Economy of the 2022 Audi A6 Allroad quattro. Compare the gas mileage and greenhouse gas emissions of the 2022 Audi A6 Allroad quattro side-by-side with other cars and trucks What engine is in Audi A6 (C7) 2.8 FSI? The Audi A6 (C7) 2.8 FSI has a V 6, Petrol engine with 2773 cm3 / 169.2 cu-in capacity. How many horsepower (hp) does a 2012 Audi A6 (C7) 2.8 FSI have? The 2012 Audi A6 (C7) 2.8 FSI has 204 PS / 201 bhp / 150 kW. How much does a Audi A6 (C7) 2.8 FSI weighs? The Audi A6 (C7) 2.8 FSI weighs 1645 Kg / 3627 lbs. Audi Q7 II 3.0 TDI 272HP 7 seats Fuel Consumption (Economy), Emissions and Range Audi A4 (B7) RS4 Avant 4.2 FSI V8 Quattro (2006) vs Audi A6 (C6) Avant 3.0 TDI Fuel consumption (economy) - urban : 10.2 l/100 km 23.06 US mpg 27.69 UK mpg 9.8 km/l: Fuel consumption (economy) - extra urban: 5.9 l/100 km 39.87 US mpg 47.88 UK mpg 16.95 km/l: Fuel consumption (economy) - combined: 7.5 l/100 km 31.36 US mpg 37.66 UK mpg 13.33 km/l: CO 2 emissions: 174 g/km : Fuel Type : Petrol (Gasoline) Acceleration 0 e5jTDQ9.