Ithink lots of the new A6's were bought because Audi didn't update the A4 properly (B6 -> B7) so the owners didn't want an identical car, the only other thing available (on the company car list) was the A6 (which looks like a tarted up B6 anyway). What is the fuel tank capacity of an A4 Avant 1.9 TDI Quattro? – 07-01-2010, 01:08 PM. Oh Recommendedoil for brakes of Audi A4. Find out how much brake liquid does your car need. Fuel Tank Sizes; Trunk Space; Towing Capacity; Steering Wheel Size; Seating Capacity; Auto Parts. Filters; Brakes; Bulbs; Coolers and Radiators; A4 B7 (2005-2009) Engine: Capacity: Change interval: Oil type: A4 2.0 T (147 kW) 1 L: Check 5000 miles TheAudi A4 2.0 TDI has a 6-speed manual transmission. The top gear ratio is 0.66:1. 3.56:1 is its final drive ratio. The combined fuel consumption of this automobile is 5.78 l/100 km, the urban fuel consumption is 7.91 l/100 km and the extra urban is 4.55 l/100 km. The fuel tank's capacity is 70.00 l. The rating of CO 2 emissions is 154 g/km Itis part of Audi's B7 model series. Powering the Audi A4 2.0 TDI quattro is a double overhead camshaft, 2 litre turbocharged 4 cylinder powerplant, with 4 valves per cylinder that provides power and torque figures of 138 bhp (140 PS/103 kW) at 4000 rpm and 320 N·m (236 lb·ft/32.6 kgm) at 1750-2500 rpm respectively. fuel tank capacity FuelTank Capacity : 21.1 gallons 80 L 17.6 UK gallons: CO2 emissions : 212 g/km (Audi) Audi A6 (C6) 3.0 TDI V6 225HP Quattro Safety Ratings : Euro NCAP Audi A4 (B7) 3.0 TDI V6 Quattro (2004) Audi A6 (C6) Avant 3.0 TDI 240HP Quattro tiptronic DPF (2008) Technicalspecs and performance data for the Audi A4 2.0 TDI 140 B7 (2005-2007) Technical specifications for the 2005-2007 Audi A4 2.0 TDI 140 (B7) 4 door saloon. Find & compare performance, practicality, chassis, brakes, top speed, acceleration, suspension, engine, weights, luggage & more. Fuel Tank Capacity 70 Litres 15.4 138BHP  49.6 mpg  4 Doors  5 Seats  460 L kg 1,430 kg Front - FWD Jump To: All Specs  Rankings vs Rivals Similar Cars  Successor Other B6 / Searchfor new & used Audi A4 B7 cars for sale or order in Australia. Read Audi A4 B7 car reviews and compare Audi A4 B7 prices and features at carsales.com.au. Fuel / Electric Fuel / Electric. Fuel Type Diesel (8) Petrol (38) Transmission Transmission. Transmission Manual (2 2008 Audi A4 TDI Auto. $11,000* Excl. Govt. Charges 103,000 Iam driving a Audi A4 tdi 2.0 B7, 2005 model. When driving the vehicle as from pull away it does not boost then after a - Answered by a verified Audi Mechanic normally effect how the cars runs as its just used for monitoring so I'd check other avenues 1st This could be a lack of fuel pressure from the electrical pump at the tank. AudiA4 (B7) Avant 2.0 TDI 170HP DPF Fuel Consumption (Economy), Emissions and Range. Fuel Consumption - Economy - Combined: Fuel Consumption - Economy - City: 30 MPG 7.9 L/100 km 36 MPG UK: Range : 750 miles / 1206 km: Fuel Tank Capacity : 18.5 gallons 70 L 15.4 UK gallons: CO2 emissions : 154 g/km (Audi) Audi A4 (B7) Avant 2.0 L1Ov.