Q: I just bought Audi A6 Avant 1.9 TDI made in 2004. But fuel consumption is much higher than that in document. Maybe I have a bad gear changing behaviour. I normally change gear at 2000-2500 rpm. that is to say, to 2nd gear at 15 mph, 3rd one at 25mph, 4th one at 40mph, 5th one at 60mph. Shall I change gear earlier? how to achieve a balance between fuel economics and engine maintenance? Thanks a lot.
A: You are shifting at the right speeds/rpm. Keep this in mind the documented fuel mileage is an estimate, therefore it will vary. The car is 4 years old, however you may want to replace the air filter, and the fuel filter and see if that helps.