I am currently looking for a used A6 avant (due to impending enlargemant of family) and was wondering what the engines were like. We currently have an A3 1.8T (which we will keep) and the engine is great (even at 128000 miles!) but does it suffer in the bigger car. I like the sound of the 2.8 V6 but would like to keep the fuel consumpion down to a reasonable level. Have a budget of approx £7000 and whatever the engine would prefer a quattro. Any pointers would be great, Ta.