Hi, New here. Big fan of audiâs and have the option to buy my company car Audi 08 B8 1.8TFSI SE saloon for the same money as an 05/55 B7 3.0TDIQ Avant. Company B8 has the MMI fitted (which is great), reverse parking sensors and no other options. Car has done 80,000 miles has FASH and has returned about 33mpg during its lifecycle. Alternative option is 100,000+ base model B7 3.0TDIQ (i.e. not even SE) with a couple of options. TDI is more economical even when diesel fuel costs are taken into account â although hardly anything in it. Love the idea of 4x4 and like the space of the avant but the B8 is newer and the cabin is much nicer IMO. Current B8 is a very early model and has the new chain driven cam 1.8T 160bhp engine which is unknown in the long run. 3.0tdi engine appears to be almost bomb proof with lots of reports of 200,000+ miles. After a car to keep for a long time. Which would you go for?