Hi,

I was going to buy a Merc C class Avantgarde CDI 2005/6. But have since reconsidered. I am now looking at A4 TFSI or a Golf GTI MK5. I seem to come across a lot of sites saying to use the high octane fuel - which i wont use when i get one.

Are there any faults to look for? as its a VW i expect there will be quite a few? and what is the true MPG? My petrol megane returns 43mpg, whereas Golf TDI's that ive used only return about 39-40 mpg which is a lot less than the official figures? GTI suffer similar?

Any ideas?

M