I have an A4 2,8 q year 2000 model, its uses a bit of oil. There are no leaks I can see , I park in the same place at work and on a drive way at home and on oil left on the ground at all. It does not smoke at all and has only done 109,000 miles with full Audi service history. Is this oil consumption normal? I use Mobile 1 Fully Synthetic Oil 0W-40 as this is what the Audi dealership told me to use. It uses about 1L for every 1000 miles.