my old man says my car is smoking, he thinks its buring oil (i aint seen any smoke so i can't comment on the colour of the said smoke)
i had a quick search around online for a bit more info about the A3, does this sound right ?
i tend to agree, valve stem seals & oil & filter change.
however has your car lost power & become hard to start, ie turning over a long time on starter before engine starting,if so then it could well be piston rings.as for the most econ solution, i'm afraid i can't help as i've had no connection with audi expenses. hope i've helped in some way, best of luck, regards
my car shoundn't need a oil change as i had a new sump, new oil and filter done about 3 weeks ago.