Cheers I bought another 5 litres and will top up when needed,was worried it was burning too much oil but the manual says 1 litre in 1000 miles is expected!
The high oil consumption of some Mk5 GTI FSI engines is a well known problem. If you do a Google search you'll get loads of hits. The Americans even managed to get a recall out of it.
My wife's 07 Model GTI uses just over one litre every 1000 miles. I first bought the car in 2011 and I was totally freaked out by it. I was sure the guy who sold it to me had ripped me off. I did loads of research and quickly found out how common an issue it is with these cars.
I replaced the PCV valve in an attempt to improve it. No luck.
We've driven the car for 25K miles now. I just check it religiously every two weeks with a reminder on my phone. It always uses some oil. Pretty much always in line with the mileage driven in the preceding two weeks.
I think it's totally disingenuous of VW to say it's "normal" for the engine to consume 1ltr per 1k miles. Following that logic it would be normal to give the car 12 litres of oil between services, 12 litres of oil annually, 2 or 3 litres on a drive to the continent. Etc, etc. What a load of crap.
There is a problem with some of the FSI engines in that they burn an unacceptable amount of oil. End of.
There are loads of theories as to why. You'll find them all on Google. My favourite is poor bedding in of the piston rings during the running in period of the engine as I've tried all the other common "solutions" to no avail.
I was so cross and worried about it when I first bought the car I wanted to sell it. However, four years and 25,000 miles later I still adore the car! As long as it's regularly topped, up the oil thing seems to be a non issue.
One word of warning, a friend of mine who drives an Audi with the same engine fitted, drove his briefly with the oil light on and killed his engine stone dead. I never, ever wait for the light. I always check it every two weeks or sooner depending on mileage.
Anyways....rant over....
Moral of the story is. Keep her topped up and all will be well