I've had a 2006 B7 for around 5 months now, 80k on the clock, but it's now been sat on my drive for 2 weeks as I have (probably) major problems.
The car has always burnt a bit of oil since I got it - around a litre every 1000 miles. I topped it a few days before driving to London (260 miles) away. But driving through London, my oil level light came on, I was only about a mile from my mate's house so was going to top up there, but only 30 seconds later, I started getting a bad ticking/rattling sound. Pulled over, topped up with oil - around 1.2l took it back upto max. Started the car again, hoping this would have solved it, but the damage must have already been done.
I wasn't driving it hard, just idling through traffic. The oil light has came on a couple times before (how I realised it was burning oil) but was always topped up within a few miles of driving carefully.
Since then, a few months, I always keep a close eye on it, so it never gets to minimum.
There was no oil pressure warning, no signs of oil being spilled onto the floor. I'd describe the noise as a loud tick/rattle, like something catching as it turns, matching the RPM. The engine didn't seem to be struggling, not misfiring etc.
Ended up getting the AA out, who towed me back to Darlington (only took 5 hours of waiting, and 11 hours on the back of a recovery truck

The AA guy told me he thought it was top end damage from bust bearings - but aren't bearings bottom end?
Was advised by a Audi specialist to let it run for 2-3 minutes to see if the lifters were just starved of oil. Did this, but there was no change.
Obviously not seeing the car, it's just a guess, but anyone have an best guesses what they think it could be?
I'm trying to find a local specialist in the Teesside area to have a look at it sometime soon, but am preparing myself for the worst

Have talked to Vasstech in Darlington, but have heard mixed things about them. Anyone had any experience with them.
James.