I got my S3 last week (2001 210BHP AMK) and i'm loving it apart from a slight problem when accelerating, it doesn't always happen, but sometimes it has a bit of a hesitation- almost a bit 'jumpy' and i've only really noticed it mainly in 2nd gear and a couple of times in 3rd. It always seems to be just over 2000rpm it happens if that helps?!
One of my mates said it could be the MAF and i just wandered if this is indeed the most likely cause.
I bought the car from a local garage so this should be covered under warranty, just wanted to hear what you guys thought.