Mine's 33k, with 7 vw stamps, on 05 plate. It does rattle at tickover, but only when warm, rather than straight from cold. Suspect it's the cam follower or chain tensioner, but disappears above tickover revs
A few years back, we had a 19k polo, that the previuos owner, Mrs x had only used to go to sainsbuy's in, but that sounded like a proper diesel - ended up being piston slap / crankshaft knock and needing a new engine, under vw warranty.That was a lucky escape. Ran like a treat with the new engine though - everything else was like brand new