clunking from under front when cornering on uneven surfaces on a vw?

most likely the anti roll bar the cv joint would make a clicking sound even on level roads when turning.

First check the CV joints. They're generally found towards the engine end of the rods between the engine and front wheels.

They're normally covered by a rubber surround. Have a look and see if one of those rubber covers is split - it's a common fault.

Dirt getting inside the joint may be causing the problem.

I used to work for VW and so heard of some of the problems with the Mk 4, one person complained about a similar noise and it turned out it was the electric window mechanism. Not sure if this helps but there were a lot of faults with them which can be rectified by your nearest dealer if it is indeed a manufacturing error.

my mate had the same problem have the c.v. joints checked and the boots for wear and leakages they may need replacing get a haynes manual for the car a set of spaners and sockets and follow the instructions either that or a garage.

Sounds like a roll bar, strut or linkage. Could be a very simple solution and quite cheap to fix.

Roll bar linkage gone I should think

Anti roll bar problem I should think, cheap to fix, you could get any mechanic to do it.

Sounds like a CV joint is on it's way out.

could be an engine mounting

anti-roll bar problem, get it sorted.