Not used personally, but have heard they are okay.
VW Village
9-11 Anzac Parade Kensington
9663 3072
Drive pass every day and lots of late model VW's getting worked on.

Also this one.
Autohaus One
18 O'Riordan Street
Alexandria
6999 8699
They are more Audi bias but it is all basically the same vehicle underneath.

Good thing about these independent garages is the ratio Tech to apprentice, you tend to have someone who knows what they are working on and the problems which can arise. Also cheaper.