Im from Halifax, your best off going to FAR Servicing in Bradford - Its next door to F.A.Roper Ltd, They deal with German Cars only, FAR Servicing is the garage on the side of the building, ask for the manager Charlie, - Below is the website link for the Car garage next door it give you an idea of the cars they have there.
The prices are really good and cheap, (not like Audi @ £105.00 per Hour)
See ya
F.A.R Servicing
Woodside Rd, Bradford, West Yorkshire BD12 8AP
Tel: 01274 674141
http://www.dealer.autotrader.co.uk/_roperframe2.htm
F A ROPER ltd
Woodside Road
Bradford
WEST YORKSHIRE
BD12 8AP
Cheers