My car is due for a Cambelt change and MOT. I got a quote of Â£399 + Â£54 from my local Audi Dealer and a quote of Â£288 + Â£39 from a good local garage. Is it worth spending the extra Â£126 for Audi servicing? The car has mixed service history most of which has been done by an Audi specialist by the previous owner. I recently had the brakes done by Audi under their fixed pricing scheme. Any thoughts?