E.g. I had to have a side-panel respray (black metallic, another famous German brand) under insurance. Choice was to go
a) with the insurer (Norwich Union)-nominated bodyshop and have no paperwork involvement including the courtesy car (just needed to pay the excess) or
b) via the main dealer, get a quote, approval and various hassles and I did not even ask about the courtesy car...
I chose (a) especially when I discovered that the insurer's bodyshop was one of two in the area used as contractor by the main dealer.
No hassle, no fuss, satisfactory job.
DAS
For direct contact replace nospam with schmetterling