I've had my Teg for over eight years now and it's been to a few garages for various bits. But to be honest I like to do the work myself. I always feel disappointed when I leave a 'well known' garage because something wasn't done right and I have to go back. Something simple takes twice as long. The garage is over two hours away. Double booked or left waiting to see when your car will be ready.
I've lost a lot of faith in the garages I have used. And now wouldn't recommend them.
I understand that running a business is hard, but first and foremost with me is telling the truth. If your too busy to do it then say so! Don't try and 'squeeze me in' when it could hinder me and someone else or cause a rush job.
Second is car care not customer care. I love my car, people on here know that. What I hate is garages not treating it with respect. I don't mean ragging it around McDonald's car park when my back is turned. But always putting in a seat cover, using gloves, using wing protectors, not leaving bolts or parts out... maybe a quick wash afterwards. Treat it as your own car.
Thirdly would be customer care and affordability. I would pay top notch if a garage done all these things. I don't expect it all but it's a nice surprise if you do.
There's a garage I've been wanting to try in Oxford that are renowned for their work. But that might wait for the new venture...