I've been taking my car to Greg's on Stewart St., next to the Freeway for more than 4 years. I started using them when I was driving an Isuzu Trooper. They seemed to be honest and fair enough in their pricing. Over time I got to know the people there and to rely on them for assessments of my car's condition...what I could put off and what needed to be done now.
When it came time to sell the Trooper I brought them a used Toyota Land Cruiser I was eying. With their clean bill of health, I purchased it and have been very pleased with the car.
I thought maybe I would try out the Toyota dealer for service. No actual repairs have been necessary in the two years I've had the Toyota.
While I found the service department to be efficient and helpful, I always felt like I'd been slimed by the time I paid my bill.
So recently I switched back to Greg's. Though there have been some personnel changes, the staff is still just as helpful and (seemingly) trustworthy.
(Don't know why I felt compelled to couch that with parentheses. But who can ever completely trust car repair guys?)
Anyway...Greg's on Stewart. There are other Greg's locations, but this is my favorite.
Addendum: Just had a major service (100K) and the front brakes redone, rotors and all. While it wasn't cheap, Ken (at Greg's) bent over backwards to help explain in detail what needed to be done beforehand as well as suggesting I go to their web site and print out a discount coupon before picking up my car.
Still tops in my book.