I found Ash Automotive after terminating a terrible 3-year relationship with a franchise service center on El Camino Real with a well known name (thinking flaming rock). At the other place, it seemed like whenever I took in an auto for a specific repair, the technician would first look for something else wrong and always find it, and offer to fix that before doing what I came in for. I accepted this practice until a dead battery stranded my wife and kids - I had the car towed to Ash instead of the other place, and Ash informed me that my 3 year old battery was a goner and had to be replaced. Here's the kicker: the other place sold me the battery ""new"" 5 months ago.
I've since taken both of my vehicles to Ash and have been impressed with his ability to find the problem, fix it, and stop there. He listens, looks you in the eye, and delivers what he promises. He's busy, but that is a testament to his service quality.
I will never go back to the other guys, unless it is to collect on an order from small claims court.