I have a garage that I trust, and I work there now. (Apparently, when you spend enough money at a garage, they offer you a job!) We have heard some serious horror stories about Jiffy Lube and other chains, and dealerships. A lot of those unhappy customers end up at our garage.
I had a tire place try to tell me that 'the last guy who changed your tire cross-threaded the nut, so the bolts have to be replaced.' I changed the tire myself. By hand. I'm strong, but I'm not *that* strong. They replaced the bolts, free of charge.
One of my friends had her oil changed at Jiffy Lube, and her car burned up. Jiffy Lube refuses to take responsibility for their mistake. She's still fighting with them, and she has no car. And no money.
One of our garage's customers was *yelled* at by her oil change place, about her brakes being so bad that they were dangerous to drive, but when they found out she had no money, they changed their tune and said, 'come back when you have the $1500'. She came to our garage. Her brakes and rotors were fine. The noise in her wheel was a pebble in the hubcap. TRUE STORY. I can't make this stuff up. That's how she, and her family, and everybody she talks to, is now one of our customers.
So we tell everyone in general to avoid dealerships and chains. It's so hard to find a trustworthy garage. I feel so fortunate that I found mine. I may never move away.