A friend recommended them to me. Super helpful and high quality work at a fairly cheap price.
When my car wasn't going to pass inspection, they picked me up at home and didn't charge me.
When my housemate needed a new starter, they apologized that they couldn't finish the work the same day we brought it in (without an appointment) because they needed to order the part. It was done by lunch the next day.
I recommend Walters to anyone with a car in Pittsburgh!