.
I actually do tip my mechanic - the electrician - our postal lady - the garbage guy - even the tree crew when we have storm damage. It isn't a percentage of the bill, but it will be enough to easily cover lunch and a couple of beers. They have given us a lot of personalized service as a result. I think that works to both our benefit.Spent 25 years as a auto mechanic working on a shop rate commision, no tips, never expected any.