If you are taking your car to a shop for a driveability issue..It should have some gas in it.
we charge 10 bucks a gallon when we have to gas your car for you.
Back in the late 80's the next city over from me used to tow in 3 -5 of their cars every monday morning and we'd put some gas in them and send them back. They fought us for weeks that there was something wrong with the cars, they couldn't be out of gas because they filled them every night.
We got them to change it to every morning and see what happened. Somehow that solved the problem and it went away.