[cstreit]

Simple... Take the height of the car from the ceiling... Measure what is left. Is that shorter than you? Then too short. If you can't at least walk under the car, then it isn't tall enough? Can you imagine trying to work overhead hunched over or squatting?

Your alternative is a good rolling stool and sitting down all the time. With low ceiling heights I like low-rise lifts with floor plates... You can get the car RIGHT up to the ceiling. Ensure it has a height limit switch that's adjustable so you don't put the car through the ceiling.