Was stored in my wife's van. Yesterday one of the tires was a bit low on the TPMS system but which tire doesn't tell. With the built in pressure gauge, it didn't take long to figure out which tire was too low and pump it up. It was a lot quicker than a gas station trip and the tire filled about as fast as my larger compressor at the store. It was easier to use than the store because it had a light. I didn't have to fiddle around with a flashlight to check the tires. I really like this unit.