This pump fits my car perfectly! I was lucky not to have flat tires while driving. But in the long run I still spend money on refueling tires, and not always at the right time and place. The pump is small and I hold it together with a crowbar at the back. It has 2 power modes: either from the car charger port or literally from the car battery! I've used it on my car with no problems. The only thing I wish was air so I don't have to run the car every time I fill up my tires but nothing is perfect. It's pretty close.