Requires 10Amp pump to work with Prius PSU. Only used once and meets my needs. I would have liked a longer power cord. To get to the rear wheels, I have to go inside the car. The accuracy is close to what I'm getting from the sensor, so it's hard to know what's right. The pump is fixed in a metal housing. I'm not sure I like it, but I know I can count on the pumping power. This is my second VIAIR pump purchase.