This ramp makes entering the car for my dogs very easy. The height is good for medium-sized SUVs, but there is always a gap between the ramp and the seat. My old dogs have no problem, however, ignoring this gap and gaining entrance to the car. My full-sized SUV is higher - and there is still no problem for my old dogs entering the back seat. The only problem I have with this unit is that I lost one of the screws holding the ramp totally extended (my fault for unscrewing it completely). Since there is a screw on each side of the unit, the ramp will remain fully extended without the missing screw. So no biggie!