My '00 Grand Cherokee is just barely big enough for me. My kids in the backseat feet and legs dig into the front seatbacks, and my right leg gets sore on long drives because the the floor hump pushes the gas pedal way over and I have to hold my leg in an unnatural position against the console. Also, the brake pedal is too far over to the left due to the floor crampness, and I have to use my left foot on the brake sometimes, because when I rotate my right foot over to it and push, part of my foot will still be on the gas pedal. I could not possibly imagine driving an even more cramped Liberty. I like them and all, and they have done very well in quality/satisfaction ratings compared to other Jeep models, but no way could I use one as a family vehicle.