my rear facing car seat hits the passenger seat in my 3 series saloon but its not so bad that the passenger in the front seat is squashed.my daughters forward facing car seat however makes her legs touch my drivers seat. have had to adjust the angle of my seat a bit but nothing major. there is a website that you can type your car in and the model car seat you have and it will tell you a few bits of info but i cant remember it.google should help