i have a mazda 323-door & we have a safe n sound compaq deluxe. there's no problem fitting it in the back & the premier (i think that's the name of the model) also fit - i think the compaq is more to do with it being narrower so you can still fit more than one car seat in the back? not sure.

DP is 6' & can still fit in the front seat, but it's a real squeeze & his legs are kind of jammed up against the dash! if only he'd learn how to drive a manual then we'd have no problem at all