We have a 2006 Corolla Sportivo and like TK never used a capsule, but a reversible car seat. - We have a safe n sound Compaq Deluxe and this was the only one that fitted comfortably without the passenger seat having to be crammed right forward. - ALL of the baby shops i went to ( and i went to HEAPS!) all recommended the Compaq Deluxe for hatchbacks. - Maybe take your car to a baby bunting store (or similar) as i was able to test it out and see if it fitted.

All of the above is now obsolete though as we got a new car a month ago and now DH drives the Corolla and i drive the new car with bubs in it