Quote Originally Posted by Daox
I'd be surprised if the sedan would benefit from a rear brace. I've done testing in other cars that indicates that the rear deck is strong enough to brace the car to the point where I couldn't detect any movement in the rear strut towers. The hatch doesn't have a rear deck so I can see the benefit though.
It's easy to see the hatch needs bracing in the rear. The way to do it is to fold the rear seat down, park on an uneven surface and then try to put the seat back up...will not line up very well. Even if there is only an inch or two difference in surface variation.