SUV/Sedan with rear-facing car seat

Kelsey
Hi all!! Well my little Mazda3 doesn't easily fit a rear-facing car seat (or a car seat period) so we are looking for a new car! I prefer an SUV because we have a sedan already, but I'll be open to both. It will be a used car, not buying new. Just want a reliable car, with decent gas milage (sorry honey, not getting a Hummer), kid/car seat friendly. 
Let me know, thanks!