Evenflo Revolve 360. It fits in our Corolla. The fact that it rotates makes like so much easier! I can’t imagine trying to squeeze between the front seat and the car seat with a squirmy toddler. Anything that rotates is a dream.
I have the Graco Snuglock 3in1. I love it and it fit in my Honda Civic with lots of room.
We have small sedans as well and the Graco car seats are the most compact option we've found. (We have a trio grow in the Chevy Cruze and a slim fit in the carolla)