My c isn't the easiest car for me to get into (I'm 5' 11") but once I'm inside, I seem to have plenty of room.
My C is a small car, but it's a very well made small car, maybe one of the best built cars I've ever had, and maybe the best car I've ever had. There's a lot to like about a Prius C. I always liked the Echo and the Yaris and I'm glad I finally got myself a good Toyota.
