Something's fishy here. LX cvt gets +4 city /+4 highway mpg from the manual, but EX cvt only gets +3/+1. EX manual adds 60 lb over LX manual, EX cvt adds 97 lb over LX cvt. LX cvt adds 31 lb over manual, EX cvt adds 57 over manual. Sounds to me like LX CVT is some sort of "hf" model with special treatment to get 40+ mpg advertising rights .