LOL, the transmission is not a conventional CVT. It's a planetary gear set with 2 electric motors but it does need a fluid change every 150 k miles. Watch this video. The hybrid transmission is covered by the unique hybrid components warranty for 8 years and 100 k miles. The C-Max Hybrid is one of the best cars I've owned especially on the highway. How far is your commute? At 60 mph cruising you should get in the mid 40s mpg minimum. If you follow ptjones videos, you can likely get upper 40s. Cold will kill your mpg especially until engine is warmed up - likely lower 40s. Of course AC is summer is also a hit to mpg.