Presently, my car has a little over1800 miles. The MPG for interstate driving has steadily increased from 32-33 mpg running at 75mph on rolling terrain up to around 35-36 mpg. The mpg for in or around city driving started out at 34-36 mpg and has increased to 40-42 mpg running at speeds from 40-65 mph. I'm seeing the mpg increase on level and downhill runs (lower speeds 40-60 mph); occasionally the car stays in the electric mode pulling hills with a minimal incline in grade. However, in most instances the motor remains engaged when going up an incline at speeds of 40-65 mph. (lower MPG) I'm certainly having to learning how to drive this type of vehicle in order to achieve the desired mpg results; it is definitely different than my old F-150 Super Cab Lariat PU. I added a 35lb. 2' drill free trailer hitch made by Torklift.com out of WA State for a Thule 4 bike carrier and have not noticed any difference in the mpg. (Presently only1 bike) It was very easy to install to. The car is a fun to drive, rides comfortably, easy to get in and out of, very little road noise, has plenty of HP for passing situations, and is very responsive. One thing I have noticed or I think I’ve noticed is that because of my smaller size that are a lot of jokers out there that like to cut me off or ride my four point contact. Oh well, overall its all good.