There have been a number of posts concerning EV mileage, which I have been monitoring with my own Volt the last 4 months of short & long distance driving. I got the car Jan 6th. I have noticed increases after charges that seem to be, not only positively effected by temperature, but also by speeds & distance. I was naturally concerned, when I first got the car, that I wasn't ever going to see anything on G.O.M. above 45-48, with 34k on the odometer. The G.O.M. started out at 42 after my first charge from a fully depleted battery. My weekly trips to get groceries is a 20 mile trip @ 55mph in EV mode, which only uses 1/2 the available charge. All good. Increases in EV range have been gradual, with temperatures here ranging in the mid to high 30's. Last month temps began to rise into the 40's & 50's, with the EV range making slight increases, with no change in driving habits. A recent 150 mile trip, using "Hold",Mountain" & regular EV didn't really make any difference. However, recent low-speed, short distance driving around the community, (yard sales), & temps into the 60's got the G.O.M. to finally reach 53. (photo attached). This was a goal I was hoping to achieve & now have even more respect for the engineering that went into the Volt. I am delighted I made the decision to get this car. The goal now is to see how high I can get the G.O.M. to go.