I ran out off gas on purpose to find out how much the gas tank holds. I came up with 13.86gal on the first click filling slowly. Car was reasonally level and trip gauge read 590mi corrected to 599mi, 13.09gal. 13.86gal actual, 320.4mi EV, 45mpg, actual 43.2mpg (40's rainy cold weather). I was prepared for the worst with 2gal can in trunk but ran out couple hundred yards from gas station. I EVed it to station. When you run out you get message in RED that states STOP SAFELY then ICE dies and your on EV. What next happens I'm not sure about because I had to turn right into parking lot to turn around to go across the street to gas station. When I stopped to backup the car acted dead. I didn't floor it but instead I put it in park and turned it off and back on. At that point everything acted normal and I EVed it across the street to gas pumps. I would say I got lucky on that one and could have turned out to more of a problem. Now we know pretty close to what the tank holds. :)