I've driven as much as 80 ( and slightly more) miles beyond "zero" range and still have never put more than 15.3 gallons in the 300h. I do not "top off" when I fill up. Whenever the pump cuts off, that's when I stop. I am averaging 38.6 MPG overall tanks of gas since I bought the car in July. It was the same with the Camry Hybrid I drove previous to this car.Toyota/Lexus seems to be very conservative with the programming of their gas gauges. Probably better that than overly precise and have people running out of gas. I also recall from somewhere (one of the hybrid forums) that there is a bladder in the gas tank of modern cars for emissions purposes that can expand/contract and that can also affect how much gas you can put in the car at fill-up - in warmer weather you may be able to pump slightly more.
Toyota/Lexus seems to be very conservative with the programming of their gas gauges. Probably better that than overly precise and have people running out of gas..
I agree. I own a 2004 Prius, and the Prius forum refers to the indicator as the "guess gauge." When it hits E, you have AT LEAST 100 miles left, often quite a bit more. It's hard to tell whether that was intentional (due to the big problems that arise from letting a hybrid run dry, or ultraconservatism) or simply an engineering anomaly.
uiandrew, the range has indicated '0'. I have driven only a very limited amount at that point and have only done it a couple of times. As there can be issues with running out of fuel, it does not make sense to risk it.
I just drove about 40 miles past "E" and the range indicating "0". Gallons added was 15.8, and I generally completely top-off with 3 "click" disconnects after the main service. (won't do that if the vehicle will shortly be idled for a while)
Although some of you can squeeze every mile from a fill up, are you taking a chance of sucking crap/debris from the bottom of the gas tank into your engine for the sake of boasting rights? And, might that cost you more in the long run?
I just drove about 10 miles past 'zero' and decided to really fill the tank, and managed to pump in 17.3 gallons until it was totally full. I managed to put in about 1 1/2 gallons past the initial shutoff 'click' . Perhaps zero is really close to empty!
It was not intentional. I though I had plenty of fuel as typically at 'zero', I though like others that there was still a gallon or so in the tank. I now know better! I am going to refill to full capacity right at empty next time and check again. FWIW, I suspect that the tank holds more than 17 gallons.