I just bought a 2013 Tundra DC w/5.7 and had a question about how the gas gauge reads. I only have a little over 700miles on the truck so far. When I ran the tank down and the gas light came on I stopped and filled the truck and it would only take 19 gallons. I believe the truck has a 26 gallon tank and was surprised to see the light come on with 7 gallons left. This past weekend I filled the tank with a little less than a half tank and it only took 11 gallons so I was thinking that the gauge callibration might be off a little. Has anyone else experienced this? BTW I love driving this truck and so far I am averaging 15mpg.