I ran out of gas on the highway and never got a low fuel light. USAA delivered me one gallon of fuel which got me to a gas station 3 miles away. At the gas station it would only take 13.4 gallons of fuel. So I was only able to add ~ 14.4 gallons of fuel to a tank that should hold 19.8 gallons. It drove fine after that for the next 150 miles to get me home. Is it possible that my fuel pump is weak? I've also hit a period of time (past 6 months) when I have to crank the car twice to get it to start regardless of how long I crank it the first time. But the second time I hit the ignition, it always starts right away. Before I change out the fuel pump, I thought I would seek the advice of this group. I'm original owner of this 2000 GS400 and it only has 128,000 miles on it.