Gas Tank Capacity in Question
 

My 98 ML320 has, on occasion, taken more than 20 gallons of gas to get it filled, and in every occasion I drove into the station under power. the owner's manual states capacity at 19 gallons, which includes the reserve.

Of course, the reserve light was on but I do a lot of local driving within walking distance of a gas station. My fueling is done at reputable stations, and I even got Sam's Club to refund the price of a gallon once!

Has anyone else experienced this? I am aware the fuel tank can be distorted, but have never experienced any pressure releases in the 10 years I have owned it.

Jim in Phoenix

They probably don't count the filler neck in the size of the tank. You can get an extra gallon in most of them.

Yep sometimes 2 extra gallons can added. Nothing to worry about.