RE: Fuel Tank Reserve Indicator-how much left?
One of the computer screens tells you things like mpg, distance traveled, etc., including how many miles worth of gas you have left in the tank. (That depends on the very short term and current consumption rate). My 2001 C240 has 2 gallons of reserve. I believe the C230 has the same. I find the estimate to be eerily accurate. I ran out of gas one time, 10 feet from the pump when the "miles left" showed 0 for the last few minutes in traffic before I could make a left into the gas station.