Fuel is dependent on use, Unfortunately we are not able to provide an estimated cost. However you can use some of the ques below to help you monitor that expense. Most of our Boats have a 50 gallon capacity Consumption increases by the workload on the engine. Many factors increase the workload on the engine for example; Weight in the boat, Speed, Towing and Run Time are all factors. Gas on the lake averages $1.00 per gallon above street prices. Most fuel gauges do not accurately determine the volume of the tank. The 3/4 of a tank more accurately depicts 2/3 of the tank, half tank will more closely indicate that 1/3rd is remaining.