Enter the total engine displacement (liters) into the Calculator. The calculator will evaluate the Idling Fuel Consumption. 

Idling Fuel Consumption Formula

The following two example problems outline the steps and information needed to calculate the Idling Fuel Consumption.

IFC = ES * .6


  • IFC is the Idling Fuel Consumption (L/hr)
  • ES is the total engine displacement (liters) 

To calculate Idling Fuel Consumption, multiply the size of the engine displacement by .6.

How to Calculate Idling Fuel Consumption?

The following steps outline how to calculate the Idling Fuel Consumption.

  1. First, determine the total engine displacement (liters). 
  2. Next, gather the formula from above = IFC = ES * .6.
  3. Finally, calculate the Idling Fuel Consumption.
  4. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

total engine displacement (liters) = 25

IFC = ES * .6 = ?