Home
Back
Fuel Efficiency Formula:
| From: | To: |
L/100km (liters per 100 kilometers) is a metric measurement of fuel consumption that represents how many liters of fuel a vehicle uses to travel 100 kilometers. It is the standard fuel economy measurement used in most countries outside of the United States.
The calculator uses the formula:
Where:
Explanation: This formula calculates fuel consumption by determining how many liters of fuel are needed to travel 100 kilometers.
Details: Calculating fuel efficiency helps vehicle owners understand their fuel consumption patterns, estimate fuel costs for trips, compare vehicle efficiency, and identify potential mechanical issues that may be causing excessive fuel consumption.
Tips: For accurate results, fill your fuel tank completely and reset your trip meter. After driving, refill the tank and note both the amount of fuel used and the distance traveled. Enter these values in the calculator.
Q1: What is a good L/100km value?
A: Fuel efficiency varies by vehicle type. Generally, 5-8 L/100km is excellent for small cars, 8-12 L/100km is average for midsize vehicles, and SUVs/trucks may get 12-18 L/100km.
Q2: How can I convert L/100km to MPG?
A: To convert L/100km to miles per gallon (MPG), use the formula: MPG = 235.215 / L/100km.
Q3: Why does my actual fuel efficiency differ from manufacturer claims?
A: Manufacturer tests are conducted in controlled conditions. Real-world driving with traffic, hills, air conditioning use, and different driving styles will affect actual fuel consumption.
Q4: How often should I check my fuel efficiency?
A: Regular monitoring (e.g., monthly) helps track changes that might indicate maintenance issues. Significant changes in fuel efficiency may suggest problems with tires, alignment, filters, or engine performance.
Q5: Does fuel type affect fuel efficiency?
A: Yes, different fuel octane ratings and fuel types (gasoline, diesel, ethanol blends) can affect efficiency. Always use the fuel type recommended by your vehicle manufacturer.