Fuel Efficiency Calculator & Formula

Fuel Efficiency Calculator

Fuel Efficiency: Not Calculated Yet

The Fuel Efficiency Calculator helps you measure the efficiency of your vehicle in terms of fuel usage. By calculating either Miles Per Gallon (MPG) or Liters Per 100 Kilometers (L/100km), this tool provides essential insights for monitoring fuel consumption and optimizing driving habits.

Fuel Efficiency Formula

The calculator uses the following formulas based on the selected unit system:

$MPG = \frac{Distance (miles)}{Fuel (gallons)}$

$L/100km = \frac{Fuel (liters)}{Distance (km)} \times 100$

These formulas provide insights into your vehicle’s fuel consumption and efficiency, helping you make informed decisions about your driving and fuel usage.

Why Use This Calculator?

This calculator is perfect for:

Cost Management: Monitor fuel consumption and identify ways to save on fuel costs.
Environmental Impact: Reduce emissions by improving fuel efficiency and adopting eco-friendly driving habits.
Vehicle Maintenance: Identify potential inefficiencies that may signal the need for vehicle maintenance.

Real-Life Example

Let’s calculate fuel efficiency in two scenarios:

Example 1: MPG (Miles Per Gallon)

Distance Traveled: 500 miles
Fuel Consumed: 20 gallons

Step 1: Apply the formula:

$MPG = \frac{500}{20} = 25 MPG$

Result: The fuel efficiency is 25 MPG.

Example 2: L/100km (Liters Per 100 Kilometers)

Distance Traveled: 800 km
Fuel Consumed: 60 liters

Step 1: Apply the formula:

$L/100km = \frac{60}{800} \times 100 = 7.5 L/100km$

Result: The fuel efficiency is 7.5 L/100km.

Benchmark Indicators

Here are typical benchmarks for vehicle fuel efficiency:

High Efficiency: MPG > 35 or L/100km < 7. Reflects excellent fuel economy.

Moderate Efficiency: MPG between 20–35 or L/100km between 7–12. Indicates average efficiency.

Low Efficiency: MPG < 20 or L/100km > 12. Suggests potential fuel wastage or vehicle issues.

Frequently Asked Questions

What is MPG?

MPG (Miles Per Gallon) measures how far a vehicle can travel on one gallon of fuel, commonly used in the United States.

What is L/100km?

L/100km (Liters Per 100 Kilometers) measures the amount of fuel needed to travel 100 kilometers, commonly used in Europe and other metric regions.

How can I improve fuel efficiency?

Maintain proper tire pressure, reduce excessive idling, drive at consistent speeds, and ensure regular vehicle maintenance.

Which unit system should I use?

Use MPG if you’re in a region that uses miles and gallons (e.g., US), or L/100km for kilometers and liters (e.g., Europe).

Fuel Efficiency Calculator & Formula