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Fuel Consumption Calculator

Quick answer

Fuel use = litres ÷ km × 100: burning 42 litres over 560 km reads 7.5 L/100km (≈31.4 MPG) — track every fill-up.

  • Compare fills and vehicles easily.

Figures are estimates from this calculator’s standard formula — adjust the inputs in the tool below for your exact number.

How the Fuel Consumption Calculator Works

Consumption Rate = (Fuel Amount / Distance) x 100

This tool calculates your vehicle's fuel consumption rate in liters per 100 kilometers or kilometers per liter. This helps you understand your car's efficiency and plan your fuel budget.

  1. 1

    Step 1

    Fill the tank completely and record the odometer reading

  2. 2

    Step 2

    Drive normally until you need to refuel

  3. 3

    Step 3

    Fill the tank again and record the fuel amount added

  4. 4

    Step 4

    Record the new odometer reading

  5. 5

    Step 5

    Calculate distance traveled and divide fuel amount by it

Use Cases

Fuel Budget Planning

Estimate monthly fuel costs based on consumption rate

Comparing Vehicles

Compare fuel efficiency when buying a new car

Monitoring Engine Health

Detect engine problems by noticing increased fuel consumption

Improving Driving Style

Measure the impact of changing driving habits on fuel consumption

Tips

  • 1

    Measure consumption over several fill-ups for an accurate average

  • 2

    Compare your consumption to the manufacturer's official rating

  • 3

    Track consumption regularly to notice any changes

  • 4

    Calculate consumption under different driving conditions (city/highway)

  • 5

    Use an app to track fuel consumption over time

Common Mistakes

  • Measuring After One Fill-Up

  • Not Filling the Tank Completely

  • Ignoring Driving Conditions

  • Forgetting Weather Impact

FAQs

What is normal fuel consumption?

It varies by vehicle type. Small cars: 5-7 L/100km, medium cars: 7-10 L/100km, large cars and SUVs: 10-15 L/100km.

How can I reduce fuel consumption?

Maintain proper tire pressure, avoid sudden acceleration and braking, turn off the engine during long waits, reduce AC use, and remove unnecessary loads.

Why is my consumption higher than the official rating?

Official ratings are measured under ideal conditions. Real-world driving includes traffic, AC, loads, and different driving styles. A 10-20% difference is normal.

Does driving slowly always save fuel?

Not necessarily. Optimal efficiency is usually at 60-90 km/h. Driving too slowly or too fast both increase consumption.

When does increased consumption indicate a problem?

If consumption suddenly increases by 15-20% or more without obvious cause, it may indicate engine or fuel system problems. Consult a mechanic.
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