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Cars & Travel
Carpool Cost Calculator
Calculate the costs of carpooling and share fuel and wear costs among passengers.
Fuel Consumption Calculator
Calculate your car’s fuel consumption mpg based on the fill-up.
✅ Free
📅 Updated 22.9.2026
🚗 2026
About this calculator
What is the Fuel Consumption Calculator – mpg?
The fuel consumption calculator calculates the fuel consumption of a car in miles per gallon (mpg). Enter the amount filled in liters and the distance driven, and you will get the consumption and can compare differences between different trips.
The calculator is free, works directly in the browser, and does not require registration. All figures are based on standard formulas; always check the rules that apply where you live.
Calculation Principle
Consumption (l/100km) = Amount filled (l) ÷ Distance driven (km) × 100
Fill in the fields of the calculator with your information and press the calculate button – the result will be displayed immediately. Try different values to compare options.
Practical Example
Filled 52 liters, driven 680 km → consumption = 52 ÷ 680 × 100 = 7.65 l/100 km.
Enter your own numbers into the calculator to get a personal result. The calculator is designed for quick use in everyday situations.
When do you need this calculator?
The calculator is needed to support decision-making, budgeting, and cost comparison. Getting accurate references quickly makes everyday life easier.
The result is an estimate – for important financial or construction decisions, we recommend consulting a professional.
Tips
- Maintaining a steady speed saves fuel – avoid sudden accelerations.
- Check tire pressure monthly – low pressure increases consumption by 3–5%.
- The eco-speed for motorway driving is 55.9–62.1 mph, not 74.6 mph.
Frequently Asked Questions
The most accurate method: fill the tank and note the odometer reading. Drive several hundred kilometers, refuel the tank again. Divide the amount of fuel filled by the kilometers driven and multiply by one hundred.
The fuel consumption of passenger cars is typically 5–9 l/100 km. On the highway 5–7 l, in the city 7–12 l. A hybrid car consumes 4–6 l and a large SUV 9–13 l.
A cold engine, winter tires, additional heating, plowing forces, and shorter driving distances can increase consumption by 15–25 % compared to summer.
Maintaining a steady speed, anticipating braking, and using the correct gear can reduce consumption by 10–20 %. A smooth driving style is the most efficient.
Enter the fuel price and annual miles into the calculator. For example, a cent cheaper per liter saves 10,000 km/year for a driver 5–8 $ per year per liter.
Calculate fuel consumption per hundred miles based on annual miles and fuel price. The calculator does this automatically when you enter the data.