FAQ – Frequently Asked Questions about the Fuel Cost Calculator
Click a question to expand the answer.
How do I calculate fuel costs? ▼
Fuel cost = (Distance (km) × Consumption (L/100 km) ÷ 100) × Price per litre.
What does consumption in L/100 km mean? ▼
This is your car’s fuel consumption per 100 km—often shown in the onboard computer or in the vehicle specifications.
Can I calculate the cost per person? ▼
Yes. Enter the number of people (including the driver) and the total cost will be calculated per person.
Can I enter start and destination instead of kilometers? ▼
Yes. Start/destination are converted into a road route and the distance is filled in automatically.
How accurate is the toll and vignette estimate? ▼
It is an approximation by country. Real costs depend on the route, vehicle class and local rules.
Which fuel types are supported? ▼
Petrol (E10/91), Premium (E5/95) and Diesel.
Can I change the fuel price manually? ▼
Yes. You can override the price at any time or reset it to the default.
Where do the fuel prices come from? ▼
Depending on the country, average values are used.
Why do real costs differ from the calculation? ▼
Driving style, traffic, weather, load, tyres, actual prices and toll details affect real-world costs.
What are “running costs”? ▼
An approximation for maintenance, wear, depreciation and insurance, plus a toll/vignette estimate.
Can I calculate a round trip? ▼
Yes. Either double the kilometers or calculate the route separately for outbound and return.
How is the CO₂ balance calculated? ▼
CO₂ is estimated from consumption (kg CO₂ per litre), depending on petrol or diesel.
What do the CO₂ comparison values (car/train/flight) mean? ▼
These are guideline values for orientation. Train/flight are typically per seat, car per vehicle.
Does the calculator work worldwide? ▼
Yes. You can select places worldwide. Prices and toll/vignette are stored as approximations depending on the country.
Why is it split 50/50 when changing countries? ▼
It’s a quick estimate when the start and destination countries differ. Exact values would require a precise route split by country.
What to do if no route is found? ▼
Enter the location more precisely (city + country), check spelling, or try a nearby place.
Why is the map sometimes white or loading oddly? ▼
Usually a resize/viewport issue or a slow connection. A reload or “Reset map” often helps.
Can I use the calculator without the map? ▼
Yes. You can simply enter kilometers, consumption and price—without start/destination.
Why are values “$/100 km” useful? ▼
They help you compare vehicles or trips more easily, independent of the route length.
Do you store my inputs? ▼
The calculator works without registration. Inputs are generally not stored server-side; cookies only relate to consent/ads.
Which data should I enter for the best accuracy? ▼
Use your real consumption (e.g. long-term average) and your current fuel price for the most reliable results.