Fuel Cost Calculator

How are fuel costs calculated?

The formula is simple: daily distance (there + back) × consumption in litres per 100 km × price per litre. With a 30 km one-way commute (60 km per day), a consumption of 7.5 l/100 km and a fuel price of €2.00 per litre, that's €9.00 per day. On a 5-day week it adds up to roughly €195 per month and €2,340 per year - just for getting to work. The calculator above does the maths for you and also shows CO₂ emissions and carpool savings.

What does fuel cost in 2026?

Fuel prices vary a lot between countries and change several times a day. In Germany, for example, E10 petrol currently averages about €2.02 per litre and diesel about €1.95 per litre (ADAC, July 2026). Prices tend to be lowest in the evening and highest in the morning. Check a local fuel price app for the best price near you and set your local price in the calculator above.

What does driving really cost per kilometre?

In fuel alone, at 7.5 l/100 km and €2.00 per litre, a kilometre costs €0.15. But that's only part of the picture: adding depreciation, insurance, maintenance, tyres and vehicle tax, the true cost of driving is around €0.30 to €0.60 per kilometre depending on the vehicle class. Knowing both numbers helps you decide when alternatives like the train, a bike or a carpool are worth it.

Typical consumption by car type

If you don't know your car's exact consumption, these real-world figures are a good starting point. Actual consumption is usually 1-2 litres above the manufacturer's figure:

Why carpooling saves so much

A carpool of two cuts fuel costs in half immediately; with three people each pays only a third. For the example commuter (30 km one way, 7.5 l/100 km, €2.00/l), a two-person carpool saves about €97 per month or roughly €1,170 per year. There's a climate effect too: driven alone, the same commute emits around 2.8 tonnes of CO₂ per year - shared, correspondingly less. The calculator shows the exact savings for 2, 3 and 4 people.

Tip: With GoodShare your carpool can split fuel costs automatically. Just scan the fuel receipt with the AI receipt scanner - GoodShare works out who owes whom.

5 tips to cut your fuel costs

1. Check tyre pressure: 0.5 bar too little increases consumption by 5%
2. Drive smoothly: keeping a steady speed saves up to 20% fuel
3. Start a carpool: halve or third your costs
4. Refuel in the evening: often up to 10 cents per litre cheaper than in the morning
5. Track your spending: people who know their costs save more. GoodShare helps with that.