Fuel is the one road-trip cost that everybody shares and nobody wants to count at a petrol station. The maths is simple; the arguments are about the driver.
⛽ Road Trip Fuel Calculator
There and back, including detours
From the trip computer, not the brochure
Optional
Optional. Only passengers pay it
A worked example
1,000 km there and back, 8 L/100 km, 65 RUB per litre: 80 L, 5,200 RUB. Tolls and parking 2,400 RUB — 7,600 RUB in total. Four people including the driver: 1,900 RUB each. If the driver doesn’t pay: 7,600 ÷ 3 ≈ 2,533 RUB per passenger.
Tricky cases
- Two cars: on a shared trip, pool both cars’ fuel and split it among everyone.
- A passenger for part of the way: split each leg among the people in the car on that leg.
- Speeding fines: the driver pays them.
- Car wear: usually ignored among friends; if you agree on a rate per km, only passengers pay it.
For the rest of the trip budget, see splitting travel expenses with friends.
Frequently Asked Questions
Does the driver pay for fuel?
Both conventions exist. On a shared holiday the driver usually pays an equal share; when the driver is doing everyone a favour with their own car, passengers often cover the driver’s share. Agree before you leave.
How do you estimate the fuel cost of a trip?
Litres = kilometres × consumption per 100 km ÷ 100; cost = litres × price per litre. 1,000 km at 8 L/100 km is 80 L; at 65 RUB per litre that is 5,200 RUB.
What about two cars?
On a shared trip, pool the fuel and tolls of both cars and split them among everyone — which car you ended up in is chance.
Going on a Road Trip?
Log fuel, tolls, food and the rental in one group — and see who owes whom at the end.
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