Split the cost of a trip
The awkward conversation, settled with a number. Fuel, tolls and extras split between everyone, or everyone except the driver.
Your figures
Result
- Combustible47 €100,0 %
- Total cost
- $46.50
- Fuel
- $46.50
- Tolls and extras
- $0.00
- People paying
- 4
- Fuel used
- 30.0
- Total distance
- 500
What we assume
- The cost is split equally between everyone who pays. Splitting by distance travelled, when people join partway, has to be done by hand.
- Only fuel, tolls and the extras you enter are counted. Wear on the car is not.
- Untick "the driver pays a share" and the cost is spread among the passengers only, which is the usual arrangement when the driver provides the car.
How it is calculated
Total cost is fuel plus tolls plus extras, divided by the number of people paying.
The only decision with any social content is whether the driver pays a share. Both are defensible: the driver is also travelling, but they are also providing a car that is depreciating and will need tyres. Splitting among passengers only is the common compromise, and it is why the option is there.
What is left out
Wear. A long trip costs the owner in tyres, servicing and depreciation, and that is typically as much again as the fuel. If you want the honest full cost, run the cost-per-mile calculator and use that figure instead of the fuel alone.
An example
500 each way, 6 l/100 km, 1.55 a litre and 40 of tolls comes to about 133. Between 4 people that is 33 each, or 44 each if the driver does not pay.
Frequently asked questions
Should the driver pay a share?
There is no right answer. They are travelling too, but they are also supplying a car that wears out. Splitting among passengers only is the usual middle ground, and it is what the checkbox controls.
What if someone only comes part of the way?
Split the trip into legs and run the calculation for each, then add up what each person owes across the legs they were in.
Should we include wear on the car?
You can, as an "other cost". A fair figure is the cost per mile minus the fuel part, which the cost-per-mile calculator gives you.
Keep calculating
All tools →- What a trip costs in fuelDistance, consumption and fuel price. What the trip really costs, tolls included, and whether the train was cheaper after all.
- Cost per unit of distance of your carFuel is the part you notice and the smallest part of the bill. This adds the ones you do not: insurance, tax, servicing and, above all, depreciation.
Updated on 2026-08-26. Calculations run in your browser; nothing you type is sent to a server.