Transport
Car cost tool
The purchase price is only the start. This page spreads the drop from purchase price to a resale value you expect, then adds a year of energy, insurance, service, and tolls. The total is also shown per kilometre.
Quick math
Use this for quick arithmetic, percentages, or to check figures while filling in the main tool, without leaving the page.
Estimate
75,600 NOK per year to own and run
- Annual cost
- 75,600 NOK
- Monthly cost
- 6,300 NOK
- Cost per kilometre
- 6.30 NOK
How this breaks down
- Depreciation
- 40,000 NOK
- Fuel or charging
- 15,600 NOK
- Insurance
- 9,000 NOK
- Service
- 5,000 NOK
- Tolls
- 6,000 NOK
Straight-line depreciation from your purchase price to the resale value you expect. Loan interest is not added again if it is already in the price you pay.
How to use this tool
- Use Car Cost Tool for the question described above, and check that the inputs match your records and time period.
- Enter purchase price.
- Enter expected resale value.
- Enter years you keep it.
- Enter kilometres per year.
- Enter use per 100 km (Litres for a fuel car, or kWh for an electric car.).
- Enter price per litre or per kwh.
- Enter insurance per year.
- Enter service per year.
- Enter tolls per year.
- Change purchase price, expected resale value, years you keep it, kilometres per year, use per 100 km, price per litre or per kwh, insurance per year, service per year, tolls per year to compare scenarios, then check the units in the result.
Worked example with the prefilled values
This example shows how Car Cost Tool uses its starting values. Change the calculator inputs to estimate your own situation.
- Purchase price
- 420000 NOK
- Expected resale value
- 220000 NOK
- Years you keep it
- 5
- Kilometres per year
- 12000 km
- Use per 100 km
- 6.5
- Price per litre or per kWh
- 20 NOK
- Insurance per year
- 9000 NOK
- Service per year
- 5000 NOK
- Tolls per year
- 6000 NOK
75,600 NOK per year to own and run
- Annual cost75,600 NOK
- Monthly cost6,300 NOK
- Cost per kilometre6.30 NOK
Straight-line depreciation from your purchase price to the resale value you expect. Loan interest is not added again if it is already in the price you pay.
Formula and calculation logic
Annual depreciation = max(0, purchase price − resale value) ÷ ownership years
Annual energy cost = annual kilometres ÷ 100 × consumption per 100 km × unit price
Annual ownership cost = depreciation + energy + insurance + service + tolls; monthly cost = annual cost ÷ 12
Depreciation is the purchase price minus the resale value, divided by the years you plan to keep the car. That is a straight line, not a market forecast.
Energy uses either litres per 100 km and a price per litre, or kWh per 100 km and a price per kWh. Label the fields to match the car you are costing.
Loan interest is left out so it is not counted twice. If you borrow, add the interest from the car loan tool yourself.
Assumptions
- Insurance, service, and tolls are annual amounts you supply. The sample numbers are round planning figures.
- Tyres, parking, and washing are not separate lines. Fold them into service if you want them in the total.
- A resale value above the purchase price produces no depreciation. It does not create a gain in the total.
Published sources
Further reading for checking current rules and information. These links are not live inputs to the tool.
Questions about this tool
What resale value should I use?
Use a cautious figure for the age and distance you expect at sale. The page will not look up used-car prices.
How do I cost an electric car?
Put kWh per 100 km in consumption and the kroner you pay per kWh in the energy price. Home charging and public charging are different prices.
Does this include the loan payment?
No. A loan payment mixes interest with money that becomes your equity in the car. Depreciation already represents the loss of value.