Car Total Cost of Ownership Calculator

This car total cost of ownership calculator estimates what a vehicle may really cost over a chosen ownership period, not just the monthly payment or purchase price.

It combines depreciation, fuel, insurance, tax and fees, maintenance, and finance interest into one ownership-cost view. It then shows the estimated total cost, annual cost, monthly equivalent, and cost per mile.

Use it when comparing a used car with a new car, deciding whether a cheaper purchase price is really cheaper, checking whether a long commute changes the car decision, or comparing ownership with leasing or public transport.

The calculator is deliberately not a loan approval tool and not a live valuation service. It gives a practical model from the numbers you enter, so the quality of the result depends on realistic assumptions for resale value, mileage, repair costs, and fuel price.

Suppose a car costs £22,000 today and you expect to sell it for £12,000 after five years. The depreciation cost is £10,000, even if no money visibly leaves the bank each month for that depreciation.

If the car travels 10,000 miles per year, gets 42 MPG, and fuel costs £1.55 per litre, fuel becomes another major cost across the ownership period. Insurance, vehicle tax, servicing, tyres, repairs, and finance interest then add to the total.

The calculator brings those costs together so you can see the real ownership cost as a total, annual figure, monthly equivalent, and cost per mile. That is often more useful than comparing purchase prices alone.

Depreciation is usually one of the largest car ownership costs, especially for newer vehicles. It is easy to ignore because it does not arrive as a monthly bill, but it appears when the car is sold or traded in.

A car with a higher purchase price may still be competitive if it holds value well. A cheaper car may cost more than expected if repairs are high or resale value falls quickly.

Use realistic resale values from current listings, trade-in estimates, or conservative assumptions. If you are unsure, run a cautious scenario with lower resale value so the decision does not depend on an optimistic sale price.

Mileage changes almost every part of ownership. More miles increase fuel cost, servicing, tyres, wear, and often depreciation. A low-mileage driver and a high-mileage commuter can have very different true costs for the same vehicle.

The calculator converts MPG and fuel price per litre into an estimated fuel cost. This is useful for UK-style fuel pricing, where fuel is bought by the litre but many vehicle efficiency figures are still discussed as MPG.

Cost per mile is helpful when comparing cars, deciding whether to drive for work, or checking reimbursement rates. It can also make a car commute easier to compare with the commute cost comparison calculator.

This calculator does not include every possible cost. It does not model breakdown risk, warranty cover, opportunity cost of cash, parking permits, congestion charges, tolls, cleaning, accessories, charging infrastructure, or tax rules for business vehicles.

Insurance and maintenance can vary sharply by driver, location, vehicle age, mileage, no-claims history, parts cost, and repair availability. Finance interest depends on the agreement and may not be captured perfectly by one total-interest field.

Use the result as a planning estimate before buying or changing vehicles. For finance agreements, read the actual contract and compare with the loan comparison calculator, car affordability calculator, or car lease calculator where relevant.