Total Cost of Ownership Calculator

Free Total Cost of Ownership Calculator: calculate total cost of ownership instantly with transparent formula, worked examples and tips. No signup.

The total cost of ownership (TCO) of a vehicle encompasses every expense incurred from purchase to disposal: depreciation, finance charges, fuel, insurance, road tax (VED), servicing, tyres, MOT fees, and parking or tolls. For most households these combined running costs make vehicle ownership significantly more expensive than the sticker price implies — a £20,000 car can cost £7,000–12,000 per year to own over three years when all components are included. Loan Payment Calculator and Mortgage Calculator model individual components of this total in detail.

TCO analysis is essential when comparing vehicles with different purchase prices, fuel types, or residual values. An electric vehicle may have higher depreciation but lower running costs per mile, creating a crossover year where net TCO equalises against an equivalent petrol vehicle. Without a full TCO calculation, purchase-price comparisons routinely underestimate the true cost difference.

Enter purchase price and expected residual value to derive depreciation over the ownership period.
Enter annual fuel or EV charging cost (annual distance × cost per mile or km).
Enter annual running costs: insurance premium, VED (road tax), scheduled servicing, and estimated tyre replacement frequency.
Add finance charges (total interest paid) if the vehicle is financed rather than purchased outright.
The total cost of ownership output is the sum of all components, expressed as an annual figure and a per-mile figure for easy comparison across vehicles.

Total cost of ownership formula

TCO = Depreciation + Finance charges + Fuel/charging + Insurance + Road tax (VED) + Servicing + Tyres + MOT + Parking/tolls

Annual TCO = Total TCO ÷ Ownership years | Per-mile TCO = Total TCO ÷ Total miles driven

Worked example: £25,000 car over 3 years, 30,000 miles. Depreciation £10,000 + fuel £4,500 + insurance £2,700 + VED £600 + servicing £900 + tyres £400 + MOT £150 + finance charges £1,500 = £20,750 total TCO = £6,917/year = approximately 69p/mile all-in running costs.

Interpreting your total cost of ownership

TCO benchmarks by vehicle type

Typical UK total cost of ownership per year (10,000 miles/year, 3-year ownership): small city car — £4,000–6,000; family hatchback — £5,500–8,500; compact SUV — £7,000–10,000; premium saloon — £10,000–16,000; battery electric vehicle (model-dependent) — £5,000–10,000. Depreciation and finance charges typically represent 45–55% of total TCO; fuel is the next largest component at 20–30% for petrol or diesel vehicles. EVs significantly reduce the fuel component but vary on depreciation. Loan Payment Calculator focuses on the depreciation component in isolation.

Finance tips and best practices

Depreciation is typically the largest single running cost — optimise residual value by choosing strong-retention models, keeping annual mileage near the segment average, and maintaining full service history.
Insurance group significantly affects annual premium — check the insurance group of any vehicle before purchasing; a group 20 car can cost twice as much to insure as a group 10 car for identical drivers and usage.
Multi-year servicing plans purchased at point of sale often represent 20–30% savings over pay-per-service retail rates — include these in the purchase negotiation.
Electric vehicles have substantially lower running costs per mile than petrol equivalents (charging vs fuel, fewer mechanical service items) — model TCO over 3+ years to capture the full cost difference, including higher purchase price and varying depreciation.

Average UK vehicle running costs excluding depreciation and finance: approximately £3,500–5,000/year for a mainstream family car (RAC Cost of Motoring Report, 2023).
Depreciation and finance charges: approximately 45–55% of total cost of ownership over a standard 3-year ownership period.
EV home-charging cost: approximately 7p/mile (at typical home electricity tariff) versus approximately 15–20p/mile for a petrol equivalent — a 55–65% per-mile fuel saving.
Tyre costs for EVs: some electric vehicles go through tyres 30% faster than petrol equivalents due to additional vehicle mass and instant torque output.

Common mistakes to avoid

Using purchase price as the affordability measure without calculating total cost of ownership — a 10% cheaper car with higher insurance group, worse fuel economy, and poor residual value typically costs more to own over three years.
Underestimating tyre costs — performance, SUV, and EV tyres can cost significantly more per tyre and wear faster than standard fitments; include realistic tyre replacement frequency in the TCO calculation.
Omitting unscheduled repair costs — older vehicles carry lower depreciation but higher maintenance risk; include a contingency for unexpected mechanical costs, especially beyond the manufacturer's warranty period.
Not including parking and toll costs for commuter vehicles — in major UK cities these can add £1,000–3,000 per year to total cost of ownership and significantly change the vehicle comparison.

Road tax (Vehicle Excise Duty) rates are set by HM Revenue & Customs and DVLA and vary by CO₂ emission band, vehicle age, and fuel type. Insurance premiums are market-determined and vary by driver profile, vehicle, and location; the FCA regulates the general insurance market in the UK. Fuel and electricity prices are market-determined and vary by region and supplier. TCO estimates produced by this calculator are for planning purposes only. Company car tax (Benefit in Kind) calculations require additional considerations not covered here — consult a qualified tax adviser for fleet or employer-provided vehicle analysis.