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Costs and money , Buying a used car , On the road · Updated 2026-10-18

Set your budget: the total cost of a car

Many people set their budget by the price of the car and stop there. A year later they discover that the car itself was the smaller part of the spending. A sensible budget covers the purchase, the running costs and a cushion for the unexpected. This guide shows how to build one.

The purchase price

This is the number everyone looks at. Remember that the final cost is usually higher than the advertised price, because of paperwork, transfer, registration and any work the car needs right away. Rules and fees differ by country, check with the competent authority.

Fixed yearly costs

These costs arrive whether you drive a lot or not.

• Insurance. Compare offers, because cover and price vary widely. See insurance types explained.
• Registration and periodic inspection fees.
• Parking, if you do not have your own space.
• Any loan or leasing payments.

Running costs

These grow with the kilometres you drive.

• Fuel or electricity. Estimate your yearly distance and the car's typical consumption. Saving fuel has ideas to reduce this part.
• Servicing: oil, filters, brakes and other regular work. Check how often to service.
• Tyres, which wear out and need replacing, and seasonal changes if you use two sets.
• Washing, small parts, wipers and bulbs.

The unexpected

Every used car can surprise you. A sensible rule of thumb is to keep a reserve that would cover a medium repair without hurting your finances. The older the car and the thinner its history, the bigger the reserve should be. A cheaper car with an unknown past can end up more expensive than a dearer one with full records.

Depreciation, the invisible cost

A car loses value with time and use. You do not pay this each month, but you feel it when you sell. Cars that are common, well-kept and in demand usually lose value more slowly. Newer cars tend to lose more in absolute terms, older ones lose less but need more repairs. Neither is free.

A simple way to calculate

1. Add up all yearly costs: fixed costs, fuel, servicing, tyres and a repair reserve.
2. Add the yearly value lost by the car, estimated honestly.
3. Divide by twelve to get a monthly figure.
4. Compare that figure with what you can comfortably spend each month.

The cost of ownership tool does this arithmetic for you, so you can compare two cars side by side.

Check the whole picture

If the monthly figure is higher than you expected, there are several ways out: choose a cheaper model to run, a smaller engine, a different fuel type, or keep the car longer. The guide on diesel or petrol explains how engine choice affects costs. Look also at cheaper running costs once you own the car.

Track it after buying

A budget is only a guess until you compare it with reality. Record what you spend in My Garage and look at the totals every few months. If reality is higher than the plan, you will notice early and can change habits.

Example of thinking it through

Imagine two cars with the same asking price. One has a small, economical engine and cheap, common parts. The other has a large thirsty engine, expensive tyres and a complicated gearbox. On the day you buy them they look equal, yet a year later their costs may be far apart. Comparing the two on paper before buying, with realistic yearly distance, is what turns a price into a budget.

Also think about how long you will keep the car. A car you keep for many years spreads the purchase cost thinly but brings more repairs. A car you swap often costs more in lost value. Neither choice is wrong, but you should choose it knowingly.

Ways to keep the budget under control

• Prefer a car that is common in your area, since parts and labour are usually cheaper.
• Ask for the service history, because a well-kept car is less likely to bring surprise bills.
• Avoid options you will not use, such as large wheels with expensive tyres.
• Compare insurance offers every year rather than renewing automatically.

None of these tricks requires sacrifice. They simply move money from avoidable costs to things you actually enjoy.

What to remember

• The price is the start of the cost, not the end.
• Include insurance, fuel, servicing, tyres, fees and a repair reserve.
• Estimate the value the car will lose.
• Turn everything into a monthly figure and compare it with your income.
• Do not stretch the budget to the limit; leave room for surprises.

Beginner Costs Financing Fuel Insurance Service history Used car