What is the true cost of owning a car?

Financing, depreciation, and running costs together, not the purchase price. This page covers all three: the interest you pay to borrow, the value the car loses while you own it, and what fuel costs you across commuting and longer trips. Insurance and maintenance sit on top of that and vary too much by driver and model to estimate honestly here.

Is it cheaper to buy new or used?

Used is usually cheaper overall, because the first owner absorbed the steepest part of the depreciation curve. The trade-off is a higher interest rate, a shorter or absent warranty, and more maintenance. Run both through the first two steps and compare interest plus value lost — that comparison is more useful than the sticker prices.

How much does a longer loan term really cost?

It lowers the monthly payment and raises the total, and it keeps you owing more than the car is worth for longer. Compare 48, 60, and 72 months in the first step and read the interest line: the gap is the price of the smaller payment. If the only way to afford a car is the longest term offered, that is usually a signal about the car rather than the loan.

Does fuel economy matter more than price?

It depends entirely on how far you drive. At a short commute the difference between 30 and 40 MPG is minor; at a long one it compounds into thousands over a few years. That is exactly what the last two steps are for — put your real mileage in and the answer stops being a matter of opinion.

Guide

Buying a Car

What a car really costs: the financing, what it loses in value while you own it, and what you spend driving it. Four calculators in order, with your numbers carried forward.

The price on the windscreen is the smallest part of this decision. A car costs you three separate things — the financing, the value it quietly sheds while parked, and the fuel to move it — and only the first one gets negotiated.

Work down the page. The price you enter at the top follows you into the depreciation step, and the fuel figures you enter for your commute follow you into the last one. Everything recalculates as you change anything above it.

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Step 1 What does the financing cost?

Start with the deal itself. Dealers negotiate on the monthly payment because that is the number that feels like the price, but the total of payments is what you are actually agreeing to. Enter the price, what you are putting down, your trade-in, the rate, and the term — then watch the interest line as you stretch the term.

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Step 2 What will it be worth when you want to sell?

Depreciation is usually the largest cost of owning a car and the only one that never sends you a bill. A typical new car sheds a large share of its value in the first three years, which is why the same money spent on a two-year-old car buys a very different outcome. The price carries down from the step above.

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Step 3 What does driving it actually cost?

Now the running cost, which for most people is dominated by commuting. Enter your round trip, how many days a week you make it, the fuel economy of the car you are considering, and what you pay for fuel and parking. This is the number that makes a thirstier car expensive long after the purchase.

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Step 4 And a longer trip?

Commuting is not the only driving you do. Put a road trip, a regular family visit, or your annual mileage in here to see what the same car costs away from the daily run. The fuel economy and fuel price carry down from your commute, so you are pricing the same car rather than starting over.

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Where that leaves you

Add the three together before you decide: the interest from the first step, the value lost in the second, and a year of driving from the third. That total is what the car costs you, and it is usually far more than the monthly payment suggests. A cheaper car with worse fuel economy can easily lose to a pricier one that holds its value — the only way to know is to run both down this page and compare the totals.

What this does not cover

Insurance, maintenance, tyres, registration, and repairs are all missing here, and they are not small — budget meaningfully for them, especially on a used car out of warranty. Sales tax and dealer fees are excluded from the financing step too; add them to the price for a truer figure. Depreciation is modelled on a typical curve and real values vary enormously by model, condition, and mileage.

Common questions

What is the true cost of owning a car?: Financing, depreciation, and running costs together, not the purchase price. This page covers all three: the interest you pay to borrow, the value the car loses while you own it, and what fuel costs you across commuting and longer trips. Insurance and maintenance sit on top of that and vary too much by driver and model to estimate honestly here.
Is it cheaper to buy new or used?: Used is usually cheaper overall, because the first owner absorbed the steepest part of the depreciation curve. The trade-off is a higher interest rate, a shorter or absent warranty, and more maintenance. Run both through the first two steps and compare interest plus value lost — that comparison is more useful than the sticker prices.
How much does a longer loan term really cost?: It lowers the monthly payment and raises the total, and it keeps you owing more than the car is worth for longer. Compare 48, 60, and 72 months in the first step and read the interest line: the gap is the price of the smaller payment. If the only way to afford a car is the longest term offered, that is usually a signal about the car rather than the loan.
Does fuel economy matter more than price?: It depends entirely on how far you drive. At a short commute the difference between 30 and 40 MPG is minor; at a long one it compounds into thousands over a few years. That is exactly what the last two steps are for — put your real mileage in and the answer stops being a matter of opinion.