Finance

Car Return on Investment Calculator (10 Years)

Calculate return on investment as a percentage. This car version uses a 10-year planning term as its starting point.

The Return figure is the total percentage gain or loss on the amount invested over the whole 10 years, not a yearly rate: a positive figure means the final value is higher than the amount invested, and a negative figure means it is lower.

Formula

Return equals final value minus invested amount, divided by invested amount, times 100.

How it works

A positive return means the final value is higher than the amount invested.

Worked example

Amount invested $10,000, final value $15,000, term 10 years. First, the gain is $15,000 minus $10,000, which is $5,000. Using the page formula, return is $5,000 divided by $10,000, times 100, which is 50.00%. That is the total return over the whole 10 years, not a yearly rate. As an illustration only, not the output of this page, the annualised rate behind the same result is about 4.14% a year, because $15,000 divided by $10,000 is 1.50, and the 10th root of 1.50 is about 1.0414. That is a solid result for a car, but far less dramatic once it is spread over a decade: the value would need to grow by about 4.14% every single year, steadily, to double in 10 years. A single good year in the used-car market can flatter a 10-year figure, so the yearly rate is the honest comparison.

Who this term suits for a car owner: a family-car owner who has held the same car for a decade and is deciding whether to sell it now, trade it against a newer model, or keep it as a second car, with the yearly rate as the test rather than the headline gain.

FAQs

What is a good ROI?
There is no single good figure. Compare returns over the same period and with the same risk before deciding.

Is this car calculator exact?
No, it is an estimate for planning only, based on the numbers you enter.

Are these figures financial advice?
No, they are estimates for planning only, not financial advice. Check with a qualified adviser for decisions involving large sums.

Why does the same 50.00% look smaller over 10 years?
Because the same $5,000 gain is spread over twice as many years. As an illustration only, the annualised rate falls to about 4.14% a year, since the 10th root of 1.50 is about 1.0414. The total return is unchanged; only the yearly pace changes.

Is 4.14% a year enough to beat car running costs over 10 years?
Usually not on its own. Servicing, tyres, insurance and repairs over a decade commonly cost more than $5,000, and this formula counts none of them, so the true return after running costs is lower than 50.00%.

How should I compare a 10-year car ROI with a 5-year ROI?
Compare the annualised rates, not the headline totals, and only between cars of similar type and condition. A 50% gain over 5 years, about 8.45% a year, beats the same 50% over 10 years, about 4.14% a year.

Estimates only, not financial advice. Figures are approximate and do not include all fees, taxes, or changing rates unless stated.