Disclaimer

The unit conversions on this site are computed from the exact legal definitions of the US gallon (3.785411784 litres), the imperial gallon (4.54609 litres) and the mile (1.609344 km). They are arithmetic, they are tested, and to the best of our knowledge they are correct to the precision displayed. If you find one that is not, please tell us.

Where the site quotes an official fuel economy rating for a specific vehicle, the figure is an approximate combined rating for a recent model year in a common trim, given to show the scale of the units rather than to describe a particular car. Ratings vary with model year, engine, drivetrain, wheel size and trim, sometimes by several mpg within one model name. Always check the official figure for the exact vehicle you are considering, from the manufacturer or the relevant government body, before relying on it.

Official ratings are laboratory results and real-world fuel economy is usually lower. The guides explain why and by roughly how much, but the site cannot predict the fuel economy you will get from any car.

Statements such as what counts as good fuel economy, how much a particular driving habit costs, or how the test cycles compare are general guidance drawn from published sources named in the guides. They are opinions informed by those sources, not measurements of your situation.

Nothing on this site is engineering, legal, financial or regulatory advice. If a conversion matters for a filing, a contract, a vehicle import, a tax calculation or any decision with consequences, verify it independently.

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