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True MPG: most and least efficient SUVs

What Car?'s True MPG tests show what you can really expect from a car. Here, we reveal the top 10 most and least efficient SUVs we've ever tested...

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The official MPG figures published in car sales brochures can tempt you into buying a particular model, but they're often misleading.

Fortunately, What Car?'s True MPG test tells you what sort of fuel economy you can expect to get in the real world, with our results reflecting what's achievable if you drive gently and stick to speed limits, but don't resort to any unrealistically slow acceleration or special 'hypermiling' techniques.

To ensure that they're comparable for all the different cars we run, we use strictly controlled laboratory conditions. However, the test is based on a real route that takes in town, rural and motorway roads.

Find out more about how we test for True MPG >>

Here, we count down the 10 most efficient SUVs we've tested – plus we reveal the one that used the most fuel.