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Which? tests reveal the most polluting cars and the most economical

Which? tests reveal the most polluting cars and the most economical

We've discovered diesel cars that produce fewer harmful NOx emissions than the average petrol car. Plus two petrol-hybrids that are as fuel efficient as a diesel car on the motorway.

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How much is your car really costing you?

How much is your car really costing you?

Motoring costs have risen by as much as 37% for some. Which? research shows you how to buy the most reliable and fuel-efficient car.

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Would your car pass the new fuel and emission tests?

Would your car pass the new fuel and emission tests?

New tests that aim to bring about more realistic fuel economy and emission figures, and hopefully stop another Volkswagen emission scandal, are now law. For years we’ve complained and campaigned...

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