True MPG: best and worst cars revealed

What Car?'s laboratory tests use real-world driving routes to show what fuel economy you can really expect from your car. So, what are the best and worst performers?

Words By Steve Huntingford

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4. Seat Leon 1.6 TDI 110 Ecomotive

Official fuel economy; 78.5mpg; True MPG 56.0; Shortfall: 28.7%

The Leon is a stylish family car that's also practical, good to drive and well priced. And when it comes to real-world fuel economy, the 1.6-litre diesel version is good enough to take our fourth spot.

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3. Vauxhall Astra 1.6 CDTi 110 Ecoflex

Official fuel economy: 83.1mpg; True MPG 56.3; Shortfall: 32.2%

Like the Leon, the latest Vauxhall Astra is a well-rounded, good value hatchback that offers plenty of room for the family. And its True MPG of 56.3mpg makes it even kinder to your wallet.

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2. Suzuki Celerio 1.0

Official fuel economy: 65.7mpg; True MPG 57.8; Shortfall: 12.0%

Suzuki's rival to the Hyundai i10 and Skoda Citigo is surprisingly practical as well as incredibly cheap to buy and run, while its 1.0-litre petrol engine offers perfectly acceptable performance as long as you don't spend a lot of time on the motorway.

Read our full Suzuki Celerio review

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