New True MPG results 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 from June and July?...

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What Car? team
25 Jul 2017 08:43 | Last updated: 14 Jun 2018 00:03

The Suzuki Ignis is the most fuel efficient car we've ever tested, averaging an impressive 59.6mpg on our True MPG tests, while at the other end of the scale we also have a new worst-performing car in the Audi SQ5, which managed just 24.6mpg.

What Car?'s True MPG tests are conducted in a laboratory under strictly controlled conditions, but based on a real route that takes in town, rural and motorway driving.

### How we fuel test cars

Below we take a look at all of the cars we've tested in June and July, revealing the fuel economy you can really expect them to deliver on UK roads.

Audi Q5 2.0 quattro S line S tronic

New True MPG results revealed

Official fuel economy: 55.4mpg; True MPG: 41.0mpg; Shortfall: 26.1%


Audi SQ5

New True MPG results revealed

Official fuel economy: 33.2mpg; True MPG: 24.6mpg; Shortfall: 25.8%


BMW 5 Series Touring 520d M Sport

New True MPG results revealed

Official fuel economy: 62.8mpg; True MPG: 44.9mpg; Shortfall: 28.5%


Mazda 6 2.2d SE-L Nav

New True MPG results revealed

Official fuel economy: 68.9mpg; True MPG: 47.3mpg; Shortfall: 31.3%

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