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?...
1. Suzuki Ignis 1.2 SVHS
Official fuel economy: 65.7mpg; True MPG 59.6; Shortfall: 9.3%
Another Suzuki, the Ignis, is the most efficient car we've yet tested. There's plenty to like about this miniature off-roader, including its low price and generous standard equipment. The 1.2 SVHS model has a small electric motor which helps the engine, allowing you to use less revs and consequently less fuel, particularly around town.
The least fuel-efficient car tested:
Official fuel economy: 33.2mpg; True MPG: 24.6
This sporty version of the Audi Q5 is properly fast and handles well, but its turbocharged 3.0-litre V6 petrol engine is so thirsty that you'll spend almost as much time at the pumps as you will enjoying its heady performance.