Our best and worst True MPG results of 2017
What Car?'s laboratory tests use real-world driving routes to show what fuel economy you can really expect from a car. We look at our top 10 performers for 2017 and the worst...
Over the past 12 months, we've put all manner of cars through our True MPG testing. We use real-world driving data to create a virtual test route that allows us to accurately measure how much fuel a car uses in town, on the motorway and on country roads.
By doing this, we avoid producing the kind of overly optimistic results you're likely to see from official testing. We aim to produce an economy figure you can really expect to achieve in mixed driving if you're sensible.
To make sure our figures are as accurate as possible, we carry out testing in a laboratory on a rolling road. That means there are no variables such as wind, rain or other traffic to affect the result.
Click through this slideshow to see our top 10 best True MPG performers in 2017, and the worst.