True MPG: the most and least efficient cars revealed
What Car?'s laboratory tests use a real-world driving route to show what fuel economy you can really expect. So, what are the best and worst performing cars?.....
Tests are conducted in a laboratory under tightly controlled conditions to ensure repeatability within 1%, but they are based on a real-world route that takes in town, rural and motorway driving.
The results reflect what's achievable if you’re driving gently and sticking to speed limits, but aren’t resorting to any unrealistically slow acceleration or special 'hypermiling' techniques. As a result, True MPG is not only fully reflective of real-world performance, but much more realistic than the official government fuel economy figures that car manufacturers have to quote.
Below we count down the top 10 performers – and reveal the 10 cars that used the most fuel. The 10 most fuel-efficient cars tested:
The best plug-in hybrid cars in 2021
Plug-in hybrids can reduce fuel consumption to an absolute minimum, but which models are the best all-rounders and which should you avoid?...
Vauxhall Mokka-e long-term test review
Vauxhall’s smallest SUV is back and is now available as an electric car for the first time. We’re finding out what it’s like to live with