After testing 282 cars here's 'What?' the experts found to be most economical...
Last year What Car? fuel testers assessed 282 cars for their real-world fuel economy.
That's a lot of cars and a huge amount of driving to be able to measure differences between models of as little as 0.1mpg in fuel consumption.
The real-world figures were lower than those officially quoted, as you would expect.
The gap between official and every-day driving varied from 22.0mpg to 63.2mpg.
The biggest gap was 39pc. And while that is a stick some would use to beat car makers with, it is relevant that the testers point out that the real-world returns are still highly impressive.
Out in front in the real-world tests came the Seat Leon 1.6 TDI SE Ecomotive Technology (official performance 85.6mpg: True performance 63.2mpg).
The testers say that despite the gap between official figures and what they calculated, 63.2mpg is a "good return for everyday driving."
The Citroen DS3 1.6 e-HDI Airdream DSport Plus (74.4mpg v 63.0mpg) was not far behind at all - just 0.2mpg. The reviewers say the car's style matches its economy.
Next up was the MINI Cooper D (80.7mpg v 62.6mpg). The testers say: "The latest version of the hatch has proved to be one of the most economical cars we've tested".
The Skoda Octavia Greenline III TDi followed on 61.9mpg (official 88.3mpg).
The testers say: "If you want to carry a lot of stuff and not spend a huge amount of fuel, then the Skoda Octavia is your best bet. "Go for the Greenline model as tested here and you should be looking at real-world economy of 61.9mpg."
Since Honda introduced the 1.6-litre diesel into their lineup they have been breaking all sorts of motoring records.
Here, the Civic 1.6 i-DTEC EX+ was clocked in at 61.8mpg (official 72.4mpg).
The testers say it is the closest of all cars at the top of their list to its official economy figures.
The Peugeot 308 1.6 Allure BlueHDi (official 88.3mpg, true 60.8mpg) was just 1mpg behind.
And those who carried out the tests say: "The Peugeot 308 might not be as big as the Octavia, but it is another car on this list with a generous boot.
"Again it is a 1.6-litre diesel that is the one to turn to if you want to get maximum economy.
...And here are the three worst fuel-guzzlers in the survey
THE dubious distinction of worst performance goes to the Range Rover Autobiography LWB V8 Supercharged (official 22.1mpg: true 22.0mpg). \
But at least the official figures are exceptional in their reflection of real-world driving with a mere 0.1mph of a difference.
At this level, fuel consumption has to be of secondary nature - if you have to ask then can you afford the car in the first place?
The same applies to the Aston Martin N430 V8 S (official 21.9mpg: True 23.2mpg). But this is a turn-up for the books as the V8's official figure of 21.9mpg is lower than what the testers managed (23.2mpg).
Is there a bit of reverse psychology going on there?
In third place was the Porsche Macan Turbo (30.7mpg v 23.4mpg real world) and the testers are disappointed, commenting: "The Aston Martin and the Range Rover do at least get close to their official economy ratings."