I have added the claimed NEDC combined fuel economy for some of the cars from the previous post. The last column shows the difference between the real world average compared to the official claimed fuel consumption as a percentage.
The car with the least difference between actual and claimed is the Mitsubishi Mirage 1.0 with a difference of 17.6%. As the weight of the car increases this difference increases markedly. The 1st and 2nd heaviest cars - Ford Focus and Ford Fiesta - show the greatest difference, 45% for both cars.
Buyers, caveat emptor!
