Five of the best wallet-friendly green machines

Oil prices are dropping, a barrel of the black stuff costing almost half what it did a couple of months back, but don't expect the prices to tumble at the forecourts. To save fuel you should perhaps invest in a more fuel efficient car.
The official EU fuel economy figures are often misleading, as it is difficult to get anywhere near the consumption figures that manufacturers quote for their cars. Which? has decided to help by testing the 100 top so-called eco-cars for its Which? Complete Guide to Greener Driving. The tests included a simulated motorway run for a more accurate representation of a car's true fuel economy. Our Five of the Best highlights the most miserly users of fuel that money can buy.