Want to do your bit for the environment? Then you'll be needing a Citroen C1, sir. Yes, that's right, Citroen's diesel version of the dinky C1 city car is even greener and more frugal than a Toyota ...
This is due to the car's extremely low mileage of around 500 a year, which implies only one or two fuel fills a year. The biodiesel element of current diesel fuel is hygroscopic and the moisture it ...