Many thanks for your e-mail. That is very interesting because another motorist won a case against Mercedes for the same reason in Germany. His case was heard at a German Regional Court and set a case precedent. But, if yours was merely heard on the Small Claims Track of the County Court, it sets no precedent binding on other courts. However, it's still a step in the right direction. The EC requires manufacturers to lab test the fuel economy and CO2 of their vehicles in a prescribed standardised way and to publicise only the resultant figures, on which cars are now taxed. But cars can be optimised for the tests and the results often bear no relation to what real drivers can achieve in real life. More owners are going to start taking legal action and the EC will be forced to make its tests more realistic, but the downside is that this will put up CO2 based taxes.