The plans were first floated last year and are intended to help achieve the Mayor of London’s ambitious goal of a 60% cut in CO2 by 2025 (ENDS Report 386, p 39 
).
From 6 October 2008, cars emitting more than 225 grams per kilometre of CO2 will have to pay £25 to enter London’s congestion charge zone. Cars with emissions between 121-225g/km would continue to pay the standard £8 charge. From 4 February 2008, cars emitting less than 120g/km and complying with the Euro IV standard for other air pollutants will go free.
