Diesel engine vehicles in London

MQT on 2013-05-22
Session date: 
May 22, 2013
Question By: 
Jenny Jones
City Hall Greens
Asked Of: 
The Mayor


Thank you for the answer to my question 144/2013, which referred me to a very interesting report but failed to answer my question. I find it surprising that you cannot give me a direct answer to my question. What proportion of cars in London were diesel vehicles in 2012 and has this continued to grow from previous years?


Answer for Diesel engine vehicles in London

Answer for Diesel engine vehicles in London

Answered By: 
The Mayor

In calculating the emissions from cars for the London Atmospheric Emissions Inventory 2010 (LAEI) national assumptions on the proportion of diesel cars on urban roads are used. This follows the same methodology used in the national inventory (NAEI). This estimated the proportion of kilometres driven by diesel cars in 2012 to be 41 per cent, up from 32 per cent in 2008. As part of the continual improvements programme for the LAEI I intend to look at incorporating a London specific diesel/petrol split into future versions.