Diesel Vehicle Engines

MQT on 2014-10-22
Session date: 
October 22, 2014
Question By: 
John Biggs
Labour Group
Asked Of: 
The Mayor


Should these, given the apparent impossibility of removing particulate emissions, be banned?


Answer for Diesel Vehicle Engines

Answer for Diesel Vehicle Engines

Answered By: 
The Mayor

It is estimated that diesel vehicles are responsible for around 90 per cent of road based transport emissions. To address this I have developed proposals for an Ultra Low Emission Zone, consultation on which will begin on 27th October 2014.

ULEZ will require most vehicles to meet a Euro 6/VI diesel standard (or an equivalent Euro 4/IV for petrol vehicles). For heavy vehicles, Euro 6 will reduce NOx emissions by between 80 and 90 per cent compared to Euro 5/V diesel vehicles. I have also amended incentives such as the Ultra Low Emission Discount to ensure that more polluting diesel vehicles are no longer eligible, lobbied Government for a change to fiscal incentives and proposed a national diesel scrappage scheme.

I believe that this approach is more sensible, fairer and cost-effective than an outright ban, while still delivering the public health improvements London needs. A ban may also fall foul of European Union single market rules.