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Car manufacturers have hit back at the recent spate of negative comments about diesel vehicles, saying that the latest incarnations are “the cleanest in history” and “light years away from their older counterparts”.
The Society of Motor Manufacturers and Traders (SMMT) said diesel cars could play an important role in helping improve air quality in towns and cities and in tackling climate change.
A government report published in April 2016 showed that diesel cars being sold in the UK emit an average of six times more nitrogen oxide in real-world driving than the legal limit used in official tests.
Since then, a number of schemes have been mooted to encourage drivers to give up diesel vehicles, including the possibility of a government-run scrappage scheme.
Last week, the London mayor, Sadiq Khan, announced a new charge on diesel cars driving into the city. Under the plans, drivers of diesel cars that are more than four years old in 2019 and petrol cars that are more than 13 years old will pay £12.50 a day on top of the congestion charge in an attempt to cut air pollution.
In a list entitled “10 facts you need to know about diesel”, the SMMT said that some recent reports had failed to differentiate between older diesel cars and those on sale today, which comply with Euro 6 emissions standards, adding: “This is unfair and dismissive of progress made.”
The organisation said the latest vehicles featured special filters and technology that converted most of the nitrogen oxide (NOx) from the engine into harmless nitrogen and water before it reached the exhaust. These cars will be exempt from the new London charges.
It added: “Contrary to recent reports, diesel cars are not the main source of urban NOx. In London, gas heating of homes and offices is the biggest contributor, responsible for 16%. While road transport as a whole is responsible for around half of London’s NOx, diesel cars produce just 11%, although concentrations will vary at different times depending on congestion.”
It said British car buyers registered almost 250,000 new diesel cars in March, more than in any month in history.
- Mike Hawes, the SMMT’s chief executive, said: “Euro 6 diesel cars on sale today are the cleanest in history. Not only have they drastically reduced or banished particulates, sulphur and carbon monoxide but they also emit vastly lower NOx than their older counterparts – a fact recognised by London in their exemption from the Ultra Low Emission Zone that will come into force in 2019.”
- He added: “In addition to their important contribution to improving air quality, diesel cars are also a key part of action to tackle climate change while allowing millions of people, particularly those who regularly travel long distances, to do so as affordably as possible.”
guardian.co.uk © Guardian News & Media Limited 2010
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