Nitrogen oxides are at illegally high levels in many British cities and the government estimates this pollution is responsible for 23,500 premature deaths a year Photograph: Ingo Wagner/Associated Press

Health experts lambast ‘deceitful’ carmakers as data suggests 97% of vehicles fail to meet NOx emissions standards in real-world conditions

 Ninety-seven percent of all modern diesel cars emit more toxic nitrogen oxide (NOx) pollution on the road than the official limit, according to the most comprehensive set of data yet published, with a quarter producing at least six times more than the limit.


The Department for Transport has commissioned research on how existing or new technology can be used to detect DPF removal by measuring exhaust fumes. Photograph: Alamy

Government urged to crack down on rogue practice of garages removing compulsory diesel particulate filters from vehicles

More than a thousand diesel cars have been caught without an essential pollution filter that traps deadly particles, according to government figures. But experts warn the rogue practice of removing the filters, which contributes to air pollution-related deaths, could be far more widespread.

People are increasingly being warned about the dangers of diesel pollution, but how much are we actually exposed to? Tim Johns tried to find out.

Waiting for my train one day, standing on the concourse, it occurred to me that there seemed to be rather a lot of fumes coming from the idling diesel engines.

How much diesel pollution was I breathing in?

I decided to undertake an experiment for The Jeremy Vine Show on BBC Radio 2 to find out how much I was being exposed to on a daily basis, in different locations and on different modes of transport.

Emissions from 2008–2015 VW diesel vehicles fitted with ‘defeat devices’ linked to 59 premature deaths


In September 2015, the United States Environmental Protection Agency (EPA) alleged that Volkswagen (VW) violated the US Clean Air Act by fitting ‘defeat devices’ in their light-duty diesel vehicles to falsify the results of emissions tests. According to a study assessing the potential impact of this decision, an extra 59 early deaths in the US are likely to be caused by exposure to PM2.5 and ozone.



Hydrocarbons are precursors to hazardous air pollutants including ozone and particulate matter. Hydrocarbons from diesel make up over 50% of all hydrocarbons in the air in London, a new study has found. The authors also estimate that they contribute up to half of total ozone production potential in London, and say future air quality control strategies must focus more on these pollutants.


BRUSSEL 19/10 - Het Belgische dralen om haar bevolking tegen dieselgif te beschermen, staat in schril contrast tot de Amerikaanse, Franse en Engelse actiebereidheid. Enkele quotes uit het rapport van de Department for Environment Food & Rural Affairs (DEFRA) en alleen al de titel ‘Tackling nitrogen dioxide in our towns and cities' (sept 2015) spreken boekdelen:


Mercedes-Benz, Honda, Mazda and Mitsubishi’s cars are shown to emit significantly more NOx pollution on the road than in regulatory tests

VW scandal: 3.6m European vehicles need major changes


Mercedes-Benz, Honda, Mazda and Mitsubishi have joined the growing list of manufacturers whose diesel cars are known to emit significantly more pollution on the road than in regulatory tests, according to data obtained by the Guardian.