QUARG's chairman Prof Roy Harrison said: 'While diesel cars are not a very major player at the moment their emissions contribution will increase in importance as the percentage of diesels in the country's fleet increases.'
He said the latest report did not recommend sanctions against diesels and added: 'All we do is set out the source of particles and refer people back to our earlier report. That says if we see an increase in the number of diesels and an increase in their market penetration the problem will get worse. But it is up to the Government to decide policies to do something about that. We are simply telling them that diesels are a problem.'