Will real-world emissions tests clean up diesel cars? | Karl Mathiesen

Ministers say the new tests put the car industry on the 'right path' but critics warn they have been weakened and their impact is uncertain

Ministers have assured Britons suffering illegally high levels of air pollution that the EU's new diesel car testing regime will put the motor industry on the "right path".

But do not breathe your sigh of relief too deeply. The new 'real world' tests, which will commence next year, have been weakened, delayed and their final impact remains uncertain, experts say.