Diesel cars can improve air quality, claims motor industry group

Car makers’ group SMMT claims latest vehicles are the ‘cleanest ever’ and vital in fight against climate changeCar manufacturers have hit back atthe 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