Diesel cars made by Renault, Nissan, Hyundai, Citroen, Fiat and Volvo among others emitted far more NOx in more rigorous tests, research shows

Diesel cars made by Renault, Nissan, Hyundai, Citroen, Fiat and Volvo among others emitted far more NOx in more rigorous tests, research shows (theguardian.com)submitted 5 minutes ago by loading... via Pocket http://ift.tt/1N1poQF