DETROIT/WASHINGTON, Dhu-AlHijjah 8, 1436, Sep 22, 2015, SPA -- When the International Council for Clean Transportation (ICCT) commissioned researchers at West Virginia University to test diesel car emissions in 2013, the group expected to find that diesel cars sold in the U.S. emitted fewer pollutants than cars sold elsewhere because they had to meet tougher standards, ICCT officials told Reuters on Monday. Instead, after testing a 2012 Volkswagen Jetta and a 2013 VW Passat, researchers were "surprised" when the results showed the opposite: the two VW models displayed much higher levels of nitrogen oxide emissions than permitted by law, while a third test vehicle, a BMW X5, generally fell within permissible limits. -- SPA 03:34 LOCAL TIME 00:34 GMT www.spa.gov.sa/w