The final report of the Mashelkar Committee on auto fuel policy varies in some significant respects from the interim report it submitted earlier this year. By virtue of the new recommendations in the final report, the overall policy towards regulating vehicular emissions has been made more stringent. The interim report had recommended the introduction of Euro III norms in the entire country for all new vehicles by 2010. But the final report has called for the introduction of Euro IV norms in 11 Indian cities by the same date.