Euro V and Euro VI light-duty NOx regulatory limits compared to the U.S.: (a) About 55 to 60% NOx control will be needed for a Euro V (2009) diesel to hit the U.S. Bin 8 maximum allowable emission (45 states). For Bin 5 (50 states) nominally 85 to 90% NOx control is needed; (b) For Euro VI (2014), the requirement is 65 to 70% additional NOx reduction