Reveals that the efforts made by multiple Transport Task Group (TTG) countries to promote and support policies and programs—including stringent tailpipe emissions standards, fuel economy standards, low sulfur fuels, and green freight programs—are in good alignment with the long-term perspective and pathways of the Transport Task Group defined in the G20 Energy Efficiency Leading Programme. Realizing the immense opportunity to promote energy efficiency in their economies, G20 economies adopted an Energy Efficiency Action Plan that identified six focus areas for collaborative activity, including motor vehicles. More recently, G20 economies adopted the G20 Energy Efficiency Leading Programme, which established, for the first time, a multilateral definition of “world-class” clean vehicle and fuel standards and encouraged all G20 nations to develop relevant policy goals and milestones. These suggested world-class standards include Euro 6/VI or equivalent tailpipe emission standards for light- and heavy-duty vehicles, fuel quality standards with maximum sulfur limits of 10 to 15 ppm, a 50% reduction of fuel consumption for new light-duty vehicles (LDVs) by 2030 based on a 2005 baseline, and a 30% reduction of fuel consumption for new heavy-duty vehicles (HDVs) by 2030 based on a 2010 baseline. In addition, countries were encouraged to support green freight programs that encourage the adoption of cost-effective energy efficiency improvements for in-use trucks.