This briefing paper is a technical summary for policy makers of the status of hybrid vehicle development in the United States. Both sales of hybrid vehicles and the number of hybrid

The introduction of mandatory CO2 standards for passenger cars in the European Union led to a significant decrease in the level of CO2 emissions for new vehicles, as well an increased deployment of vehicle efficiency technologies.

This study, a meta-analysis of PEMS data from EU (Euro 6) and US (Tier 2 Bin 5/ULEV II) diesel passenger cars, documents the wide discrepancy that exists between official certification or type-approval emissions of nitrogen oxides (NOx) from new diesel passenger cars and actual NOX emissions from those vehicles during real-world, everyday operat

This paper compares fuel consumption / CO2 values of passenger cars from different sources and aims at quantifying the discrepancy between laboratory type-approval values and real-world values, including a retrospective analysis for the years 2001-2011 to determine if the gap between the two datasets has increased over time.

There are great opportunities around the globe to reduce conventional pollutant emissions from light-duty vehicles (LDVs), with positive effects on air quality and public health. This report directly addresses the cost to LDV manufacturers of deploying technology in order to meet more stringent emission regulations.