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

If policymakers are to succeed in their efforts to foster economic growth, improve public health, and protect the environment, they need to know which policies work, which don’t, and why.

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.