LONDON--(BUSINESS WIRE)--European auto manufacturers have made considerable progress in reducing nitrogen oxide (NOx) emissions, but experts at Emissions Analytics note that challenges remain. The European Commission will require “real world” vehicle emission tests beginning in 2017. Emissions approval for passenger cars in Europe will then include mandatory on-the-road tests using a portable emissions measurement system – the first time NOx will be measured outside of a laboratory. Although Eu
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