The emission measurement procedure using the “free acceleration” method has caused many diesel vehicle owners to worry about ...

A routine emissions test turned into a catastrophic engine failure for one Hyundai Palisade owner after a dealership ...

Across the United States, the rules for checking tailpipe pollution are quietly shifting, even as climate targets grow more ambitious and electric vehicles grab headlines. States are carving out ...

In recent days, the implementation of the National Technical Standard on emissions for automobiles, especially those using ...

After years of compliance, the Idaho Department of Environmental Quality wants to get rid of Ada County’s emissions testing program, claiming the usefulness of the program has run out. Following the ...