Emissions testing laws are a crucial component in the fight against air pollution and climate change, yet these regulations vary significantly across the United States. Understanding these differences ...

Both SEMA and the trade group representing foreign automakers are cheering the EPA's announcement that it plans to effectively stop regulating car emissions. The United States Environmental Protection ...

Depending on where you live in the United States, emissions testing of old cars may or may not even be a thing. There are 28 states where at least some (though not necessarily all) are required to ...

Automakers are urging the EPA to quickly rewrite Biden-era vehicle emissions rules after backing a proposed two-year delay in ...

The Trump administration’s approach to rising new car prices is to scale back emissions regulations, a move that could affect the EV market. Officials aim to lower car prices by reducing emissions ...