Gas-powered cars and diesel trucks remain the state’s largest sources of smog and soot despite decades of cutting emissions.

Cleanliness is next to godliness, even when you're on the road. Our expert provide clean car tips to help make your ride just ...

The governors in the new Clean Cars Coalition closely (but not exactly) track the group of “section 177” states which follow California Air Resources Board’s clean air rules.

While fuel-injector cleaning is often recommended by shops and dealer service centers, it probably isn’t necessary unless it’s correcting a running problem. In many cases, just using a quality ...

California Gov. Gavin Newsom (D) announced his intentions Friday to help launch a multistate, clean-car coalition after the Senate voted to upend the Golden State’s stricter-than-federal ...

Delaying the implementation of the Advanced Clean Cars and Clean Trucks initiatives for two years allows Maryland to reassess the policy with a clearer, more level-headed approach.