What’s changing: Starting October 1, 2025, all OBD II readiness monitors must be set for a vehicle to pass a smog check, replacing previous allowance rules. Why it matters: The update ensures ...

California is updating its smog check rules to require all OBD-II readiness monitors to be complete for most vehicles, with very limited exceptions. These monitors verify that emissions systems are ...

Jay Leno’s star power wasn’t enough to persuade a California legislative committee to pass a measure to allow owners of classic cars like him to be exempted from the state’s rigorous smog-check ...

A California lawmaker is teaming with comedian and renowned automotive enthusiast Jay Leno to seek an expansion of smog check exemptions for classic cars. State Sen. Shannon Grove, R-Bakersfield, ...

The U.S. Environmental Protection Agency is proposing to partially halt California’s State Implementation Plan (SIP) relating to emissions controls for non-gasoline-combustion vehicles over 14,000 ...

State lawmakers in Sacramento have pumped the brakes on a bill pushed by comedian and famed car collector Jay Leno to make older cars exempt from smog checks in California. Bill SB 712, dubbed “Leno’s ...

Jay Leno’s star power wasn’t enough to persuade a California legislative committee to pass a measure to allow owners of classic cars like him to be exempted from the state’s rigorous smog-check ...

Should old cars get a break from California’s smog check laws? Former Tonight Show host and avid car collector Jay Leno thinks so. He’s thrown his support behind a bill in the state legislature that ...