Stricter OBD rules: In 2026, all applicable OBD-II readiness monitors must be set for a vehicle to pass, ending long-standing exemptions. Impact on drivers: More vehicles may initially fail smog ...

Q: Many years ago, California began exempting older cars from having to complete a smog check to renew the vehicle registration for the year, Roy Saldin of Moreno Valley said. “They seemed to be doing ...

OPINION: With diesel prices spiking 45% higher than a month ago, what was a health and pollution problem is now barreling California's way as an economic problem, too.