Smog Tips

The smog abatement fee explained: who pays it, how it differs from the smog transfer fee and certificate fee, and where it appears.

What a California smog inspection includes: visual checks, functional tests, the OBD-II computer scan and tailpipe testing for older cars.

Who provides the smog certificate when a car is sold in California? Rules for sellers, buyers, newer cars and family transfers.

A lit check engine light is an automatic smog check failure. Learn what to do, common causes and how to get ready for a retest.

Why a car can fail a smog check with no check engine light: readiness monitors, battery disconnects and how to get ready.

Which vehicles are exempt from a California smog check? See exempt model years for gasoline, diesel, electric and newer vehicles.

Most California vehicles need a smog check every two years. See when a smog check is required and how to find your due date.

What goes into the cost of a California smog check: station price, state certificate fee and other fees, plus tips for saving money.

A passing smog certificate is valid for 90 days. Learn when to get your smog check so it does not expire before you renew or sell.