While you should still check the station's operating hours before visiting, a no-appointment option can make it easier to fit emissions testing into your day.
If your California registration renewal requires a STAR smog inspection, completing the certification at an appropriate STAR station is an important step toward keeping your vehicle registration current.
Clean Truck Check requirements can involve periodic emissions testing, and certain vehicles may also be subject to additional requirements depending on their circumstances.
If you recently moved to California with a vehicle that was previously registered in another state, you may need to complete a California smog inspection before finishing the registration process.