Smog Certificates While You Wait - No Appointments Necessary - Foreign & Domestic Autos - Smog Check & Test Only Smog Inspections. Hours: Monday - Friday 8:00am - 6:00pm, Saturday 7:00am - 3:00pm. Specialists in Smog Certifications for Vehicle Registration; Fully Computerized - No Guesswork. Domestic & Foreign Autos.