PRINT SMOG COUPON -Vehicles registered in the state of California are required to obtain a smog certification every two years, unless exempt. Nearly 40 counties within the state require smog certification, which can be obtained by bringing the car to a California Department of Motor Vehicles (DMV) smog check station. DMV Smog Check Stations There are currently more than 7,000 California DMV smog check stations which can inspect your car and provide the necessary certification. The California DMV website offers you the option to search smog …