Green Smog Check is the right place to go. We provide official SMOG CHECK for all vehicles including trucks, SUVs, and Gross Polluters using our cutting-edge BAR-97 Emission Inspection System (EIS) required by the State of California. The inspection includes a visual, functional, and tail-pipe emissions test. Certain vehicle emissions testing requires the use of a dynamometer for Acceleration Simulation Mode (ASM) or loaded-mode test. The ASM simulates actual driving conditions and allows for more precise testing for CO, HC, and NOx – the three most harmful pollutants emitted by motor vehicles. We transmit the Smog Certificate for you electronically so you do not have to mail it! We are conveniently open 7 days a week!