Need a Smog? Come visit the experts at Lo Sieu Smog - Star Certified. Conveniently located off the 805 freeway and 5 minutes from the 15. We get the job done and get you on your way. We provide the best smog checks in town. Our team of smog technicians are great at their job. We pride ourselves with staying up to date and being aware of the latest techniques and practices. In this way, our customers always get more than just quality, they get complete customer satisfaction!