Welcome to Superior Smog. We are Star Certified Smog Check Station, located on 23rd Street in Richmond, CA. We offer our customers honesty, efficiency and accuracy in all aspects of our business. Our experienced and courteous smog technicians are always on duty during normal business hours. We do all smog checks required by the DMV! Save your time and money. First come first serve. No appointment needed! Smog check takes approximately 10 – 15 minutes. Superior Smog the number one destination for Smog Check Richmond, Discount Smog Richmond, Coupon Smog Richmond.