Hermanos Test Only specializes in smog checks in Highland, CA. We perform all DMV smog, including diesel, hybrid, STAR directed smog check and smog check near me. Customer satisfaction is our top priority and we pride ourselves in offering the best service in town! We offer the best deals around and offer one FREE re-test! Stop by today for a smog while you wait in our free wifi waiting area. Or give us a call to schedule an appointment at Call now: (909) 863-1713.