RB Smog is Rancho Bernardo's only state certified test only center. We smog all makes and models from small compacts and sedans to mid size trucks and suv's. Serving Rancho Bernardo, Poway, Carmel mountain, Rancho Penasquitos, 4S Ranch, Del Dio's, Escondido, Scrips Ranch, Sabre Springs, Lake Hodges, Fair Banks, Rancho Santa Fe and surrounding areas. Conveniently located in the back of RB auto center facing the I-15 freeway.