This is all about location and convenience. Stop in, smog, register, get some gas at the Sinclair next door, and with our coupon, a free car wash. Price is probably about $5 more than the stand alone smog shop a couple of miles further away (-1 star), but this got the job done. Attendant asks for tips so plan accordingly (-.5 star). If you get there and there's a line there is really no place to wait in line that makes sense. (-.5 star).