Rancho Auto Service SMOG CHECK EL CAJON – SMOG COUPON: $39.75 Smog Check with Smog Check Coupon Must Present Coupon in Mobil Format.  SMOG CHECK- STAR STATION: SMOG CHECK: $39.75 cars with smog check coupon We can Smog Check all cars, SUVs and trucks. OUT of STATE Smog Checks Change of Owner Smog Check Gross Polluter …