VISTA SMOG AND TEST ONLY CENTER is Smog Check STAR Certified Smog Station in West Covina, CA 91790. Our smog check station providing DMV smog checks for vehicle registration & all DMV smog inspections including: smog check, smog test, smog inspection, smog certification, smog testing, emissions checks, Biennial smog inspection, Smog Test only, Out of state vehicle registration, Diesel smog inspection, Regular smog check, Registration renewal smog inspection, Gross polluter certification, Change of ownership smog test, Vehicle smog inspection, Hybrid smog, RV smog, Pass Smog with Discount Coupon, You MUST present coupon in MOBILE or PRINT prior to the smog test.