Cypress Union Smog Check in Cypress, CA 90630 is a STAR Smog check test only station. Our smog check station can certify smog checks for All vehicles registration & all DMV smog inspections including: smog check, smog test, smog inspection, smog certification, smog testing, emissions testing, Biennial smog inspection, Smog Test only, smog for Out of state vehicle registration, Diesel smog inspection, Regular smog check, Registration renewal smog test, Gross polluter certification, Change of ownership smog test, Vehicle smog, Hybrid smog, RV smog, Pass Smog with Discount Coupon, You MUST present coupon in MOBILE or PRINT prior to the smog test.