In N Go operates as a STAR-certified smog test-only station on Lakeside's Woodside Avenue, holding Bureau of Automotive Repair authorization to conduct California emissions inspections since 2004. The test-only designation means the station cannot perform mechanical repairs, ensuring an unbiased pass-or-fail result — a separation of testing and repair that used-vehicle dealers at the same Woodside address, including Vanguard Auto Sales, rely on for change-of-ownership compliance. Vehicles that fail at a test-only facility must be repaired at a separate BAR-licensed shop and return for retesting, a two-step process that adds accountability to the state's emissions program. The station handles both standard biennial smog checks and DMV-directed tests, routing any structural or undercarriage issues identified during visual inspection to collision specialists on nearby streets including Skyler's Auto Body & Collision Repair on Short Street. OBD-II port scanning checks readiness monitors for catalytic converter efficiency, evaporative-system integrity, and oxygen-sensor response within the BAR-97 protocol's rolling-idle test cycle.