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Smog Check & Emissions Testing Stations in Union City, CA

3 of the 19 auto repair shops we list in Union City have smog checks or emissions tests.

Not every repair shop is licensed to test emissions, and a map search for a smog check mixes test stations with parts stores and dealerships. Every station here names smog checks or emissions testing in its business name, its listing category or on its own website.

  1. Bay Star Auto Care

    1275 Atlantic St, Union City, CA 94587

    Mon–Fri 8am–6pm, Sat 8am–3pm, Sun closed

    Smog & emissions
    Call Website Directions

  2. Union City Smog Check

    33365 Mission Blvd, Union City, CA 94587

    Mon–Fri 9:30am–5pm, Sat 9:30am–3pm, Sun closed

    Smog & emissions
    Call Website Directions

  3. Quik Smog Union City STAR Station

    2601 Decoto Rd, Union City, CA 94587

    Smog & emissions
    Call Directions
Bring your registration renewal notice. States that require emissions testing usually print the type of test on it. In California, a notice that says “STAR station required” means only a STAR-certified station can do the check, and test-only stations check cars but do not repair them.

More in Union City and California

Smog Check & Emissions Testing Stations near Union City

Good to know

How much does a smog check cost?

Prices depend on the state and the station. In California a smog check usually costs about $30–70 plus the state certificate fee; in states that run their own emissions programs the fee is often a flat amount set by the state.

What happens if my car fails the emissions test?

You get a report with the reason for the failure, and the car needs repairs before a retest. Many states give a free or discounted retest within a set number of days, and some offer repair assistance or waivers when repair costs pass a limit.