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Smog Check & Emissions Testing Stations in Rockville, MD

3 of the 188 auto repair shops we list in Rockville 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. Rockville Auto & Truck Services

    108 Crabb Ave, Rockville, MD 20850

    Mon–Fri 8:00am–5:00pm

    Smog & emissionsState inspectionDiesel & truckMuffler & exhaustFree estimates
    Call Website Directions

  2. Superior Auto Service

    12298 Wilkins Ave, Rockville, MD 20852-1861

    Mon–Thu 7am–6pm, Fri 7am–5pm, Sat–Sun closed

    Smog & emissionsState inspectionTransmission repairMuffler & exhaustA/C repairLoaner or shuttleTowing
    Call Website Directions

  3. Rockville Auto & Truck Services

    14716 Southlawn Ln, Rockville, MD 20850-5328

    Smog & emissionsState inspectionDiesel & truckMuffler & exhaustFree estimates
    Call Website 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.

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Smog Check & Emissions Testing Stations near Rockville

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.