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Smog Check & Emissions Testing Stations in St Peters, MO

3 of the 46 auto repair shops we list in St Peters 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. Complete Auto and Exhaust

    214 McMenamy Rd, St Peters, MO 63376

    Mon-Fri 8am-5pm

    Smog & emissionsTransmission repairMuffler & exhaust
    Call Website Directions

  2. Salt River Automotive LLC

    5590 Salt River Rd, St Peters, MO 63376

    Smog & emissions
    Call Website Directions

  3. Speedemissions [Missouri]

    3895 Veterans Memorial Pkwy, St Peters, MO 63376-6416

    Smog & emissions
    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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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.