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Muffler & Exhaust Shops in St Louis, MO

8 of the 280 auto repair shops we list in St Louis have muffler and exhaust work.

A loud exhaust, a rattle under the car or a failed emissions test often comes down to the exhaust system, and muffler shops can bend and weld pipe on the spot. Every shop here names muffler, exhaust or catalytic converter work in its business name, listing or on its own website.

  1. Sal's Auto Care & Detail

    4474 Chippewa St, St Louis, MO 63116

    Transmission repairMuffler & exhaustA/C repairLoaner or shuttle
    Call Website Directions

  2. Spirit One Automotive

    7900 Gravois Rd, St Louis, MO 63123

    State inspectionTransmission repairDiesel & truckMuffler & exhaustTowing
    Call Website Directions

  3. CarSmart Auto Service

    7921 Watson Rd, St Louis, MO 63119-5410

    Muffler & exhaustA/C repair
    Call Website Directions

  4. Emge's Carcraft Auto Repair

    6235 Gravois Ave, St Louis, MO 63116

    Muffler & exhaustBody & collisionFree estimates
    Call Website Directions

  5. AUTO SHOP

    2616 Shenandoah Ave, St Louis, MO 63104-2312

    Smog & emissionsState inspectionMuffler & exhaustA/C repairBody & collision
    Call Website Directions

  6. Don's Muffler Clinic

    2923 Cherokee St, St Louis, MO 63118

    Muffler & exhaust
    Call Directions

  7. Matt's Muffler & Brake

    10080 Halls Ferry Road, St Louis, MO 63136

    Muffler & exhaust
    Call Directions

  8. Kunkel's Mufflers

    1516 N 17th St, St Louis, MO 63106

    Muffler & exhaust
    Call Directions
Ask for a look underneath first. Many leaks can be fixed by replacing one section or a gasket instead of the whole system. If your catalytic converter is replaced, ask whether the part is legal in your state — California and some other states require CARB-approved converters.

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Muffler & Exhaust Shops near St Louis

Good to know

How much does a muffler replacement cost?

Replacing a muffler typically costs about $100–300 at an independent shop; a full exhaust system or a catalytic converter costs considerably more, depending on the vehicle.

Is it legal to drive with a loud exhaust?

Most states have laws against excessive exhaust noise and against removing emissions equipment, so a hole in the exhaust can lead to a ticket or a failed inspection.