816 Murdock St
Sedro Woolley, WA 98284
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Fax: 360-855-0830



7:30AM - 5:30PM
7:30AM - 5:30PM
7:30AM - 5:30PM
7:30AM - 5:30PM
7:30AM - 5:30PM
7:30AM - 4:00PM


Smog Check: Testing and Repairs

Smog Checks in Sedro Woolley

*Please bring your DMV renewal notice indicating a Smog Check is required with you and your Smog Check certificate will be electronically sent to the DMV.

Why Choose Sedro-Woolley Auto Parts in Sedro Woolley for Your Smog Testing and Repair

  • Specialized smog check service station in Sedro Woolley
  • Smog test and repair options to minimize cost and maximize convenience
  • Smog failure diagnosis with onsite repair and smog retesting
  • State-of-the-art automotive smog repair systems and tools
  • We participate in the California State Free Smog Testing Program
  • Ask about smog repair discounts and coupons

Sedro Woolley's Trusted Source for Smog Testing and Repair

Ask any car or truck owner in Sedro Woolley who they recommend for smog testing and repair, and they will tell you Sedro-Woolley Auto Parts.

Since 1938, the pro mechanics at Sedro-Woolley Auto Parts have provided quick smog testing and cost-effective smog repairs when needed. Start a maintenance service plan with us that can help prevent high-cost repairs to your emission system. We are professional, honest, and friendly. For five star, cost conscious smog testing and repair services call Sedro-Woolley Auto Parts at 360-855-0341 to schedule an appointment today or stop by our location at 816 Murdock St in Sedro Woolley, WA, 98284.

What Does Sedro-Woolley Auto Parts Do During a Smog Check?

We inspect your car or truck's emissions-control equipment to measure the number of pollutants your vehicle is emitting.

First, Sedro-Woolley Auto Parts will analyze your car or truck's OBD computer system, emissions-control system, and check engine light codes for standard warnings that your emissions system is no longer functioning properly.

Next, we will inspect your car or truck's gas cap, ignition timing, exhaust gas recirculation system, fuel, and evaporative system.

Finally, we will perform a Tailpipe Emissions Inspection which measures the type and quantity of any pollutant emitted from your vehicle's tailpipe.

Did You Pass Your Smog Test?

Great! If your vehicle passes a smog check, Sedro-Woolley Auto Parts will provide you a vehicle inspection report showing your vehicle's results and will electronically send the smog certificate to DMV.