
Smog Check: Testing and Repairs
Smog Checks in Thornhill
*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 Auto Trust Technicians in Thornhill for Your Smog Testing and Repair
- Specialized smog check service station in Thornhill
- 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
Thornhill's Trusted Source for Smog Testing and Repair
Ask any car or truck owner in Thornhill who they recommend for smog testing and repair, and they will tell you Auto Trust Technicians.
Since 1989, the pro mechanics at Auto Trust Technicians 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 Auto Trust Technicians at 905-881-6361 to schedule an appointment today or stop by our location at 79 Green Lane in Thornhill, Ontario, L3T 6K6.
What Does Auto Trust Technicians 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, Auto Trust Technicians 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, Auto Trust Technicians will provide you a vehicle inspection report showing your vehicle's results and will electronically send the smog certificate to DMV.



DeLenn Burrows, 03/24/2022these wonderful souls saved my life (okay not literally but they saved my road trip). My car broke down the day before I had to leave for a long drive to head way up north and these wonderful individuals were able to fit me in ASAP and get my car fixed and safe to make the trip! I had no delay because of them!