Smog Check

If your vehicle needs a smog check, SpeeDee is here to help. Our certified technicians perform fast, reliable emissions tests at participating locations so you can get back on the road with confidence.

Find Smog Check Service Near Me

A white car is positioned on a dynamometer in an automotive workshop, with an emissions testing machine connected to its exhaust.

What We Do

Smog Certification & Emission Testing You Can Trust
from Certified SpeeDee Technicians

Smog Check & Certification

We’ll test your vehicle’s emission system to ensure it meets local or state standards. If your vehicle passes, we’ll provide the documentation you need, fast and hassle-free.

Pre-Check Support

Not sure if your car will pass? We can inspect for common issues like check engine lights, faulty sensors, or leaks, so you’re not caught off guard when it comes time to test.

How Smog Checks & Emission Testing Work

Measure the Pollutants Your Vehicle Emits

Smog checks and emissions testing ensure your car meets state and federal air quality standards.

Our technicians review key systems that affect emissions, like the catalytic converter, oxygen sensors, and fuel system, to ensure everything is functioning properly.

A person wearing black gloves inserts a probe into a car’s exhaust pipe, likely conducting an emissions test in a garage setting.

We perform a certified smog check using state-approved equipment. It’s quick, precise, and fully compliant with your state’s requirements.

A technician stands at a computer workstation while a car, positioned on a lift with a wheel alignment tool attached to its front tire, receives expert Alignment Services.

If you pass, we’ll issue your smog certificate right away. If not, we’ll walk you through the next steps, no pressure, just honest advice.

A mechanic in uniform holds a clipboard and smiles while discussing a check engine light issue with a woman in a blazer inside an auto repair shop.

Your Guide to Smog Checks

Tips, Timing & Common Questions

If your vehicle registration renewal notice specifies an “Emission Test Required” or “Smog Certification Required,” then it’s time for a visit.

A mechanic in a Speed Auto Repair shirt shows a clipboard to a customer standing beside a car in a garage.

Smog checks are required in areas where air pollution levels are a concern. They help reduce harmful emissions by making sure your vehicle meets local environmental standards. Each state, and sometimes individual counties, sets its own testing rules. It might feel like a hassle, but it’s all about keeping the air cleaner for everyone.

Cars lined up at a red traffic light on a multi-lane road, with autumn trees and traffic signals in the background—perfect timing to think about essential car care like clutch replacement.

In most states, smog checks are required every one to two years, typically when you renew your vehicle registration. However, it depends on your state’s regulations, the age of your vehicle, and even your county. Some newer vehicles may be exempt for the first few years. When in doubt, check your registration renewal notice or visit your state’s DMV website for details.