A&G Smog Mascot
SANTA ROSA, CA · EST. IN THE COMMUNITY

The Air
Passes Here.

Fast. Honest. No hidden fees. All vehicle types. Walk-ins always welcome.

Call (707) 526-2233 Find Us
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Chapter 01
What Is A Smog Check?

California Requires It.
We Make It Easy.

Every vehicle on California roads contributes to what we breathe. A smog check tests your car's exhaust — making sure it isn't releasing more than its share of pollutants into the air above Santa Rosa.

Without Testing
Toxic exhaust
NOx and VOCs react with sunlight to create ground-level ozone — what you see hanging over the city on hot days.
After A&G Tests You
✓ Certified Clean
Your vehicle meets California's strict standards. You're legal, you're clear, and the air is better for it.
Chapter 02
California Law

Every 2 Years.
No Exceptions.

Most California vehicles require a smog inspection every two years, or when you sell your car. Skip it and your registration renewal gets blocked. It's that simple.

The good news: at A&G, it takes 15 to 30 minutes. Walk in. Drive out. Done.

2
Year Requirement
30
Minutes Max
7
Test Types Covered
Chapter 03
Who We Are

Santa Rosa's
Most Trusted
Smog Shop.

313 verified reviews. 4.6 stars. No hidden fees. We've been part of this community — testing every type of vehicle, treating every customer with respect, and getting people back on the road fast.

🇲🇽   Se Habla Español
Rocky the A&G Smog Mascot

Rocky — A&G's Smog Expert

Chapter 04
Every Test. Every Vehicle.

We Test Them All.

🔄
Bi-Annual Smog
🧪
Test-Only
🚛
Diesel Smog
⚠️
Gross Polluter
🗺️
Out-of-State
🔑
Change of Owner
🚗
Regular Smog
Chapter 05
How It Works

Three Steps.
Out the Door.

01

Walk In

No appointment needed. Pull up to 440 Dutton Ave #5. We're open Monday through Friday 8am-6pm, Saturday 8am-5pm.

02

We Test

15 to 30 minutes for most vehicles. We check your exhaust, run your OBD diagnostics, and verify your catalytic converter is doing its job.

03

You Pass

Certificate in hand. Registration renewed. No hidden fees, ever. See you again in two years — or sooner if you're selling.

Find Us
Ready?

Walk In Today.

Address

440 Dutton Ave #5
Santa Rosa, CA 95407

Phone

(707) 526-2233

Hours

Mon–Fri 8am–6pm
Saturday 8am–5pm

Call to Book Get Directions