California
Vallejo

AO SMOG

Smog inspection station
Opens at 10:30 AM
4.7 (67 reviews)
1975 Broadway Ste A, Vallejo, CA 94589
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About

AO SMOG is a trusted provider of smog check and emissions testing services in Vallejo, California. The business offers reliable vehicle inspections to help customers pass state emissions requirements. Customers have praised the quick and efficient service, with many reviews highlighting professionalism and reasonable prices. The staff's helpfulness and honesty contribute to a positive experience. Whether you need a simple smog check or repairs like catalytic converters and O2 sensors, AO SMOG can assist. Their focus remains on emissions-related services, ensuring vehicles meet California standards without unnecessary delays or expenses.

smog check vehicle inspection OBD testing Vallejo California emissions testing

Services Offered

smog check
Vehicle Inspection
OBD-II Diagnostics
Check Engine Light Diagnosis
Catalytic Converter Service
Exhaust Repair
O2 Sensor Replacement

What Customers Say

Review Summary

Customers appreciate AO SMOG for their fast and reliable smog check services in Vallejo, California. Many reviewers mention the helpful and friendly staff, which makes the testing process straightforward. Pricing is considered fair, and the thorough approach to inspections helps ensure vehicles pass emissions tests. While some note that service times can vary during peak hours, overall, clients find the experience stress-free and trustworthy. The reputation for honest assessments and affordable prices keeps customers returning and recommending AO SMOG to friends and family.

1975 Broadway Ste A, Vallejo, CA 94589 +1 707-644-7664
Hours Closed
Mon 10:30 am–5 pm
Tue 10:30 am–5 pm
Wed • 10:30 am–5 pm
Thu 10:30 am–5 pm
Fri 10:30 am–5 pm
Sat Closed
Sun Closed
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Frequently Asked Questions

Discover quick and comprehensive answers to common questions about our platform, listings, and services.

AO SMOG is located at 1975 Broadway Ste A, Vallejo, California, near the recycling center.
AO SMOG offers smog check, vehicle inspections, OBD-II diagnostics, check engine light diagnosis, catalytic converter service, exhaust repair, and O2 sensor replacement.
Yes, AO SMOG provides emissions testing and smog check services in Vallejo, California to help vehicles meet state emission standards.
The business hours are Monday to Thursday from 10:30 am to 5 pm. It is closed on Sundays and Saturdays.
You can contact AO SMOG by phone at +1 707-644-7664 for inquiries or to schedule service.
Appointments are not required; they operate on a first come, first serve basis.
Service times are usually quick, often around 20 to 30 minutes, but may vary with customer volume.
Customers note that AO SMOG offers honest, professional, and affordable smog check services, making it their preferred choice in Vallejo.

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Making the Most of Your Visit to AO SMOG

Choosing the right emissions testing or smog check station in Vallejo, California can save you time, reduce stress, and help ensure your vehicle passes its inspection on the first try. AO SMOG is one of the licensed smog check locations in the area, and preparing properly before your visit can make the process smoother.

Understanding California Smog Check Requirements

Emissions testing and smog check rules in California vary by vehicle type, registration ZIP code, and model year. Since requirements can differ even within Vallejo, confirm what applies to you before heading to AO SMOG. Our California emissions testing guide outlines current 2025 rules, exemptions, and testing intervals.

Before Your Smog Check

To help make your emissions test quick and successful, consider preparing the following:

  • Confirm your registration address requires testing.
  • Ensure your check engine light is off and no recent codes have been cleared.
  • Warm up your vehicle by driving 10 to 15 minutes before testing.
  • Bring your registration or renewal notice and a valid photo ID.

Why Reviews Matter

Customer experiences can vary, so reading feedback from other drivers can help you understand what to expect. AO SMOG currently has 67 reviews, which can provide insights into service quality, wait times, and professionalism.

"Clear communication and preparation make your smog check easier. Ask AO SMOG about wait times, retest policies, or emissions repair services if you have concerns."

Visit Checklist

  • 1
    Verify Certification

    Ensure AO SMOG is an active, licensed smog check station in California.

  • 2
    Check Reviews

    Read recent customer feedback from other Vallejo drivers to understand typical wait times and service quality.

  • 3
    Confirm Services

    Call ahead to confirm the types of smog checks and emissions tests offered and whether appointments are required.

  • 4
    Bring Required Documents

    Have your registration or renewal notice, ID, and any required paperwork ready when visiting the station.

  • 5
    Ask About Retest Policies

    Some stations offer discounted or free retests if your vehicle fails. Ask for details up front.

* This guide is for informational purposes only. Always confirm emissions testing requirements and smog check policies with your local California authorities.