California
Brentwood

Horizon Smog

Smog inspection station
Opens at 9:00 AM
4.2 (99 reviews)
205 Oak St, Brentwood, CA 94513
Call Now Visit Website

About

Horizon Smog is a professional emissions testing station located in Brentwood, California. They specialize in providing thorough smog check services to ensure vehicles meet state emissions standards. The location is known for quick and efficient testing, often getting customers in and out within 30 minutes. Customers often appreciate the straightforward process and clear communication from staff about repairs needed. The shop also offers vehicle inspections and diagnostics for emissions-related issues. Their focus on emissions testing makes them a reliable choice in Brentwood, California, for vehicle owners seeking to pass mandatory inspections without hassle.

smog check vehicle inspection OBD testing Brentwood 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 generally find Horizon Smog to be a fast and efficient place for their emissions testing needs. While some reviews mention wait times during busy periods, many appreciate the professionalism and clarity of service. The staff is often praised for their helpful attitude and the quick turnaround for smog checks and diagnostics. Pricing varies, but customers report that the costs reflect the thoroughness of the inspection. Overall, the business maintains a good reputation in Brentwood, California, for providing service that emphasizes efficiency and clarity, despite some minor variations in individual experiences.

205 Oak St, Brentwood, CA 94513 +1 925-308-7600 Visit Website
Hours Closed
Mon Closed
Tue 9 am–5:30 pm
Wed • 9 am–5:30 pm
Thu 9 am–5:30 pm
Fri 9 am–5:30 pm
Sat 9 am–5 pm
Sun Closed
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Frequently Asked Questions

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

Horizon Smog is located at 205 Oak St, Brentwood, California. You can find them in the Brentwood area easily accessible from local roads.
They offer smog check, vehicle inspection, OBD-II diagnostics, check engine light diagnosis, and emissions-related repairs.
Yes, Horizon Smog provides emissions testing and smog check services to ensure vehicles pass California state requirements.
Their operating hours are Monday and Sunday closed; Tuesday to Saturday from 9am to 5:30pm.
You can contact Horizon Smog by calling +1 925-308-7600 or visiting their website at http://www.horizonsmog.com/.
No appointment is necessary for most services, but it is recommended to call ahead during peak hours.
Service duration at Horizon Smog typically ranges from 15 to 30 minutes for a standard smog check.
Customers have noted that Horizon Smog is known for quick service and helpful staff, making emissions testing straightforward in Brentwood, California.

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Making the Most of Your Visit to Horizon Smog

Choosing the right emissions testing or smog check station in Brentwood, California can save you time, reduce stress, and help ensure your vehicle passes its inspection on the first try. Horizon 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 Brentwood, confirm what applies to you before heading to Horizon 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. Horizon Smog currently has 99 reviews, which can provide insights into service quality, wait times, and professionalism.

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

Visit Checklist

  • 1
    Verify Certification

    Ensure Horizon Smog is an active, licensed smog check station in California.

  • 2
    Check Reviews

    Read recent customer feedback from other Brentwood 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.