Trejo's Smog Check

Smog inspection station
Opens at 9:00 AM
4.9 (13 reviews)
18501 Hesperian Blvd, San Lorenzo, CA 94580

About

Trejo's Smog Check is a provider of smog check and emissions testing services in San Lorenzo, California. The business offers comprehensive emissions testing and vehicle inspection to ensure vehicles meet state standards. They also provide services to address emissions problems such as catalytic converter repairs, exhaust system repairs, and O2 sensor replacements. Focused specifically on emissions and inspection services, Trejo's Smog Check helps vehicle owners comply with California regulations. Their location in San Lorenzo makes it convenient for local residents to access reliable emissions testing services without needing extensive travel.

smog check vehicle inspection OBD testing San Lorenzo California emissions testing

Services Offered

smog check
Vehicle Inspection
OBD-II Diagnostics
Check Engine Light Diagnosis
Emissions-related repairs

What Customers Say

Review Summary

This shop is new to online reviews. They handle smog certifications, emissions checks, and vehicle inspection services. Contact for current pricing and wait time estimates.

Hours Closed
Mon 9 am–6:30 pm
Tue 9 am–6:30 pm
Wed 9 am–6:30 pm
Thu 9 am–6:30 pm
Fri 9 am–6:30 pm
Sat 9 am–5 pm
Sun 9 am–4:30 pm

Frequently Asked Questions

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

Trejo's Smog Check is located at 18501 Hesperian Blvd, San Lorenzo, California. You can visit them during their operating hours for emissions testing and vehicle inspections.
They offer smog check, vehicle inspection, OBD-II diagnostics, check engine light diagnosis, and emissions-related repairs like catalytic converter and exhaust repairs.
Yes, Trejo's Smog Check provides smog check and emissions testing services in San Lorenzo, California, to ensure your vehicle meets state emissions standards.
Trejo's Smog Check operates from 9 am to 6 30 pm Monday through Saturday, 9 am to 4 30 pm on Sunday, and 9 am to 6 30 pm on other weekdays.
You can contact Trejo's Smog Check at +1 510-332-6176 for inquiries about services, appointments, and hours of operation.
Appointments are recommended but not strictly required. You can visit during their open hours or call ahead to schedule a service.
Service times vary, but most emissions testing and inspections are completed within 30 minutes to an hour depending on vehicle condition and queue.
Customers rate Trejo's Smog Check highly with a 4.9-star average based on 13 reviews. Drivers often mention quick service and professional staff. For the latest feedback, check recent reviews on Google or other review platforms.

Can't find what you're looking for? Contact our customer support team

Making the Most of Your Visit to Trejo's Smog Check

Choosing the right emissions testing or smog check station in San Lorenzo, California can save you time, reduce stress, and help ensure your vehicle passes its inspection on the first try. Trejo's Smog Check 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 San Lorenzo, confirm what applies to you before heading to Trejo's Smog Check. 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. Trejo's Smog Check currently has 13 reviews, which can provide insights into service quality, wait times, and professionalism.

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

Visit Checklist

  • 1
    Verify Certification

    Ensure Trejo's Smog Check is an active, licensed smog check station in California.

  • 2
    Check Reviews

    Read recent customer feedback from other San Lorenzo 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.