Ontario Smog Check

Smog inspection station
Opens at 9:00 AM
4.3 (85 reviews)
5420 W Mission Blvd, Ontario, CA 91762

About

Ontario Smog Check is a vehicle testing station located in Ontario, California. They specialize in providing smog check services to help vehicles pass emissions requirements. The business has a reputation for quick and professional testing, with many customers noting friendly staff and efficient service. Some reviews mention that wait times can vary during busy hours but generally praise the thoroughness and helpfulness of the team. The facility also offers vehicle inspections and diagnostics to assist with emissions problems. Their focus is on ensuring that vehicles meet emissions standards and pass smog checks to comply with regulations in Ontario, California.

smog check vehicle inspection obd testing Ontario 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 describe Ontario Smog Check as a reliable place for emissions testing. Many mention fast and friendly service, though some note that wait times may be longer during peak hours. They appreciate the professional staff and clear communication. The pricing is considered reasonable, reflecting thorough inspections. Overall, customers feel confident their vehicles will pass emissions tests in a fair and efficient manner, making it a trusted choice in Ontario, California. Some reviews highlight excellent customer service, while others suggest that service style may vary at different times.

Hours Closed
Mon 9 am–5 pm
Tue 9 am–5 pm
Wed 9 am–5 pm
Thu 9 am–5 pm
Fri 9 am–5 pm
Sat 9 am–2 pm
Sun Closed

Frequently Asked Questions

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

Ontario Smog Check is located at 5420 W Mission Blvd in Ontario, California.
They offer smog check, vehicle inspection, diagnostics, emissions-related repairs, and more.
Yes, Ontario Smog Check provides smog check services in Ontario, California.
Their hours are Monday to Saturday from 9 am to 5 pm, and Friday 9 am to 5 pm, closed Sundays.
You can contact them at +1 909-590-5100 for appointments and inquiries.
Appointments are not mandatory but recommended for quicker service.
Service times vary but typically take 15 to 30 minutes depending on the vehicle.
Customers generally describe Ontario Smog Check as professional, friendly, and efficient, making it a reliable location for emissions testing.

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Making the Most of Your Visit to Ontario Smog Check

Choosing the right emissions testing or smog check station in Ontario, California can save you time, reduce stress, and help ensure your vehicle passes its inspection on the first try. Ontario 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 Ontario, confirm what applies to you before heading to Ontario 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. Ontario Smog Check currently has 85 reviews, which can provide insights into service quality, wait times, and professionalism.

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

Visit Checklist

  • 1
    Verify Certification

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

  • 2
    Check Reviews

    Read recent customer feedback from other Ontario 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.