California
Ontario

T & T Smog Test Only

Smog inspection station
Opens at 9:00 AM
4.5 (38 reviews)
5490 W Mission Blvd, Ontario, CA 91762
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About

T & T Smog Test Only is a specialized smog check provider located in Ontario, California. The business focuses on emissions testing services, including smog checks for vehicles in the area. Customers appreciate their quick and professional testing experience, often in and out within 15 minutes. Many reviews mention friendly staff and reasonable prices, making it a popular choice for vehicle inspections and emissions related repairs. The shop also offers services for fixing emissions problems such as catalytic converters, exhaust systems, and oxygen sensors. Located conveniently off W Mission Blvd, T & T Smog Test Only provides reliable testing for vehicle owners in Ontario and nearby regions. They are dedicated to helping drivers pass emissions tests efficiently and correctly, ensuring vehicles meet California standards.

smog check vehicle inspection obd testing Ontario California emissions testing

Services Offered

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

What Customers Say

Review Summary

Customers generally find T & T Smog Test Only to be professional and efficient, with most reviews highlighting fast service and helpful staff. Some note that wait times can vary during busy periods but appreciate the overall quick turnaround. Pricing is considered fair and transparent by many clients. A few reviews mention service style may vary, and some customers have experienced minor misunderstandings, but the overall feedback is positive. The shop’s focus on emissions testing and smog checks makes it a reputable choice for vehicle owners seeking reliable results in Ontario. Repeat customers value the consistent quality and straightforward process at this location.

5490 W Mission Blvd, Ontario, CA 91762 +1 909-628-3337 Visit Website
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
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Frequently Asked Questions

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

T & T Smog Test Only is located at 5490 W Mission Blvd, Ontario, California. It is easily accessible for vehicle owners in the area.
The shop offers smog check, vehicle inspection, OBD-II diagnostics, check engine light diagnosis, and emissions-related repairs such as catalytic converter and exhaust repairs.
Yes, T & T Smog Test Only provides smog check services in Ontario, California, including emissions testing to help vehicles meet California standards.
They operate Monday through Saturday, with hours from 9 am to 5 pm, and are closed on Sundays.
You can contact T & T Smog Test Only by phone at plus one 909-628-3337 or visit their website at www.ttsmogtest.com for more information.
Walk-ins are accepted; customers typically experience quick service, often in less than 15 minutes, but peak hours may affect wait times.
Service duration generally ranges from 15 to 30 minutes depending on the vehicle and testing requirements at T & T Smog Test Only.
Customers praise T & T Smog Test Only for their friendly staff, quick service, fair pricing, and reliable smog check results in Ontario, California.

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Making the Most of Your Visit to T & T Smog Test Only

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. T & T Smog Test Only 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 T & T Smog Test Only. 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. T & T Smog Test Only currently has 38 reviews, which can provide insights into service quality, wait times, and professionalism.

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

Visit Checklist

  • 1
    Verify Certification

    Ensure T & T Smog Test Only 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.