California
Ontario

In N Out Smog Check & Clean Truck Air Check Services

Smog inspection station
Opens at 9:00 AM
4.3 (18 reviews)
534 S Mountain Ave, Ontario, CA 91762
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About

In N Out Smog Check & Clean Truck Air Check Services is a provider of smog check and emissions testing in Ontario, California. The business specializes in vehicle inspections and diagnostics to help vehicle owners pass state emissions requirements. Customers have praised their fast service and professional staff, noting the efficiency of the tests and the helpfulness of the team. This location offers a quick and reliable smog check process, with some reviews mentioning their prompt certification filing with the DMV. The service focus is on emissions testing and related repairs to ensure vehicles meet environmental standards rather than general auto repairs. It is a convenient option for residents needing compliance with California vehicle regulations.

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

What Customers Say

Review Summary

Customers generally find In N Out Smog Check & Clean Truck Air Check Services to be efficient and reasonably priced. Many reviews highlight the quick service times, with some customers being in and out within 15 to 30 minutes. Positive feedback emphasizes the professionalism and friendliness of the staff along with the smooth process of their smog check service. A few reviews mention that during busy times, there may be wait times, but overall, the experience has been satisfactory. The pricing is considered fair, reflecting the thoroughness of the inspections. The reliability and speed of certification submission to the DMV are also appreciated. Some reviews note service style may vary, and that for older cars, it is best to check availability beforehand.

534 S Mountain Ave, Ontario, CA 91762 +1 951-367-5376 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.

In N Out Smog Check & Clean Truck Air Check Services is located at 534 S Mountain Ave, Ontario, California, offering emissions testing and smog checks.
They offer services including smog check, vehicle inspection, OBD-II diagnostics, check engine light diagnosis, and emissions repairs.
Yes, they provide emissions testing and smog checks in Ontario, California, to help vehicle owners comply with state regulations.
Their hours are Monday to Saturday from 9 am to 5 pm, and they are closed on Sundays.
You can contact them at plus one nine five one three six seven five three seven six for more information or to schedule a service.
Appointment booking is recommended but not always required; it's best to call ahead especially during busy hours.
Service typically takes between 10 and 30 minutes depending on the vehicle and the type of check or repair needed.
Customers say that the staff is friendly and professional, and many appreciate the quick and efficient service for smog checks.

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Making the Most of Your Visit to In N Out Smog Check & Clean Truck Air Check Services

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. In N Out Smog Check & Clean Truck Air Check Services 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 In N Out Smog Check & Clean Truck Air Check Services. 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. In N Out Smog Check & Clean Truck Air Check Services currently has 18 reviews, which can provide insights into service quality, wait times, and professionalism.

"Clear communication and preparation make your smog check easier. Ask In N Out Smog Check & Clean Truck Air Check Services about wait times, retest policies, or emissions repair services if you have concerns."

Visit Checklist

  • 1
    Verify Certification

    Ensure In N Out Smog Check & Clean Truck Air Check Services 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.