California
West Covina

All Smog & Tune

Smog inspection station
Open · Closes 5:00 PM
4.6 (107 reviews)
645 N Sunset Ave, West Covina, CA 91790
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About

All Smog & Tune is a business that provides smog check and emissions testing services in West Covina, California. Their focus is on vehicle inspections and diagnostics related to emissions. Customers have appreciated their thorough approach and consistent service quality based on numerous reviews. They are known for their honest assessment and reasonable pricing. The shop also offers services that help fix emissions problems, including testing for catalytic converters and O2 sensors. Located conveniently in West Covina, California, they serve vehicle owners needing state-required emissions testing and repairs. Their staff aims to make the testing process quick and straightforward without unnecessary upselling, emphasizing safety and compliance.

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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 All Smog & Tune to be a dependable and fair provider for emissions testing and smog checks. Many reviews highlight quick service times and helpful staff, though some mention they may experience wait times during busy hours. The pricing is seen as reasonable, reflecting thorough inspections and honest work. Overall, clients appreciate the clear communication and professional attitude, which make repeat visits likely. A few comments note that service style may vary, but the focus remains on delivering straightforward and reliable testing services. For those in need of a smog check in West Covina, this business earns positive feedback for its consistency and trustworthiness.

645 N Sunset Ave, West Covina, CA 91790 +1 626-337-7422 Visit Website
Hours Open now
Mon 7 am–5 pm
Tue 7 am–5 pm
Wed • 7 am–5 pm
Thu 7 am–5 pm
Fri 7 am–5 pm
Sat 7 am–3 pm
Sun Closed
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Frequently Asked Questions

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

All Smog & Tune is located at 645 N Sunset Ave, West Covina, California. They serve vehicle owners in the area looking for emissions testing and smog checks.
They offer smog check services, vehicle inspections, diagnostics for check engine lights, and repairs related to emissions issues like catalytic converters and O2 sensors.
Yes, All Smog & Tune provides emissions testing and smog checks in West Covina, California. It is their primary service to ensure vehicles meet state emissions standards.
Their operating hours are Monday through Saturday from 7 am to 5 pm, with Saturday closing earlier at 3 pm. They are closed on Sundays.
You can contact All Smog & Tune by calling +1 626-337-7422. Their staff is available during business hours to assist with appointments and inquiries.
Appointments are recommended to ensure timely service, especially during peak hours. Walk-ins may be accommodated depending on availability.
Service typically takes around 30 minutes to an hour, depending on the vehicle and whether repairs or additional diagnostics are needed.
Customers say that All Smog & Tune consistently provides honest and helpful service. Many appreciate their professionalism and fair pricing for emissions testing.

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Alto Smog & Tune provides smog check and vehicle inspection services in West Covina, California. View hours and details.

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Making the Most of Your Visit to All Smog & Tune

Choosing the right emissions testing or smog check station in West Covina, California can save you time, reduce stress, and help ensure your vehicle passes its inspection on the first try. All Smog & Tune 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 West Covina, confirm what applies to you before heading to All Smog & Tune. 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. All Smog & Tune currently has 107 reviews, which can provide insights into service quality, wait times, and professionalism.

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

Visit Checklist

  • 1
    Verify Certification

    Ensure All Smog & Tune is an active, licensed smog check station in California.

  • 2
    Check Reviews

    Read recent customer feedback from other West Covina 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.