California
Thousand Oaks

Ace Diagnostics

Smog inspection station
Opens at 9:00 AM
4.8 (17 reviews)
3139 Los Feliz Dr Unit 5, Thousand Oaks, CA 91362
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About

Ace Diagnostics is a focused emissions testing provider in Thousand Oaks, California. They offer smog check services to help vehicles meet state requirements. Customers appreciate their thoroughness and friendly staff, often comment on the quick and efficient testing process. Many reviews highlight their trustworthiness and fair pricing for emissions testing. The shop is known for reliable vehicle inspections and diagnostics related to emissions problems. Their team also handles repairs such as catalytic converter replacements and exhaust work. Located in Thousand Oaks, California, Ace Diagnostics emphasizes quality service for vehicle emissions compliance without unnecessary repairs or delays.

smog check vehicle inspection OBD testing Thousand Oaks 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 report that Ace Diagnostics provides a reliable and friendly service experience for vehicle testing. Wait times are generally reasonable, especially during non-peak hours. Many reviewers mention the staff's helpfulness and honesty, which adds confidence to their testing process. Pricing is considered fair, reflecting the thorough inspection and diagnostic services offered. Some note that service style may vary, but overall, they feel satisfied with the results. The shop's focus on emissions testing and customer trust makes it a preferred choice in the area, with consistent positive feedback on their professionalism and quality work.

3139 Los Feliz Dr Unit 5, Thousand Oaks, CA 91362 +1 818-602-5470 Visit Website
Hours Closed
Mon 9 am–8 pm
Tue 9 am–8 pm
Wed • 9 am–8 pm
Thu 9 am–8 pm
Fri 9 am–8 pm
Sat 10 am–6 pm
Sun 10 am–5 pm
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Frequently Asked Questions

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

Ace Diagnostics is located at 3139 Los Feliz Dr Unit 5 in Thousand Oaks, California. They serve customers in the area with emissions testing and smog check services.
Ace Diagnostics offers smog check, vehicle inspection, OBD-II diagnostics, check engine light diagnosis, and emissions-related repairs in Thousand Oaks, California.
Yes, Ace Diagnostics provides emissions testing including smog check services to ensure vehicles meet California emissions standards.
They are open Monday through Saturday from 9 am to 8 pm, and on Sunday from 10 am to 5 pm, making it convenient to get emissions testing in Thousand Oaks.
You can contact Ace Diagnostics by phone at +1 818-602-5470 or visit their website for more information.
Appointments are not always required but can be scheduled for quicker service. Walk-ins are welcomed during operating hours.
Service times usually range from 15 to 30 minutes depending on the vehicle and testing requirements at Ace Diagnostics in Thousand Oaks.
Customers note that Ace Diagnostics provides a professional, friendly, and reliable testing experience, making it a trusted choice for emissions services in Thousand Oaks.

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Making the Most of Your Visit to Ace Diagnostics

Choosing the right emissions testing or smog check station in Thousand Oaks, California can save you time, reduce stress, and help ensure your vehicle passes its inspection on the first try. Ace Diagnostics 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 Thousand Oaks, confirm what applies to you before heading to Ace Diagnostics. 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. Ace Diagnostics currently has 17 reviews, which can provide insights into service quality, wait times, and professionalism.

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

Visit Checklist

  • 1
    Verify Certification

    Ensure Ace Diagnostics is an active, licensed smog check station in California.

  • 2
    Check Reviews

    Read recent customer feedback from other Thousand Oaks 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.