Colorado
Denver

L & N Diesel Emissions Testing & Repair

Car inspection station
Opens at 8:30 AM
4.6 (327 reviews)
1700 W Mississippi Ave unit a, Denver, CO 80223
Call Now Visit Website

About

L & N Diesel Emissions Testing & Repair is a provider of emissions testing services in Denver, Colorado. Their emissions testing includes smog checks and vehicle inspections to help ensure your vehicle meets local standards. The business also offers services related to emissions issues such as catalytic converter repairs, exhaust system repairs, and O2 sensor replacements. Located in Denver, Colorado, they are classified as a car inspection station and an auto repair shop specializing in diesel engine repairs. Their focus is on vehicle emissions and safety inspections, serving the local community with professional testing and repair services.

emissions testing vehicle inspection OBD testing Denver Colorado

Services Offered

emissions testing
Vehicle Inspection
OBD-II Diagnostics
Check Engine Light Diagnosis
Emissions-related repairs

What Customers Say

Review Summary

Customer feedback isn't available for this shop yet. They specialize in emissions inspections, smog testing, and diagnostic repairs. Call for appointment scheduling and rates.

1700 W Mississippi Ave unit a, Denver, CO 80223 +1 720-527-3445 Visit Website
Hours Closed
Mon 8:30 am–4 pm
Tue 8:30 am–4 pm
Wed • 8:30 am–4 pm
Thu 8:30 am–4 pm
Fri 8:30 am–4 pm
Sat 8:30 am–12 pm
Sun Closed
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Frequently Asked Questions

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

L & N Diesel Emissions Testing & Repair is located at 1700 W Mississippi Ave unit a, Denver, Colorado. You can visit their shop during business hours, or contact them directly.
They offer emissions testing, vehicle inspection, OBD-II diagnostics, check engine light diagnosis, and emissions-related repairs such as catalytic converter work and exhaust repairs.
Yes, L & N Diesel Emissions Testing & Repair provides emissions testing and smog checks in Denver, Colorado. They specialize in emissions testing services.
Their operating hours are Monday through Saturday from 8:30 am to 4 pm. They are closed on Sundays.
You can contact L & N Diesel Emissions Testing & Repair by phone at +1 720-527-3445 or visit their website for more information.
Appointments are recommended but not always required. Contact the shop to discuss scheduling and availability for emissions testing and repairs.
Service times vary depending on the specific work required. Generally, emissions testing can be completed within an hour, but complex repairs may take longer.
Customers rate L & N Diesel Emissions Testing & Repair highly with a 4.6-star average based on 327 reviews. Drivers often mention quick service and professional staff. For the latest feedback, check recent reviews on Google or other review platforms.

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Making the Most of Your Visit to L & N Diesel Emissions Testing & Repair

Choosing the right emissions testing or smog check station in Denver, Colorado can save you time, reduce stress, and help ensure your vehicle passes its inspection on the first try. L & N Diesel Emissions Testing & Repair is one of the licensed smog check locations in the area, and preparing properly before your visit can make the process smoother.

Understanding Colorado Smog Check Requirements

Emissions testing and smog check rules in Colorado vary by vehicle type, registration ZIP code, and model year. Since requirements can differ even within Denver, confirm what applies to you before heading to L & N Diesel Emissions Testing & Repair. Our Colorado 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. L & N Diesel Emissions Testing & Repair currently has 327 reviews, which can provide insights into service quality, wait times, and professionalism.

"Clear communication and preparation make your smog check easier. Ask L & N Diesel Emissions Testing & Repair about wait times, retest policies, or emissions repair services if you have concerns."

Visit Checklist

  • 1
    Verify Certification

    Ensure L & N Diesel Emissions Testing & Repair is an active, licensed smog check station in Colorado.

  • 2
    Check Reviews

    Read recent customer feedback from other Denver 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 Colorado authorities.