ASE Heavy Duty / Medium Duty Certified

Isuzu Master Certified

Advanced Level ASE Certified

Mobile CLEAN TRUCK CHECK Inspections

(805) 638-3911

Service Areas

Clean Truck  Check Services for Your Fleet Throughout LA and Surrounding Areas


Are you searching for a smog inspection center that provides convenient, mobile services in LA, Orange, Ventura, and Santa Barbara counties?


CARB Clean Truck Check / CARB HD Inspection provides reliable, mobile Clean Truck Check services and smoke opacity tests for motorhomes and RVs. Based in Simi Valley, CA, we serve vehicle owners and fleet operators across Los Angeles, Orange, Ventura, and Santa Barbara counties. Our goal is to help ensure diesel vehicles over 14,000 lbs meet California’s air quality standards under the new 2025 smog law.

Clean Truck Check Credentialed Tester 

We bring our expertise directly to you with mobile testing services designed for convenience. As a Clean Truck Check Credentialed Tester, we perform thorough inspections to ensure compliance with California Air Resources Board (CARB) regulations. Whether you own a single diesel vehicle or manage a large fleet, we help keep your vehicles registered and compliant.

CTC in California



Our mobile smog inspection services are available throughout:

Orange County

Servicing Anaheim, Santa Ana, Irvine, and surrounding areas.

Los Angeles County

Covering major cities including Los Angeles, Long Beach, Pasadena, and more.

Ventura County

Providing inspections in Ventura, Oxnard, Thousand Oaks, and nearby locations.

Santa Barbara County

Serving Santa Barbara, Goleta, Lompoc, and surrounding areas.

Fleet Compliance & Discounts

We work with both individual truck owners and business owners managing fleets. To help businesses stay compliant, we offer fleet discounts for companies needing multiple vehicles inspected.

Smoke Opacity Testing for Motorhomes & RVs



Motorhomes and RVs must undergo regular smoke opacity tests to comply with California’s emissions laws. We use advanced opacity meters to analyze tailpipe emissions and ensure compliance based on vehicle type and model year.

Schedule Your Mobile Inspection Today

Stay compliant with CARB regulations with our convenient mobile Clean Truck Check services. Call (805) 638-3911 to schedule your service today.

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