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Howard’s
Mobile Smog
Howard’s Mobile Smog offers fast, on-site smog checks for trucks, RVs, and diesel vehicles. Stay CARB-compliant with our hassle-free, certified mobile smog testing. Book your smog test today!
Who We Are
Who We Are
At Howard’s Mobile Smog, we specialize in mobile smog testing, offering convenient, fast, and reliable emissions testing for diesel vehicles, trucks, RVs, and commercial fleets. Our licensed and certified technicians bring state-approved smog tests directly to your location, ensuring your vehicle meets California Air Resources Board (CARB) requirements without the hassle of waiting in line.
What is a
What is a
Clean Truck Check?
Clean Truck Check?
Howard’s Mobile Smog is here to help you stay compliant with California’s Clean Truck Check program. The California Air Resources Board (CARB) has developed and implemented a Heavy-Duty Vehicle Inspection and Maintenance (HD I/M) regulation to ensure that diesel trucks over 14,000 pounds maintain properly functioning emission control systems while operating on California roadways.
This program combines periodic emissions testing, remote monitoring, and expanded enforcement strategies to identify vehicles in need of emissions-related repairs and ensure they are properly addressed.
We proudly serve Los Angeles (LA), Orange County (OC), Inland Empire (IE), and San Diego (SD) areas. Let Howard’s Mobile Smog help you stay compliant with CARB regulations!
✅ We test and upload all results directly to CARB’s database, so you don’t have to.
📅 Schedule your mobile Clean Truck Check today! Call +1 (909) 900-4011 or book online.
About Us
About Us
Howard’s Mobile Smog is a trusted mobile smog company dedicated to keeping your vehicle compliant with California emissions laws. We offer Clean Truck Check (CTC) testing, OBD smog tests, and smoke opacity testing for heavy-duty diesel vehicles. Our on-site smog inspections eliminate downtime, ensuring your truck, RV, or fleet stays road-ready and compliant with CARB’s Clean Truck Check program.
Why Choose a Mobile Smog Service?
Why Choose a Mobile Smog Service?
No waiting at a smog station—we come to
You!
Faster, easier, and more convenient smog checks.
Certified smog test results uploaded directly to CARB.
Perfect for fleet owners and businesses needing multiple tests.
Our Services
Our Services
OBD TESTING
OBD TESTING
OBD TESTING FOR 2013 AND NEWER DIESEL VEHICLES. TEST MAY TAKE UP TO 20-30 MIN. WE CAN TEST ON SITE AT YOUR FACILITY OR AT OUR FACILITY IN Moreno Valley.
$150 WITH DISCOUNT APPLIED
SMOKE OPACITY TESTING
SMOKE OPACITY TESTING
FOR 2012 AND OLDER DIESEL MOTORS THAT DO NOT HAVE OBD CONNECTION. TEST MAY TAKE UP TO AN HR TO PERFORM. VEHICLE MUST BE AT OPERATING TEMP. TO PERFORM. WE CAN TEST ON SITE AT YOUR FACILITY OR AT OUR FACILITY IN Moreno Valley.
$300 WITH DISCOUNT APPLIED
CTC VIS ACCOUNT SUPPORT
CTC VIS ACCOUNT SUPPORT
ALL DIESEL TRUCKS, BUSES, AND RVs MUST BE REGISTERED ONLINE WITH CARB. WE OFFER SERVICE TO HELP CREATE AND MANAGE CTC VIS PORTALS. THIS SERVICE CAN BE DONE REMOTELY VIA PHONE, BY YOU VISITING US AT OUR FACILITY IN Moreno Valley, OR WE MAY TRAVEL TO YOU.
$55 WITH DISCOUNT APPLIED
What We Offer
What We Offer
Convenience: We come to your location, eliminating long wait times.
State-Certified Technicians: Our team is fully licensed and trained.
Same-Day Service Available: Fast, efficient smog checks with instant results.
CARB Compliance Guaranteed: We ensure your vehicle meets all California smog check regulations.
Hassle-Free Testing: Results are directly uploaded to CARB, so you don’t have to worry about paperwork.
Why Choose Howard’s Mobile Smog?
Why Choose Howard’s Mobile Smog?
✔ Certified & Licensed Professionals – Experienced and knowledgeable in California smog regulations.
✔ Quick & Efficient Testing – Most tests take only 20–30 minutes, minimizing downtime.
✔ No Hidden Fees – Transparent pricing with affordable rates and discounts available.
✔ Pass or Don’t Pay Guarantee – If your vehicle doesn’t pass, you don’t pay!
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