Diesel Smog Check in Fullerton, CA
Diesel emissions testing requires specialized equipment and experienced technicians. At Fullerton Smog Check Test Only, we perform professional diesel smog inspections for qualifying diesel vehicles while ensuring compliance with California emissions standards.
Diesel Smog Services We Offer
- DMV renewal smog — for diesel vehicles due for registration renewal
- Diesel emissions testing — comprehensive diagnostics
- Opacity testing — smoke opacity measurement per BAR standards
- STAR diesel inspection — for DMV-directed diesel vehicles
Which Diesel Vehicles Need a Smog Check?
In California, diesel vehicles with a Gross Vehicle Weight Rating (GVWR) of 14,000 lbs or less and model year 1998 or newer are required to pass a smog inspection. This includes diesel pickup trucks, SUVs, and passenger vehicles.
Our Diesel Testing Equipment
Our STAR-certified station is equipped with BAR-approved diesel emissions testing equipment, including opacity meters for accurate smoke testing. Our technicians are trained specifically in diesel emissions diagnostics.
Ready for Your Smog Check?
Walk-ins welcome · Same-day service · Only $41.75 + $8.25 certificate
All Our Smog Check Services
🔍 Smog Test Only
🚗 Regular Smog
🚛 Diesel Smog
🔋 Hybrid Smog
🗺️ Out-of-State
📝 Change of Ownership
🏛️ DMV Renewal
📍 Visit Us Today
Fullerton Smog Check Test Only
800 N Harbor Blvd, Fullerton, CA 92832
(714) 871-7664
Hours: Mon–Fri 8:30 AM–5:30 PM | Sat 8:30 AM–5:00 PM | Sun 8:30 AM–4:00 PM
📍 Get Directions on Google Maps · 📋 Verify Our License (DCA)
Frequently Asked Questions
Do diesel trucks need smog checks in California?
Yes, diesel-powered vehicles with a gross vehicle weight rating (GVWR) of 14,000 lbs or less require smog checks in California. This includes most diesel pickup trucks and SUVs. Fullerton Smog Check Test Only is equipped with diesel-specific testing equipment at 800 N Harbor Blvd, Fullerton, CA 92832.
What is a diesel smog test?
A diesel smog test measures opacity — the amount of visible smoke in your exhaust. Fullerton Smog Check Test Only uses a state-approved opacity meter that measures the density of particulate matter during a snap acceleration test. The process is different from gasoline vehicle testing.
Are diesel smog requirements changing in California?
California is expanding diesel emissions requirements. Starting in recent years, more diesel vehicles are being brought under smog check requirements. It’s important to check your DMV renewal notice for the latest requirements for your specific vehicle.
What diesel vehicles are exempt from smog checks?
Diesel vehicles with a GVWR over 14,000 lbs are exempt from biennial smog checks but may be subject to CARB’s Truck & Bus Regulation. Diesel vehicles 1997 and older may also be exempt. Check your DMV renewal notice or call (714) 871-7664 to verify.