Mobile CARB Clean Truck Check testing for diesel trucks, RVs, motorhomes, buses and fleets over 14,000 GVWR. OBD testing for newer engines, opacity testing for older diesels, and fleet compliance support at your location.
Built for owner-operators, fleets, contractors, diesel RV owners and businesses that need compliance without losing time driving to a shop.
Electronic emissions compliance testing for 2013+ diesel engines using diagnostic connection.
Learn more →Smoke opacity and visual inspection support for older diesel vehicles and non-OBD equipment.
Learn more →Mobile service for diesel pushers, RVs, box trucks, semis, buses, contractors and fleet yards.
Learn more →Send your location, vehicle year, engine type and deadline. We confirm the right test.
Testing can be done at your yard, shop, home, RV storage, jobsite or fleet terminal.
Passing results are submitted through the required Clean Truck Check process.
Mobile testing throughout Sacramento, Roseville and Northern California. Each city page is built for Google SEO and Google Ads landing traffic.
Trusted by diesel truck owners, fleets and RV customers across Northern California with over 131 verified 5-star Google reviews.
Latest reviews pulled directly from Google.
“Top-notch service from Serg at Mobile Clean Truck Check! He is professional, timely, and fairly priced.”
— Jeanette“Great work, excellent service! Thank you very much!”
— Igor Kostiunichev“Very professional. Arrived on time, completed the job quickly and efficiently. Would definitely use him again.”
— Marianne Bickford“I own a 2024 Jayco Seneca on the Freightliner S2RV chassis. Serhiy traveled to my RV and within minutes the test was completed and results were transmitted to CARB.”
— Scott Sheedy“I highly recommend Serhiy for your RV smog test. Knowledgeable, accommodating and prompt. He made the whole process very easy.”
— Susan RhymeFive-star reviews from Clean Truck Check, fleet and diesel RV customers across Northern California.
Google VerifiedActual customer trucks and fleet service photos from Google reviews and mobile testing appointments.
Many diesel and alternative-fuel heavy-duty vehicles over 14,000 GVWR operating in California are subject to Clean Truck Check requirements. We help confirm what test your vehicle needs.
Yes. We service diesel motorhomes and RVs, including Class A diesel pushers, at your home, storage facility or RV park when access allows.
OBD testing connects electronically to newer engines. Opacity testing checks smoke output and visual emissions equipment on older diesel vehicles.
Yes. Fleet testing is one of the best uses of mobile service because it reduces downtime and keeps trucks from traveling to a shop.
Call, text, or email now and send your vehicle count, city and deadline.
Email: info@dieselcheckca.com