Mobile CARB-certified emissions testing for commercial fleets across Northern California. We come to your office, yard, or jobsite — weekends included, fleets our specialty.
We handle everything so your fleet stays moving and your business stays compliant. Call, text, or book online 24/7 — no shop trips, ever.
Book Your Test →Call, text, or fill out the form 24/7. We confirm your vehicles, location, and schedule within 2 hours.
Our certified tech arrives at your office, yard, or jobsite — weekends and flexible scheduling included.
Results are submitted directly to CARB same day. You receive your compliance documentation immediately.
The test type is determined by your engine model year — no guesswork. Flat rate, no hidden fees.
Over 28 verified reviews from fleet managers across Northern California.
"Scheduled online, they showed up the next morning at our yard in Fairfield. Both trucks passed. The whole thing took maybe 40 minutes. Way easier than hauling them to a test station."
"I had three pre-2013 diesels that needed smoke opacity testing before a CARB deadline. They came to our lot in Oakland, handled all three back to back. Competitive price and zero hassle."
"I texted at 7 PM on a Sunday and had a booking confirmed within the hour. That 24/7 availability is no joke. Showed up on time, professional, and got us compliant. Highly recommend."
"Been using NorCal CARB Mobile for two years now across our SF Bay Area fleet. They know the regs inside out — if there's a potential issue they'll flag it before it becomes a violation."
"Our yard is in Vacaville and I was worried about coverage. They came out no problem, tested five trucks, submitted everything to CARB same day. The drivers kept the trucks running — zero downtime."
On-Board Diagnostics — electronic port scan for 2013 and newer diesel commercial vehicles. CARB Clean Truck Check compliant.
SAE J1667 snap-acceleration smoke opacity test for 2012 and older diesel commercial vehicles.
Fleet batch testing is our specialty. One visit. All vehicles. Weekends and flexible scheduling included.
We test commercial trucks, motorhomes/RVs, and agricultural diesel equipment subject to CARB regulations.
We'll schedule your test fast. Mobile CARB-certified emissions testing across the SF–Fairfield–San Jose corridor — we come to your yard.
We cover the full Hwy 101 corridor from Novato to San Jose, plus the East Bay along I-880. No travel fees inside our service zone. We come to your office, yard, or jobsite.
From Marin County ports to San Jose distribution centers, from Oakland warehouses to Peninsula job sites — we come to you. 415-900-8563
Enter your engine year and we'll instantly show you the right test type and price. We'll confirm your appointment by phone.
Enter your engine year to see your test type & price.
Novato · SF · East Bay · San Jose corridor
CARB-certified mobile emissions testing
NorCal CARB Mobile LLC
We coordinate around your operation — weekends, early mornings, multi-vehicle visits. Call 415-900-8563.