Mobile CARB-certified emissions testing for commercial fleets in Roseville, Rocklin, Lincoln, and Placer County — north along the corridor to Chico and Butte County. We come to your yard — no shop trips.
Fail a test we conduct? We come back and retest free. No charge, no hassle.
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$40 CASH REFERRAL
Send a fleet or truck our way — we hand you $40 cash when they test. Hit 10 referrals and that's $400.
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ZERO TRAVEL FEES
Flat rate — always. No fuel surcharge, no mileage, no hidden fees. What you see is what you pay.
Simple Process
Done in 3 Steps.
We handle everything so your fleet stays moving and your business stays compliant.
01
Book Your Test
Call, text, or fill out the form above 24/7. We confirm your vehicles, location, and schedule within 2 hours.
02
We Come to You
Our certified tech arrives at your office, yard, or jobsite — weekends and flexible scheduling included. No shop trips, ever.
03
Pass & Stay Compliant
Results are submitted directly to CARB same day. You receive your compliance documentation immediately.
Where We Operate
Placer County Hub. North to Chico & Butte.
Roseville is our Placer County base — Rocklin, Lincoln, Auburn, Granite Bay, Loomis — then north up the corridor through Yuba / Marysville and Oroville to Chico and Butte County. Flat-rate mobile testing. Sacramento has its own site.
From Roseville and Rocklin yards through Lincoln and Auburn, north to Yuba City, Oroville, Chico, and Butte County — we come to you. No shop trips, ever. Weekends available and fleet scheduling is our specialty. (Sacramento metro → cleantruckchecksacramento.com.)
Roseville
Rocklin
Lincoln
Granite Bay
Auburn
Loomis
Folsom
Citrus Heights
Marysville
Yuba City
Oroville
Chico
Fleet scheduling? Call us directly.
We coordinate around your operation — weekends, early mornings, multi-vehicle visits. 916-890-4427
5-Star Reviews
Fleet Owners Trust Us.
Over 28 verified reviews from fleet managers across Northern California.
★★★★★
Booked online, they showed up at our Rocklin yard the next day. Both trucks passed in under an hour total.
Karen W.
Fleet Manager · Roseville, CA
★★★★★
Fair price for Placer County. They know the 2026 biannual rules and walked me through exactly what I needed.
Rick D.
Owner-Operator · Lincoln, CA
★★★★★
Fleet of eight tested on-site before a compliance audit. Professional crew, same-day CARB submission.
The Clean Truck Check is a mandatory vehicle inspection program administered by the California Air Resources Board for commercial diesel trucks and buses operating in California. It requires periodic emissions testing to ensure vehicles meet CARB standards and reduce harmful air pollution. View the official program page →
Do I need an OBD test or an OVI Smoke Test?
It depends on your engine model year. Engines from 2013 and newer require an OBD (On-Board Diagnostics) test at $75. Engines from 2012 and older require an OVI Smoke Opacity Test at $199. Not sure? Call 916-890-4427 — we'll identify the right test in under two minutes.
How often does my truck need to be tested?
Testing frequency depends on your engine model year and gross vehicle weight rating (GVWR). In 2026, many vehicles have moved to twice-per-year testing schedules. We track compliance deadlines for regular customers and send retest reminders so you never miss a CARB deadline.
What happens if my truck fails the test?
If your vehicle doesn't pass, we provide full documentation of the test results along with a clear explanation of why. Our technicians are knowledgeable about common failure causes and can advise on next steps toward a successful retest.
Do you test Motorhomes and Agricultural Equipment?
Yes — we test commercial trucks, motorhomes/RVs, and agricultural diesel equipment subject to CARB regulations. Use our booking form above to specify your vehicle type and we'll confirm the right test.
Can you test an entire fleet in a single visit?
Absolutely. Fleet batch testing is our specialty. Email info@cleantruckcheckroseville.com with your vehicle count, location, and preferred date range and we'll coordinate a single on-site visit to knock out your entire fleet.
Do you serve Roseville and surrounding areas?
Yes. This site is for Placer County (Roseville, Rocklin, Lincoln, Granite Bay, Auburn, Loomis, Folsom, Citrus Heights) and north to Chico and Butte County (Marysville, Yuba City, Oroville, Chico). We come to your yard.