Mobile CARB-certified emissions testing for commercial fleets across the East Bay. We come to your yard, shop, or jobsite along I-880 — Union City, Fremont, Castro Valley, and Hayward.
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
Hayward & the East Bay.
We cover Hayward, Union City, Fremont, Castro Valley, San Leandro, and the full I-880 industrial corridor. No travel fees inside our East Bay service zone.
From Marin County ports to San Jose distribution centers, from Oakland warehouses to Peninsula job sites — we come to you. No shop trips, ever. Weekends available and fleet scheduling is our specialty.
Hayward
Union City
Fremont
Castro Valley
San Leandro
Newark
San Lorenzo
Ashland
Cherryland
Fleet scheduling? Call us directly.
We coordinate around your operation — weekends, early mornings, multi-vehicle visits. 415-900-8563
5-Star Reviews
Fleet Owners Trust Us.
Over 28 verified reviews from fleet managers across Northern California.
★★★★★
They tested six trucks at our yard off Industrial Pkwy. All passed, paperwork done on-site. No shop trip needed.
James R.
Fleet Manager · Hayward, CA
★★★★★
Scheduled for a Saturday morning before our CARB deadline. Professional, fast, and fairly priced for the East Bay.
Priya S.
Owner · Castro Valley Trucking
★★★★★
Our pre-2013 diesels needed smoke opacity testing. They handled all three at our lot — zero downtime for the fleet.
Tom H.
Operations · Fremont, CA
Common Questions
CARB Compliance FAQ
What is the Clean Truck Check Hayward program?
The Clean Truck Check Hayward 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 415-900-8563 — 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@cleantruckcheckhayward.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 Hayward and surrounding areas?
Yes — through our network of sister sites. We operate dedicated service areas for each region: