Excellent service. They came to our yard in Texas and got our whole fleet tested and compliant before our run to California. Highly recommend.
★★★★★
Mobile Clean Truck Check Testing
Mobile Clean Truck Check Testing.
Mobile Clean Truck Check Testing.
California Compliant.
We provide mobile CARB Clean Truck Check testing for fleets, owner-operators, and heavy-duty trucks operating in California. A certified technician brings compliance testing to your yard, terminal, route location, or our drive-in appointment point so your trucks stay legal, documented, and ready to roll — with 24/7 mobile testing available by appointment.
Certified Technician
On-Site Mobile Service
24/7 Testing
CARB
CERTIFIED
Trusted by 1,200+ fleets & owner-operators across the U.S.
Pricing
Clean Truck Check Pricing for Single Trucks and Fleets
Competitive flat rates for fast, professional service. Volume discounts kick in at 3 trucks.
Single Truck
$150per test · per truck
- CARB Clean Truck Check
- Smoke Opacity Test
- OBD Scan & Verification
- Digital Results & CARB Filing
Most Popular
Fleet Pricing
$125per truck · 3+ trucks
- Volume Discounts (10% / 15%)
- Priority Scheduling
- On-Site Fleet Day Testing
- Detailed Compliance Reports
- Dedicated Account Manager
Owner-Operator
$140per test · annual plan
- Fast & Convenient
- Mobile Service Included
- 24/7 Testing
- Annual Reminder & Re-Test
Prices may vary based on vehicle type, location, and add-on services. Quote confirmed at booking.
Mobile CARB Compliance Testing
24/7 Clean Truck Check testing for fleets, owner-operators, and California-bound trucks.
Clean Truck Check Tester provides mobile CARB Clean Truck Check testing for heavy-duty trucks, commercial fleets, owner-operators, and out-of-state carriers that operate in California. A certified technician can perform testing at your yard, terminal, job site, route stop, or at our drive-in appointment point by map pin.
This homepage is built around the core searches customers use: mobile Clean Truck Check testing, certified Clean Truck Check technician, CARB compliance testing, heavy-duty truck emissions testing, San Antonio Clean Truck Check, Austin Clean Truck Check, Texas fleet compliance, and California truck compliance.
Testing is available 24/7 by appointment. That means evening, overnight, early-morning, weekend, and urgent fleet testing requests can be handled when your truck schedule requires it, instead of forcing your vehicle to sit during normal business hours.
- ✓Mobile Clean Truck Check testing at yards, terminals, fleet locations, job sites, and route stops by a certified technician.
- ✓Drive-in appointment point available by Google Maps pin for truck owners who prefer to come to us.
- ✓Service focused on San Antonio area, Austin area, Texas-based carriers, California routes, and nationwide fleet coordination.
- ✓Support for CARB compliance, OBD-based testing when applicable, smoke opacity testing when required, and emissions documentation.
Search-Friendly Service Areas
Based in Texas. Serving San Antonio, Boerne, Spring Branch, New Braunfels, and Austin-area fleets.
Whether your truck is parked in San Antonio, Boerne, Spring Branch, New Braunfels, Bulverde, Converse, Fair Oaks Ranch, Stone Oak, The Dominion, Helotes, the Austin area, or moving between Texas and California, the compliance issue starts when the vehicle enters or operates in California. We help carriers prepare before a route becomes a problem.
Customers can request mobile testing at their location or meet at the drive-in appointment point. This gives owner-operators and fleet managers two practical options: technician comes to the truck, or the truck comes to the map pin by appointment.
San Antonio Clean Truck Check
Boerne Clean Truck Check
Spring Branch Clean Truck Check
New Braunfels Clean Truck Check
Bulverde Clean Truck Check
Converse Clean Truck Check
Fair Oaks Ranch Clean Truck Check
Stone Oak Clean Truck Check
The Dominion Clean Truck Check
Helotes Clean Truck Check
Austin Clean Truck Check
Drive-In Appointment Point
24/7 Mobile Testing
Texas Fleet Compliance
California CARB Testing
Mobile Truck Emissions Testing
Certified Clean Truck Check Technician
Heavy-Duty Truck Compliance
Built for fleets that need clear compliance support, on-site testing, certified technician service, 24/7 mobile testing availability, and a drive-in option without pulling trucks out of operation longer than necessary.
Why Choose Our Mobile Clean Truck Check Testing Service?
CARB Certified
Professionals
Your test is handled by a certified Clean Truck Check technician who follows the required process and documentation standards.
We Come to You
Mobile testing at your location — save time and keep your trucks on the move with flexible routing and scheduling.
Fast & Efficient
24/7 mobile testing requests with fast turnaround and same-day results in most cases.
Stay Compliant
Avoid fines, penalties, and out-of-service orders. We help you stay road-ready.
Who Needs Testing?
Heavy-duty trucks operating in California need Clean Truck Check compliance.
Every Class 4–8 diesel and many heavy-duty gas vehicles operating in California fall under CARB’s Clean Truck Check program — including out-of-state carriers passing through.
- Trucking Companies & Fleet Operators
- Owner-Operators & Independent Contractors
- For-Hire & Motor Carriers (intra/interstate)
- Private Fleets & Corporate Operations
- Lease Operators & Brokers
If your vehicle operates in California, the Clean Truck Check program doesn’t care where you’re based. We’ll help you stay compliant — wherever you run.
How It Works
How Mobile Clean Truck Check Testing Works
Four steps from booking to a stamped, state-reported result. No queues, no wasted miles.
1
Schedule Your Test
Book online or call anytime. Pick a time and location that fits your operation.
2
We Come to You
Your certified mobile technician arrives with the gear, calibration, and credentials needed for the test.
3
Test & Evaluate
We perform the OBD scan and smoke opacity test — connected directly to your ECU.
4
Get Compliant
Results sent same day. We file with CARB so your fleet stays road-legal — automatically.
What We Test
Clean Truck Check Testing for Heavy-Duty Vehicles and Fleets
From sleeper cabs to refuse haulers — if it runs diesel and rolls in California, a certified technician can test it.
14001+ GVWR
Sleeper & Day Cabs
Long-haul tractors, day cabs, sleepers — and everything in between.
All Configs
Tractors
Single or multiple axle configurations, including dually rigs and lift axles.
All Sizes
Straight & Box Trucks
Box trucks, flatbeds, stake beds, and last-mile delivery rigs.
Specialty
Buses & Refuse
Transit, school, refuse, and vocational fleets — your specialty is ours.
Serving the Route That Keeps America Moving
Mobile Clean Truck Check Coverage for Texas, California Routes, and Fleets
Based in Texas. Focused on California Compliance.
We help out-of-state and in-state carriers meet CARB Clean Truck Check requirements so you can roll into California with confidence.
Local mobile testing coverage includes San Antonio, Boerne, Spring Branch, New Braunfels, Bulverde, Converse, Fair Oaks Ranch, Stone Oak, The Dominion, Helotes, the Austin area, and nearby Texas routes by appointment.
Open Map Point
California
What Our Clients Say
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Trusted by Fleets, Owner-Operators, and Commercial Carriers
Real reviews from operators who keep their wheels turning thanks to certified, on-time compliance.
Fast, professional, and reliable. The process was smooth and the technician knew exactly what he was doing. Will absolutely use again.
★★★★★
Saved us time and helped us avoid potential fines. Great communication, fair pricing, and an honest crew. That’s rare these days.
★★★★★
FAQ
Clean Truck Check FAQ: Testing, Compliance, and Mobile Service
Don’t see what you’re looking for? Call us — we answer the phone.
What is the Clean Truck Check program?
CARB’s Clean Truck Check is California’s emissions compliance program for heavy-duty vehicles. It replaces the prior periodic smoke inspection rules and uses OBD plus periodic smoke tests to ensure trucks meet emissions standards.
What vehicles are required to test?
Almost all non-gasoline heavy-duty vehicles over 14,000 lbs GVWR operating in California — including out-of-state carriers passing through — fall under the program. This covers diesel, alternative-fuel, and hybrid trucks.
How often do I need to get tested?
OBD-equipped vehicles are tested twice per year. Starting October 2027, that frequency increases to four times per year. We’ll set automatic reminders so you never miss a deadline.
What happens if I fail the test?
You’ll receive a detailed failure report with the exact codes and fault data. Once repairs are completed, we return for a re-test within your compliance window.
Do you offer mobile testing?
Yes — that’s our specialty. Our certified mobile technicians come to your yard, terminal, or job site with all required equipment, calibrated and ready to roll.
How long does the test take?
Average test time is 15–20 minutes per truck. Fleet days move much faster — we line up several units back-to-back so the whole yard is tested in one visit.
Eligibility & Coverage
Does the program apply to vehicles registered outside California?
Yes. Clean Truck Check applies to both California-registered and out-of-state vehicles operating within California. If you cross the state line, you need to be compliant.
Are vehicles with under 1,000 miles per year exempt?
No. Low-annual-mileage vehicles are still subject to Clean Truck Check requirements. There is no general exemption based on miles driven per year.
Does the program cover hybrid and alternative-fuel vehicles?
Yes. Nearly all non-gasoline heavy-duty vehicles — diesel, alternative-fuel, and hybrid — over 14,000 lbs GVWR are covered.
Deadlines & Scheduling
How is my compliance deadline determined if my truck is registered out of state?
For out-of-state vehicles, the compliance deadline is based on the last digit of the vehicle’s VIN. We can help you look up your exact deadline.
How far in advance of my deadline should I test?
A passing compliance test must be submitted within 90 days ahead of your vehicle’s compliance deadline. We recommend scheduling a few weeks before to leave room for repairs if needed.
What changes are coming in October 2027?
Starting October 2027, OBD-equipped vehicles must be tested four times per year instead of two. Plan your fleet schedule accordingly — we’ll help you stay ahead.
Test Types
Which vehicles need an OBD test?
OBD testing is required for all 2013 and newer model-year diesel engines, as well as 2018 and newer alternative-fuel engines. If your truck has an OBD system that meets these criteria, that’s the test you’ll need.
Which vehicles need a smoke opacity test?
Smoke opacity testing is required for heavy-duty diesel and diesel-hybrid vehicles without OBD, including 2012 model-year and older diesel engines.
Which vehicles need only a visual emissions equipment inspection?
Non-OBD-equipped diesel vehicles, non-OBD alternative-fuel vehicles, and OBD-equipped vehicles all require a visual inspection of emissions control equipment as part of the compliance process.
What counts as an emissions-related component?
Emissions-related components include the Selective Catalytic Reduction (SCR) system, the Diesel Particulate Filter (DPF), NOx sensors, and other exhaust after-treatment hardware. All must be present, unmodified, and properly configured.
Results
Where can I see my official test results?
Official results for every test type are posted to your tester’s CTC-VIS account on cleantruckcheck.arb.ca.gov. We send you a copy of the official record once your test is submitted.
Who Can Test
Who is allowed to perform an OBD compliance test?
Only testers who have completed CARB’s CTC Tester Training and passed the exam within the last two years are authorized to perform OBD compliance tests. All our technicians are CARB-credentialed.
Who is allowed to perform a smoke opacity test?
Only testers credentialed through CARB’s training and exam process can submit smoke opacity test results to CARB. A regular shop technician or general SMOG-certified tester cannot.
Is the technician certified?
Yes. Your test is handled by a certified Clean Truck Check technician using the required process, equipment, and documentation standards.
Can I request Clean Truck Check testing 24/7?
Yes. You can submit a scheduling request anytime. Appointment confirmation depends on route, location, and fleet needs.
Failure & Compliance
What can cause a vehicle to fail the emissions equipment inspection?
A vehicle fails the visual inspection if any emissions control component is missing, modified, or not in the proper factory or retrofit configuration. We help you identify the issue and get it sorted before re-testing.
What if my Emissions Control Label (ECL) is missing or damaged?
If your ECL is missing or unreadable, you’ll need to contact the engine manufacturer to obtain a replacement label. We can guide you through the process and re-test once the new label is in place.
Don’t risk fines. Stay compliant.
Schedule your Clean Truck Check today and keep your business moving. 24/7 mobile testing is available by appointment.