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If you’re running trucks over 14,000 pounds in California, you already know the stakes. CARB compliance isn’t optional anymore. The Clean Truck Check program started enforcement in October 2024, and the DMV is already placing registration holds on non-compliant vehicles.
The penalties aren’t small. You’re looking at up to $10,000 per vehicle, per day if you’re caught operating without a passing test. That’s not a scare tactic—that’s the actual fine structure. And if you ignore a Notice to Submit to Testing, you’ve got 30 days before your registration gets frozen.
What you need is simple: a certified tester who knows the 2013-and-newer diesel and alternative fuel truck requirements, can run the test correctly, and gets your results filed with CARB the same day. That’s what keeps your trucks moving and your business running. You don’t need the runaround. You need it done right, documented properly, and uploaded to the system so the state has no reason to flag your registration.
All SMOG Motors is a CARB-credentialed testing facility in La Mirada, CA. We’ve completed the official CARB Tester Training Course and passed the certification exam, which means we’re authorized to perform Clean Truck Check inspections and submit results directly into the state system.
We focus exclusively on heavy-duty vehicles that fall under the new HD I/M program—trucks manufactured in 2013 or later with a gross vehicle weight rating over 14,000 pounds. If your truck doesn’t meet those specs, this program doesn’t apply to you. We’re not going to waste your time or ours testing vehicles that aren’t required to comply.
La Mirada sits right in the heart of Los Angeles County’s commercial trucking corridor. We see owner-operators, small fleets, and out-of-state drivers every week who need fast, accurate CARB emissions testing without the confusion. You’re not our first rodeo, and we’re not learning the regulations on your dime.
First, we verify your truck qualifies—model year 2013 or newer, over 14,000 pounds GVWR. If it doesn’t meet both criteria, you’re not subject to this program and you don’t need the test. If it does, we move forward.
We’ll inspect your emission control systems using CARB-approved diagnostic equipment. This isn’t a visual check or a quick scan. We’re testing whether your diesel particulate filter, selective catalytic reduction system, and onboard diagnostics are functioning as required by California law. The test takes about 30 to 45 minutes depending on your truck’s configuration.
Once the test is complete, you’ll get your results immediately. If you pass, we upload the certification to the Clean Truck Check Vehicle Inspection System (CTC-VIS) portal that same day. That’s the database the DMV checks when you renew your registration. If your truck doesn’t pass, we’ll tell you exactly what failed and why. We offer 50% off retests, and we can help you figure out what needs repair before you come back.
You walk out with documentation in hand, your compliance on file with the state, and no registration hold hanging over your head.
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You’re paying for a state-mandated emissions inspection performed by a certified tester, submitted to CARB’s official database, and recognized by the California DMV. That’s not negotiable—it has to be done by someone with credentials, and it has to be filed correctly, or it doesn’t count.
Here’s what’s included: full diagnostic testing of your emission control systems, a written report of your results, same-day submission to the CTC-VIS portal, and a compliance certificate if you pass. If you fail, you get a detailed breakdown of what’s wrong and 50% off your retest when you come back. We also provide free assistance registering your vehicle in the CTC-VIS system if you haven’t done that yet.
In La Mirada and the surrounding Los Angeles County area, the trucking industry is massive—and so is the enforcement. CARB estimates this program will prevent 7,500 air quality-related deaths and deliver $75 billion in health benefits by 2050. That’s why the state is serious about compliance. They’re not issuing warnings anymore. They’re issuing fines and registration holds. Your test results need to be in the system, and they need to be accurate. That’s what you’re getting here.
Your truck needs a Clean Truck Check test if it meets two criteria: it’s model year 2013 or newer, and it has a gross vehicle weight rating over 14,000 pounds. This applies to diesel and alternative fuel vehicles, and it doesn’t matter if your truck is registered in California or out of state. If you operate it in California and it fits those specs, you’re required to test.
The program officially started enforcement on October 1, 2024. As of August 2024, the DMV began placing registration holds on vehicles that hadn’t passed inspection. If you get a Notice to Submit to Testing in the mail, you have 30 days to provide passing results from a certified tester. Ignoring it leads to fines and a frozen registration.
If your truck is older than 2013 or weighs less than 14,000 pounds, this regulation doesn’t apply to you. Don’t let anyone tell you otherwise.
If your truck fails, you’ll get a written report that explains exactly what didn’t pass. Most failures involve issues with the diesel particulate filter, the selective catalytic reduction system, or onboard diagnostic codes that indicate tampering or malfunction. We don’t guess—we test the actual emission control components CARB requires.
You’re not allowed to operate the vehicle in California until it’s brought into compliance. That means you’ll need to get the necessary repairs done by a qualified mechanic, then bring the truck back for a retest. We offer 50% off retests, so you’re not paying full price twice.
The key is not to ignore a failure. CARB can issue fines up to $10,000 per vehicle, per day for non-compliance, and the DMV will hold your registration until you submit passing results. Get it fixed, get it retested, and get it filed. That’s the only way to stay legal.
Pricing varies depending on the testing facility and your truck’s configuration, but you’re typically looking at a few hundred dollars for the inspection. That includes the diagnostic testing, the report, and the submission of your results to the state database. It’s not cheap, but it’s a lot cheaper than a $10,000-per-day fine or losing weeks of work because your registration is on hold.
We’re upfront about cost before we start the test. There are no surprise fees, and if your truck fails and needs a retest, we offer 50% off the second inspection. Some shops will charge you full price every time—we don’t.
Think of it this way: you’re not paying for the test itself. You’re paying to avoid penalties, keep your registration active, and stay on the road legally. The cost of non-compliance is exponentially higher than the cost of getting tested.
Only CARB-credentialed testers are authorized to perform Clean Truck Check inspections. That means the person running your test has to have completed CARB’s official Tester Training Course and passed the certification exam. If they haven’t, the test doesn’t count, and your results won’t be accepted by the state.
All SMOG Motors is a certified testing facility in La Mirada, CA. We’ve completed the required training, we’re listed in CARB’s credentialed tester database, and we submit results directly to the CTC-VIS portal that the DMV uses to verify compliance. That’s not something every shop can do.
Before you book a test anywhere, ask if they’re CARB-certified for the Clean Truck Check program. If they can’t show proof, walk away. You’ll waste your time and money on a test that won’t satisfy the state’s requirements.
Yes. The Clean Truck Check program applies to all heavy-duty vehicles operating in California, regardless of where they’re registered. If you’re an out-of-state trucker running routes through California with a 2013-or-newer truck over 14,000 pounds, you’re subject to the same testing requirements as California-registered vehicles.
CARB doesn’t care what state your plates are from. If you’re operating on California roads, you need to comply with California emissions regulations. That means getting tested by a certified facility and having your results on file in the CTC-VIS system.
If you’re based out of state and only pass through California occasionally, you still need the test. CARB can pull you over, check your compliance status, and issue fines on the spot if you’re not in the system. Don’t assume you’re exempt just because your truck isn’t registered here. You’re not.
The testing frequency depends on your truck’s age and usage, but most heavy-duty vehicles under the Clean Truck Check program are required to test annually. CARB will send you a Notice to Submit to Testing when your truck is due. Once you receive that notice, you have 30 days to get tested and submit passing results.
If you don’t receive a notice, that doesn’t mean you’re off the hook. It’s your responsibility to stay compliant. The DMV checks the CTC-VIS database when you renew your registration, and if there’s no passing test on file, they’ll place a hold until you provide one.
Some fleets with newer trucks or lower mileage may qualify for less frequent testing, but that’s determined by CARB based on your vehicle’s profile in their system. Don’t guess. If you’re unsure when your truck is due, check the CTC-VIS portal or bring your registration paperwork in and we’ll help you figure it out.
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