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If you’re running trucks in California that are model year 2013 or newer and weigh over 14,000 pounds, you already know about the Clean Truck Check requirement. What you might not know is how fast things can go sideways if you’re not compliant.
The DMV can block your registration. CARB can hit you with fines up to $10,000 per vehicle per day. Your trucks can get pulled off the road during an inspection. For owner-operators and small fleets, that’s not just a hassle – it’s a direct threat to your livelihood.
We’re a CARB-credentialed testing facility in Corona, right in the heart of the Inland Empire’s trucking corridor. We run the emissions test, submit your results to CARB, and make sure you’re clear to operate. You get your compliance handled without the confusion, without the delays, and without risking your ability to work.
This isn’t about upselling you services you don’t need. It’s about keeping your trucks legal so you can keep moving freight.
All SMOG Motors is a CARB-credentialed Clean Truck Check facility serving Corona and the surrounding Inland Empire. We’re not a general smog shop trying to figure out heavy-duty compliance on the fly. We’re set up specifically for this – the right equipment, the right training, the right certifications.
Corona sits at the center of one of the busiest freight corridors in the country. Trucks moving between the LA ports and inland distribution centers run through here daily. We understand the pace you’re working at and the stakes if something goes wrong.
We’ve been helping truck owners and fleet operators stay compliant with California’s emissions regulations, and we’re here because this market needs people who actually understand what’s required. You’re not going to get the runaround here. You’re going to get tested, get your results submitted, and get back on the road.
You bring your truck to our facility in Corona. We verify that it’s a 2013 or newer model and over 14,000 pounds GVWR – those are the only vehicles that qualify for Clean Truck Check under current CARB regulations.
We connect to your truck’s onboard diagnostics system and run the emissions test. This isn’t a visual inspection or a tailpipe test. It’s a data pull from your truck’s computer that checks for emissions-related fault codes and system readiness. The test itself doesn’t take long, but we make sure it’s done right the first time.
Once the test is complete, we submit your results directly to CARB through their system. If you pass, you’re compliant. If there’s an issue, we’ll tell you exactly what needs to be addressed before you can retest. You can submit passing results up to 90 days before your deadline, so if you need repairs, you’ve got time to handle them without scrambling at the last minute.
You’ll get documentation showing your test was completed and submitted. Keep that for your records. If the DMV or CARB ever asks, you’ll have proof you’re current.
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This is a mandatory compliance test. As of October 1, 2024, any heavy-duty truck with a compliance deadline of January 1, 2025 or later must pass a Clean Truck Check to stay registered and legal in California. That includes California-based trucks and out-of-state trucks operating here.
You’re required to test twice a year starting in 2025. In 2027, that increases to quarterly for OBD-equipped vehicles. On top of the testing, there’s an annual compliance fee – $31.18 per vehicle in 2025. That’s separate from what you pay us for the actual test.
Here’s what matters for Corona-area operators: the Inland Empire has one of the highest concentrations of commercial trucking in the state. CARB knows that. Enforcement is active here. Roadside inspections happen. If your truck isn’t compliant and you get pulled over, you’re looking at fines, potential impoundment, and lost work time.
We handle the testing and submission. You handle making sure you’re here on time. The compliance fee gets paid through CARB’s system – we can walk you through that if you’re not sure how it works. But the bottom line is this: if you’re running a semi truck or any heavy-duty vehicle in California that meets the weight and year requirements, this isn’t optional. It’s the cost of doing business here.
Your truck qualifies if it’s model year 2013 or newer and has a gross vehicle weight rating over 14,000 pounds. That includes semi trucks, heavy-duty pickups, commercial vehicles, buses, and even privately-owned trucks that meet those specs.
It doesn’t matter if your truck is registered in California or out of state. If you operate in California and meet those criteria, you need to comply. Lighter trucks and older models aren’t part of this program – they may have different smog check requirements, but Clean Truck Check specifically applies to 2013+ and 14,000+ lbs.
If you’re not sure whether your truck qualifies, bring your registration or VIN and we can verify before you schedule. We’re not going to waste your time testing a vehicle that doesn’t need it.
Right now, you’re required to test twice a year – that’s semi-annual testing starting in 2025. In 2027, the requirement increases to quarterly testing for trucks equipped with onboard diagnostics.
Your specific deadlines are tied to your vehicle’s registration and compliance schedule. CARB tracks this through their database, and the DMV will block your registration if you’re not current. You can submit a passing test up to 90 days before your deadline, which gives you a buffer if repairs are needed.
Most operators we work with set reminders based on their registration renewal dates. If you’re running multiple trucks, you’ll need to track each one separately. Miss a deadline and you’re looking at registration holds and potential fines. It’s worth staying on top of.
If your truck fails, we’ll give you a report showing exactly what triggered the failure – usually it’s an emissions-related fault code or a system readiness issue. You’ll need to get those issues repaired before you can retest and pass.
The good news is you have up to 90 days before your compliance deadline to submit a passing test. That means if you fail early, you’ve got time to take your truck to a mechanic, get the repairs done, and come back for a retest without missing your deadline.
Failures aren’t uncommon, especially if your truck hasn’t been maintained regularly. The test is checking your emissions system, and if something’s not working right, it’ll show up. Get it fixed, come back, and we’ll retest. Just don’t wait until the last minute – if you fail the day before your deadline, you’re stuck.
You can get tested at any CARB-credentialed Clean Truck Check facility in California. We’re one of them, located in Corona. The key is making sure whoever you go to is actually credentialed – not every smog shop is set up for heavy-duty emissions testing.
CARB requires testers to complete specific training and pass an exam to get credentialed. We’ve done that. We have the equipment and the certification to run the test and submit your results directly to CARB’s system.
If you’re based in the Inland Empire or running routes through Corona, we’re convenient. If you’re elsewhere in California, find a credentialed facility near you. Just make sure they’re legit – CARB maintains a list of approved testers, and you can verify that before you show up.
Testing costs vary by facility, and we’re upfront about pricing when you call or come in. What you need to know is that the test itself is separate from the annual compliance fee CARB charges – that’s $31.18 per vehicle in 2025, and it goes directly to the state, not to us.
Some operators try to avoid the cost by skipping testing or hoping they won’t get caught. That’s a bad gamble. Fines for non-compliance can hit $10,000 per vehicle per day. Roadside enforcement is real, especially in high-traffic areas like Corona and the Inland Empire. One violation wipes out any money you thought you were saving.
Think of this as the cost of staying legal and keeping your trucks on the road. It’s required, it’s enforceable, and it’s a lot cheaper than the alternative. If you’re running a fleet, ask about our approach to multiple vehicles – we work with fleet operators regularly and understand the volume you’re dealing with.
Bring your truck, your registration, and any documentation related to your last Clean Truck Check test if you’ve had one before. We’ll need to verify your VIN, model year, and weight rating to confirm your truck qualifies.
If you’ve had recent repairs done to your emissions system, bring records of that work. It helps us understand what’s been addressed if something comes up during testing. If your check engine light is on, we need to know why – that’ll likely cause a failure, and it’s better to get it diagnosed and fixed before you come in.
Make sure your truck is in good running condition. If it’s not drivable or has major mechanical issues, get those handled first. The test checks your emissions system through the onboard computer, so if that system isn’t functioning, you won’t pass. Come prepared, and we’ll get you through the process as quickly as possible.
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