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You’re running a business, not studying CARB regulations. But here’s what matters: if your trucks aren’t compliant, the DMV puts a hold on your registration. Your vehicles get sidelined. And the fines start stacking—up to $10,000 per vehicle, per day.
That’s not a scare tactic. That’s the actual penalty structure for non-compliant heavy-duty vehicles in California. In 2022 alone, CARB collected over $21.5 million in penalties from 8,293 cases.
We handle CARB compliance testing for trucks that are model year 2013 or newer with a GVWR over 14,000 pounds. Mobile service means we come to your yard in Palmdale, test your fleet on-site, and submit passing results directly to CARB and the DMV. You don’t lose a day of operation. You don’t gamble with registration holds. You stay compliant, and your trucks keep running.
All SMOG Motors has helped over 7,000 trucking companies maintain CARB compliance across California. We’re state-licensed HD I/M testers, CARB credentialed, and we’ve been serving fleets in Palmdale and throughout Los Angeles County for years.
Palmdale sits right on CA-14 and CA-138—major corridors for freight moving through Southern California. The trucking companies here support aerospace, manufacturing, and agriculture. They can’t afford downtime, and they don’t have time to figure out CARB’s regulatory maze.
That’s where we come in. We know the testing requirements. We know the deadlines. And we know how to keep your fleet moving without the stress of compliance falling on your plate.
First, you schedule a time that works for your operation. We bring our mobile testing unit to your location in Palmdale—your yard, your facility, wherever your trucks are parked.
Our CARB credentialed tester connects to your truck’s OBD system using J1939 or J1979 connectors, depending on your vehicle. The test checks emissions output against California’s heavy-duty standards. If your truck passes, we submit the results directly to CARB through the CTC-VIS system. That updates your vehicle record with both CARB and the DMV, showing you’re compliant.
The whole process takes about 30 minutes per truck. You get instant reporting. Your compliance deadline gets extended by six months. And if there’s an issue, we’ll walk you through what needs to happen next—whether that’s a repair, a retest, or documentation support.
This isn’t complicated once someone who knows the system handles it for you. That’s what we do.
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You’re getting mobile CARB emissions testing performed by a credentialed tester who’s completed CARB’s HD I/M training course and passed the certification exam. That’s not optional—it’s a state requirement, and it’s how you know the test will hold up if CARB ever audits your records.
You’re also getting same-day or next-day service in most cases across Palmdale and Los Angeles County. We’re not making you wait two weeks or drive your trucks somewhere. We come to you, test on-site, and submit results immediately.
And here’s what matters for your operation: every passing test we submit extends your compliance deadline by six months. That means you’re not scrambling every few months. You’re on a predictable schedule. Your registration stays active. Your trucks stay on the road.
One more thing—this service applies only to trucks that are model year 2013 or newer and have a GVWR over 14,000 pounds. If your fleet includes older or lighter vehicles, this isn’t the right testing program. CARB’s HD I/M requirements are specific, and we only test vehicles that fall under those rules.
If your truck doesn’t pass, you’ll get a detailed report showing exactly what triggered the failure. Most failures come from sensor malfunctions, exhaust system issues, or OBD communication errors—not catastrophic engine problems.
You’ll have time to make repairs before your compliance deadline hits. Once the issue is fixed, we can retest the vehicle. If it passes the second time, we submit those results to CARB and your record gets updated.
The key is not to wait until the last minute. If you’re within 90 days of your deadline and you fail, you’re cutting it close. Schedule early, and if something needs attention, you’ll have time to handle it without risking a registration hold or penalty.
Right now, all commercial diesel, hybrid, and alternative fuel vehicles with a GVWR over 14,000 pounds must be tested every six months. Your compliance deadline is set by CARB based on your vehicle’s registration and previous test dates.
Starting in 2027, testing frequency increases to quarterly for most heavy-duty vehicles. That’s a significant change, and it means fleet operators will need to build testing into their regular maintenance schedules even more tightly than they do now.
You’ll receive a 30-day notice from CARB before your deadline. Don’t ignore it. If you miss the deadline, the DMV can place a hold on your registration, and your truck gets pulled from service until you’re compliant again. It’s easier to stay ahead of it than to fix it after the fact.
No. The CARB HD I/M program—and our mobile testing service—only applies to trucks that are model year 2013 or newer with a GVWR over 14,000 pounds. That’s because CARB’s testing protocol requires OBD systems with J1939 or J1979 connectors, which weren’t standard on heavy-duty vehicles before 2013.
If your fleet includes older trucks, they may fall under different emissions requirements, but they’re not part of the Clean Truck Check program. You’ll need to check with CARB or your registration paperwork to see what applies to those vehicles.
This isn’t a limitation we’ve set—it’s how CARB designed the program. We follow their rules exactly, which is why our tests hold up and why your compliance record stays clean when we handle it.
CARB can fine you up to $10,000 per vehicle, per day for non-compliance. If you’re running a fleet of 10 trucks and you’re 30 days late, that’s $3 million in potential penalties. It’s not theoretical—CARB collected $21.5 million in fines in 2022 alone.
Beyond fines, the DMV will place a registration hold on non-compliant vehicles. That means you can’t renew your plates, and technically, your truck isn’t supposed to be on the road. If you get pulled over or hit a weigh station, that hold shows up, and you’re looking at additional enforcement action.
The financial hit is one thing. The operational disruption is another. If your trucks are sidelined, you’re missing deliveries, losing contracts, and scrambling to cover routes. Staying compliant isn’t just about avoiding penalties—it’s about keeping your business running without interruption.
Yes. We bring our mobile testing unit to your location anywhere in Palmdale and throughout Los Angeles County. Whether your trucks are parked at your yard, a job site, or a maintenance facility, we come to you.
Mobile testing means you’re not losing half a day driving trucks to a testing center and waiting in line. We schedule around your operation, test on-site, and move through your fleet efficiently. For most fleets in the Palmdale area, we can offer same-day or next-day service depending on availability.
Palmdale’s position along CA-14 and CA-138 makes it a hub for freight and logistics. We’ve worked with fleets throughout this area, and we understand the pace you’re operating at. Mobile service is built for that—minimum downtime, maximum convenience, and compliance handled without disrupting your schedule.
CARB sends a 30-day notice to the registered owner before your compliance deadline. That notice will tell you which vehicles need testing and when the deadline falls. If you’re not sure, you can also check your vehicle’s compliance status on CARB’s website using your VIN or license plate number.
Your compliance deadline is based on your truck’s registration date and the last time it was tested. Once you pass a test, your next deadline is six months out. If you’ve never been tested under the HD I/M program, your first deadline is tied to your registration renewal cycle.
Don’t wait for the notice to show up a week before the deadline. If you know your trucks fall under CARB’s requirements—2013 or newer, over 14,000 pounds GVWR—get ahead of it. Schedule testing 60 to 90 days out, and you’ll have breathing room if anything needs attention.
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