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You’re running a business, not chasing paperwork. But California’s Clean Truck Check program doesn’t care about your schedule. If your 2013 or newer heavy-duty truck isn’t tested twice a year, you’re looking at registration holds, port access denial, and fines up to $10,000 per day.
We bring CARB certified emissions testing to your location in Hermosa Beach and throughout the South Bay. Your truck gets tested where it sits. You get documentation the same day. No driving to a shop, no waiting in line, no lost revenue.
The test itself checks your emissions control systems to make sure they’re working as designed. It’s required. It’s not optional. And if you miss it, the DMV will flag your registration and CARB can pull you off the road during a roadside inspection.
We handle the testing. You handle your routes. That’s how it should work.
All SMOG Motors doesn’t test passenger cars. We don’t do light-duty vehicles. We focus exclusively on heavy-duty trucks—model year 2013 and newer, over 14,000 pounds GVWR—because that’s what CARB’s Clean Truck Check program requires specialized knowledge to handle correctly.
We’re CARB credentialed, state-licensed, and fully insured. Our testers are trained specifically on the HD/IM testing protocols that apply to your fleet. We serve Hermosa Beach, the South Bay corridor, and Los Angeles County—areas where trucking and logistics keep the economy moving.
You’re in one of the busiest freight zones in California. We’re positioned here because we understand what’s at stake when a truck goes down or loses port access. Time matters. Compliance matters. We handle both.
You call or book online. We confirm your truck qualifies—2013 or newer, over 14,000 pounds GVWR. If it doesn’t meet those specs, we’ll tell you upfront. No wasted time.
We schedule a mobile appointment at your yard, terminal, or job site in Hermosa Beach or anywhere in our South Bay service area. Same-day and next-day slots are usually available. Our CARB certified tester arrives with all the equipment needed to perform the full HD/IM emissions test on-site.
The test takes about 30 to 45 minutes depending on the vehicle. We’re checking your diesel particulate filter, NOx sensors, exhaust systems, and onboard diagnostics to verify everything meets CARB standards. If your truck passes, you get documentation immediately. We submit results directly to CARB and the DMV so your compliance record updates without you lifting a finger.
If something flags during the test, we’ll walk you through what needs attention. You’ll know exactly what the issue is and what it takes to fix it before you retest. No surprises. No runaround.
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CARB compliance isn’t just a sticker. It’s proof your truck’s emissions systems are functioning, your registration stays active, and you maintain access to California ports through the Ports Drayage Truck Registry. Lose compliance and you lose access. It’s that simple.
Every Clean Truck Check test we perform covers your diesel particulate filter performance, nitrogen oxide output, exhaust gas recirculation, and onboard diagnostic system health. These are the components CARB monitors because heavy-duty diesel trucks account for over 50% of NOx pollution from mobile sources in California—even though they’re only 3% of vehicles on the road.
Testing is required twice per year right now. That frequency will increase to four times annually as the program matures. The annual compliance fee for 2025 is $31.18 per vehicle, and that’s separate from the test itself. You’re responsible for reporting, fee payment, and emissions testing. We handle the testing portion so you can check that box and move on.
Hermosa Beach sits in the heart of LA County’s logistics corridor. If you’re running freight to the ports, through the South Bay, or across state lines into California, this applies to you—even if your truck is registered out of state. CARB rules follow the vehicle, not the registration.
Yes. If your truck operates in California, it has to comply with CARB rules regardless of where it’s registered. The Clean Truck Check program applies to all heavy-duty vehicles over 14,000 pounds GVWR, model year 2013 and newer, that drive on California roads.
Out-of-state operators get tripped up on this constantly. They assume their home state registration exempts them. It doesn’t. CARB monitors compliance through roadside emissions devices and port access systems. If you’re flagged and can’t show a passing test, you’ll be issued a Notice to Submit to Testing—and you’ll have a limited window to comply before penalties kick in.
We test trucks from Nevada, Arizona, Oregon, and beyond. As long as your truck meets the year and weight requirements, we can handle the test in Hermosa Beach and get your compliance documentation filed with CARB the same day.
Right now, twice per year. CARB’s Clean Truck Check program requires biannual testing for all qualifying trucks—2013 and newer, over 14,000 pounds GVWR. That frequency is designed to catch emissions system degradation before it becomes a major problem.
Eventually, testing will move to four times per year. CARB hasn’t locked in that timeline yet, but it’s coming. The goal is to keep emissions control systems operating at full efficiency as vehicles age, since even small drops in performance lead to significant pollution increases across a fleet.
Missing a test triggers a registration hold with the DMV. You won’t be able to renew until you submit a passing result. If you’re caught operating without current compliance, fines start at $1,000 and can climb to $10,000 per day depending on the violation. It’s cheaper and faster to just stay on schedule.
You’ll get a detailed report showing exactly what flagged. Most failures involve diesel particulate filter issues, faulty NOx sensors, or problems with exhaust gas recirculation systems. These are repairable, but they require a qualified diesel mechanic who understands emissions controls.
Once repairs are done, you retest. There’s no penalty for failing the test itself—the penalty comes if you keep operating without a passing result. CARB gives you time to fix the issue and retest, but that window isn’t unlimited. If you’re flagged during a roadside inspection or at a port, enforcement moves faster.
We don’t perform repairs, but we’ll tell you exactly what needs attention so you’re not guessing. Some shops will try to sell you parts you don’t need. We just test and report. You take that information to a mechanic you trust, get it fixed, and we retest when you’re ready.
Usually, yes. We keep same-day and next-day slots open specifically for fleet operators and owner-operators who need fast turnaround. Mobile testing means we come to your yard, terminal, or job site—you don’t lose half a day driving to a testing station and waiting in line.
Our service area covers Hermosa Beach, Manhattan Beach, Redondo Beach, Torrance, and the broader South Bay. If you’re running trucks through the LA County logistics corridor or in and out of the ports, we’re positioned to reach you quickly.
Each test takes 30 to 45 minutes. We bring all the diagnostic equipment and perform the full HD/IM inspection on-site. You get results immediately, and we file everything with CARB and the DMV electronically. Your compliance record updates without you having to submit paperwork or follow up.
Regular smog checks are for passenger vehicles and light-duty trucks under 14,000 pounds. CARB compliance testing—officially called Clean Truck Check or HD/IM testing—is specifically for heavy-duty diesel and alternative fuel trucks over 14,000 pounds GVWR, model year 2013 and newer.
The equipment is different. The standards are different. The testing protocols are different. Most smog shops can’t perform Clean Truck Check tests because they’re not set up for heavy-duty vehicles and their techs aren’t CARB credentialed for HD/IM work.
You need a tester who’s completed CARB’s Heavy-Duty Inspection and Maintenance training and passed the certification exam. That’s what we do. We don’t test cars. We don’t test older trucks. We focus entirely on the vehicles that fall under California’s Clean Truck Check program, and we bring that service directly to you in Hermosa Beach and throughout the South Bay.
Yes. The Clean Truck Check program applies to all heavy-duty trucks operating in California, regardless of whether you’re running long haul, regional routes, or strictly local deliveries within Hermosa Beach and the South Bay. If your truck is 2013 or newer and weighs over 14,000 pounds GVWR, it’s covered.
Local operators sometimes assume they fly under the radar because they’re not crossing state lines or hitting the ports. But CARB uses roadside emissions monitoring devices throughout California to screen for high-emitting vehicles. If your truck gets flagged, you’ll receive a Notice to Submit to Testing—and you’ll have a short compliance window before penalties start.
Even if you never get flagged on the road, the DMV will place a registration hold if you don’t have current test results on file. That means no renewal until you comply. It’s easier to stay ahead of it with regular testing than to scramble when your registration is frozen or you’re hit with a violation notice.
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