Hear from Our Customers
You already know what’s at stake. Non-compliance with California’s Clean Truck Check program means fines that start at $1,000 and can hit $10,000 per vehicle per day. It means DMV registration holds that take your trucks off the road. It means losing access to California loads—and in a logistics hub like Perris, that’s not a risk you can afford to take.
Your trucks need to pass CARB emissions testing twice a year if they’re model year 2013 or newer with a GVWR over 14,000 pounds. That’s the law. But finding a CARB certified smog check provider who actually understands heavy-duty diesel compliance, who won’t waste your time, and who can work around your schedule? That’s harder than it should be.
When you work with a credentialed tester who knows the regulations inside and out, you’re not just checking a box. You’re protecting your business from penalties that compound daily, keeping your fleet on the road, and maintaining access to the California market that keeps your operation profitable.
We didn’t learn about trucks from a manual. We spent 25 years as owner-operators in the construction industry before we ever started testing vehicles. We know what it’s like to manage a fleet, deal with unexpected downtime, and navigate regulations that seem designed to confuse you.
We’re CARB credentialed, state licensed, and fully insured—which already puts us ahead of most mobile testers operating in California. We serve Perris and the surrounding Riverside County area because we understand this market. You’re dealing with I-215 traffic, tight delivery windows, and the constant pressure to keep trucks moving in one of Southern California’s busiest logistics corridors.
We’ve worked with single-truck operators and enterprise fleets. We’ve helped clients negotiate lower penalties when they’ve gotten sideways with CARB. And we’ve built our reputation on being straight with people about what they actually need—not what we can sell them.
First, we verify your truck qualifies for testing—2013 or newer, over 14,000 pounds GVWR. If you’re running older or lighter vehicles, this program doesn’t apply to you, and we’ll tell you that upfront instead of wasting your time.
Once we confirm eligibility, we schedule your emissions testing around your operation, not ours. We can come to your location in Perris or meet you at a time that doesn’t pull your truck out of service during peak hours. The actual CARB emissions testing process involves connecting to your vehicle’s onboard diagnostics, checking that your emissions control equipment is functioning properly, and verifying there are no active fault codes that would trigger a failure.
If your truck passes, you get your Clean Truck Check certificate on the spot. That certificate needs to be submitted to CARB, and it’s valid for six months—which means you’re looking at this process twice a year. If there’s an issue, we’ll explain exactly what’s wrong, what it’ll take to fix it, and what your options are. No runaround, no upselling—just the information you need to make a decision.
The whole process typically takes 30 to 45 minutes per vehicle if everything’s in order. We handle the paperwork, submit your compliance documentation, and make sure you’re square with CARB so you can get back to work.
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California’s Clean Truck Check program applies to nearly every heavy-duty diesel and alternative fuel truck operating in the state. If your truck is model year 2013 or newer and weighs over 14,000 pounds, you’re required to complete emissions testing every six months. This isn’t a suggestion—it’s enforced through DMV registration blocks and escalating fines.
In Perris, you’re operating in a market where logistics and freight movement drive the local economy. The March Field Air Reserve Base, the Perris Valley Commerce Center, and the constant flow of goods through Riverside County mean there’s a high concentration of heavy-duty trucks on the road. CARB knows this, and enforcement has gotten significantly stricter since the program’s full rollout in 2025.
You’re also dealing with out-of-state trucks that need California compliance if they’re operating here regularly. The rules apply whether you’re based in Perris or just passing through—if you’re doing business in California with a qualifying vehicle, you need a valid Clean Truck Check certificate. That means out-of-state operators need to plan ahead, because showing up at a weigh station without proof of compliance will cost you more than the test ever would.
The testing itself focuses on your emissions control systems—your diesel particulate filter, your selective catalytic reduction system, and your onboard diagnostics. If any of those systems aren’t working correctly, you’ll fail. And if you’ve deleted or tampered with emissions equipment, you’re looking at penalties that go well beyond the standard fines.
Your truck needs CARB emissions testing if it meets two criteria: it’s model year 2013 or newer, and it has a gross vehicle weight rating over 14,000 pounds. Both conditions have to be true. If you’re running a 2012 or older truck, you’re not subject to the Clean Truck Check program. If your truck weighs less than 14,000 pounds, same thing—you’re exempt.
This applies to diesel trucks, natural gas trucks, and other alternative fuel heavy-duty vehicles. It doesn’t matter if you’re an owner-operator with one truck or a fleet manager with 50—the rules are the same. And it doesn’t matter if your truck is registered in California or another state. If you’re operating in California with a qualifying vehicle, you need to comply.
The easiest way to confirm is to check your vehicle registration or door placard for the GVWR and model year. If you’re still not sure, call us. We’ll tell you straight whether your truck qualifies or not, and we won’t try to sell you a service you don’t need.
If your truck fails, you’ll get a detailed explanation of why. Most failures come down to fault codes in the onboard diagnostics system or issues with emissions control equipment like the diesel particulate filter or SCR system. We’ll walk you through what’s flagged and what needs to be addressed before you can pass.
You’ll need to get the issue repaired, then come back for a retest. The good news is that once you know what’s wrong, you can make an informed decision about how to handle it. Some repairs are simple and inexpensive. Others might require more significant work, especially if you’ve been running with a check engine light for a while.
Here’s what you need to understand: you can’t just ignore a failed test. CARB tracks this, and if you don’t resolve it and retest, you’re looking at registration holds and fines. The clock starts ticking the moment you’re out of compliance. We’ve worked with clients who’ve gotten behind on this, and the penalties add up fast—$1,000 to $10,000 per vehicle per day depending on the violation. Get it fixed, get retested, and get back in compliance before it becomes a bigger problem.
If your truck qualifies for the Clean Truck Check program, you need emissions testing every six months. That’s twice a year, and CARB tracks your compliance dates. If you miss a deadline, you’re out of compliance, and that triggers penalties and potential DMV registration issues.
The six-month clock starts from your last test date, so it’s on you to stay on top of the schedule. A lot of fleet managers set reminders or work with a testing provider who can automate scheduling. That’s something we offer—we’ll track your compliance dates and reach out when you’re coming up on a deadline so you’re never caught off guard.
This is one of those things that’s easy to let slip when you’re busy, but the consequences aren’t worth it. Missing a test date by even a few days can mean fines and registration holds that take your truck out of service. Plan ahead, build it into your maintenance schedule, and treat it like any other critical deadline. It’s a hassle, but it’s a lot less of a hassle than dealing with CARB enforcement after the fact.
Yes. We run mobile testing units specifically so we can come to you instead of pulling your trucks out of service to drive somewhere. If you’re operating a fleet in Perris or you’ve got trucks staged at a yard, warehouse, or job site, we can schedule testing on-site.
This is especially useful if you’re managing multiple vehicles or if your trucks are on tight schedules. Instead of losing half a day per truck driving to a testing station, waiting in line, and driving back, we bring the equipment to you and knock out testing during downtime or shift changes.
We serve Perris and the surrounding Riverside County area, and we’re set up to handle everything from single trucks to full fleet testing. The process is the same whether we’re at your location or ours—we just save you the time and hassle of coordinating logistics. If mobile testing makes sense for your operation, we’ll make it work. If it’s easier for you to come to us, that’s fine too. We’re flexible because we know your schedule doesn’t revolve around smog checks.
CARB penalties for non-compliance start at $1,000 per vehicle and can go as high as $10,000 per vehicle per day depending on the severity and duration of the violation. And those fines compound daily, which means if you’re out of compliance for a week, you’re not looking at a $10,000 fine—you’re looking at $70,000 for one truck.
On top of the fines, CARB can place a hold on your vehicle registration through the DMV. That means you can’t renew your registration, and if you’re caught operating without valid registration, you’re adding more violations on top of the compliance issue. It’s a mess that spirals quickly.
We’ve worked with clients who’ve gotten hit with penalties, and in some cases, we’ve been able to help negotiate lower amounts by getting them into compliance quickly and demonstrating good faith. But the best approach is to avoid the fines altogether. The cost of testing twice a year is a fraction of what you’ll pay in penalties if you let it slide. And beyond the money, you’re risking your ability to operate in California, which for most trucks running through Perris and Riverside County, means losing access to your primary market.
Yes, if your truck meets the criteria—2013 or newer, over 14,000 pounds GVWR—and you’re operating in California, you need to comply with the Clean Truck Check program. It doesn’t matter where your truck is registered. If you’re doing business in California, CARB’s rules apply to you.
This catches a lot of out-of-state operators off guard, especially if they’re used to their home state’s regulations. But California doesn’t make exceptions for out-of-state vehicles. You need a valid Clean Truck Check certificate, and you need to maintain compliance on the same six-month schedule as California-registered trucks.
If you’re running regular routes into California, you need to plan for this. That means scheduling testing before you cross the state line, keeping your certificate current, and understanding that CARB enforcement happens at weigh stations, border checkpoints, and roadside inspections. Getting pulled over without proof of compliance will cost you time, money, and potentially your load. We work with out-of-state operators regularly, and we can coordinate testing when you’re in the Perris area or help you get compliant before your next California run. Don’t assume you’re exempt just because your truck isn’t registered here—you’re not.
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