Hear from Our Customers
Your truck isn’t making money when it’s grounded. And that’s exactly what happens when CARB compliance lapses—DMV puts a registration hold on your vehicle, and you’re done operating in California until you fix it.
The fines aren’t small either. Depending on the violation, you’re looking at anywhere from $1,000 to $75,000 per day. For fleet operators, those numbers stack fast. And if you’re a shipper hiring non-compliant carriers, you’re on the hook for up to $10,000 per year per carrier.
This isn’t about paperwork. It’s about keeping your business running without the constant fear that one missed test or one overlooked deadline is going to cost you weeks of income and thousands in penalties. You need clean truck check testing done right, on time, and without the runaround. That’s what CARB diesel compliance looks like when it’s handled correctly.
We operate right here in San Jacinto, serving owner-operators and fleet managers who run heavy-duty trucks through Riverside County and across California. We’re not a general smog shop trying to figure out HD I/M testing on the fly.
Our focus is CARB certified smog check services specifically for trucks that are model year 2013 or newer with a GVWR over 14,000 pounds. That’s it. We don’t waste your time with services that don’t apply to your rig, and we don’t pretend to be experts in areas we’re not.
San Jacinto sits right in the middle of major trucking routes, and we understand what’s at stake when compliance deadlines hit. You’re not just another ticket number here—you’re running a business, and downtime isn’t an option.
First, we verify your truck qualifies—2013 or newer model year, over 14,000 lbs GVWR. If it doesn’t meet both criteria, this isn’t the right test for your vehicle. No guessing, no assumptions.
Once confirmed, we run the emissions compliance test using CARB-approved equipment that meets SAE J1667 specifications. This is the same opacity testing equipment government enforcement uses, so there’s no discrepancy between what we measure and what CARB expects. The test checks your diesel emissions against California’s heavy-duty vehicle compliance standards.
If your truck passes, you get documentation proving compliance that satisfies DMV registration requirements and keeps you clear of enforcement actions. If it doesn’t pass, we’ll tell you exactly what’s out of spec so you can get it fixed and retested. Most operators need this done twice a year minimum, and trucks with 2013+ engines will eventually need testing four times annually. We keep track of your schedule so you’re not scrambling at renewal time.
Ready to get started?
You’re getting a full CARB emissions testing appointment conducted by credentialed testers who’ve completed the official CARB Training and Authorization System. That’s not optional—only authorized testers who’ve passed the exam can legally perform clean truck check inspections in California.
The test itself measures opacity and ensures your semi truck meets the nitrogen oxides and particulate matter standards that CARB enforces. These aren’t arbitrary numbers. Heavy-duty trucks over 14,000 lbs make up just 3 percent of vehicles on California roads but account for more than 50 percent of NOx and fine particle diesel pollution from mobile sources statewide. That’s why the regulations exist, and that’s why enforcement is strict.
Here in San Jacinto and across Riverside County, commercial trucking is a major part of the local economy. You’re moving freight through some of the busiest corridors in the state, and staying California CARB compliant isn’t just about avoiding fines—it’s about protecting your ability to operate. We price individual vehicle testing at $199, with fleet discounts available depending on how many trucks you’re running. The cost of the test is a fraction of what one day of fines or lost work would run you.
Only heavy-duty trucks with a gross vehicle weight rating over 14,000 pounds and a model year of 2013 or newer are subject to California’s HD I/M emissions compliance testing. Both conditions have to be true. If your truck is older than 2013, or if it’s under 14,000 lbs GVWR, this testing requirement doesn’t apply to you.
The regulation kicked in October 1, 2024, and all compliance deadlines on or after January 1, 2025, require submission of a passing emissions test. Most qualifying trucks need testing twice a year. Eventually, trucks with 2013 or newer engines will be required to test four times annually.
If you’re unsure whether your truck qualifies, check your registration or give us the VIN. We’ll confirm whether you need the test before scheduling anything.
If your truck doesn’t pass, the DMV can place a registration hold, which means you can’t renew your registration or legally operate the vehicle in California until the issue is resolved. You’re effectively grounded until you fix whatever caused the failure and pass a retest.
The test measures opacity and checks whether your diesel emissions meet CARB’s standards for nitrogen oxides and particulate matter. If something’s out of spec—whether it’s a faulty sensor, a clogged filter, or an emissions system malfunction—you’ll need to get it repaired and come back for another test.
Fines for operating a non-compliant truck range from $1,000 to $75,000 per day depending on the severity and duration of the violation. That’s not a scare tactic—that’s what CARB enforcement actually levies. The cost of fixing the problem and retesting is always going to be cheaper than the cost of ignoring it.
Unlike light-duty smog checks, California doesn’t require heavy-duty trucks to go to a brick-and-mortar testing station. Mobile clean truck check services are allowed, which means testing can come to you if that’s more convenient for your operation.
We offer mobile testing so you don’t have to spend time driving to a facility and waiting in line. We bring CARB-certified equipment to your location, run the emissions compliance test on-site, and provide the same documentation you’d get at a fixed station.
This is especially useful for fleet operators managing multiple trucks or for owner-operators who can’t afford to take a rig out of service for half a day. The test itself doesn’t take long, but eliminating the drive and the wait saves you real time and keeps your truck closer to the road.
We charge $199 per vehicle for individual CARB emissions testing. If you’re running a fleet, we offer discounts based on the number of trucks you need tested. The pricing is straightforward—no hidden fees, no surprise charges after the fact.
Compare that to the cost of non-compliance. A single day of fines can run up to $75,000. A registration hold means your truck isn’t generating revenue until you fix the problem. And if you’re a shipper hiring non-compliant carriers, you’re facing up to $10,000 in fines per carrier per year.
The test is required twice a year for most qualifying trucks, and eventually four times a year for 2013+ engines. Budget for it like you budget for fuel and maintenance—it’s not optional, and trying to skip it costs more than just paying for the test in the first place.
The actual emissions compliance test doesn’t take long—usually under an hour once we’re on-site or once your truck is in position. The test measures opacity using equipment that conforms to SAE J1667 specifications, the same standard CARB enforcement uses.
What takes longer is scheduling, paperwork, and making sure your truck qualifies before we start. That’s why we confirm your model year and GVWR upfront. If your truck is 2012 or older, or under 14,000 lbs, we’re not going to waste your time running a test that doesn’t apply.
Once the test is done and your truck passes, you get documentation immediately. That paperwork is what satisfies DMV registration requirements and proves compliance if you’re ever stopped for inspection. Keep it with your vehicle records and make sure it’s up to date before your renewal deadline hits.
If your truck is registered out of state but operates in California, you still need to comply with CARB truck regulations while you’re here. California doesn’t exempt out-of-state commercial vehicles from emissions standards just because they’re not registered locally.
The testing requirement applies to any heavy-duty truck over 14,000 lbs GVWR with a 2013 or newer engine that operates on California roads. If you’re running freight through Riverside County, Los Angeles, or anywhere else in the state on a regular basis, you need to stay compliant or risk fines and enforcement actions.
CARB enforcement doesn’t just check at weigh stations—they conduct roadside inspections, and non-compliant trucks get flagged fast. If you’re based out of state but run California routes frequently, it’s worth getting tested here in San Jacinto before you have a problem. We’ll make sure your truck meets California CARB compliant standards so you can operate without looking over your shoulder.
Local Resources
Useful Links
Other Services we provide in San Jacinto
