Hear from Our Customers
If you’re running heavy-duty trucks in California, you already know the drill. CARB regulations aren’t optional, and missing a compliance deadline means your registration gets held, your trucks sit idle, and your business loses money.
Clean Truck Check testing is now mandatory for diesel, hybrid, and alternative-fuel trucks model year 2013 or newer with a GVWR over 14,000 pounds. You need passing emissions tests submitted twice a year—and starting in 2027, that jumps to quarterly. Miss a deadline and you’re looking at fines that can hit $10,000 per vehicle per day.
We bring CARB-certified testing directly to your location in San Fernando. You schedule a time that works for your operation, we run the OBD emissions test on-site, and we submit the results electronically to CARB the same day. No driving to a testing station. No waiting in line. No wondering if your paperwork made it through.
Your trucks stay on the road. Your registration stays current. You get documentation proving compliance without disrupting your schedule.
We operate right here in San Fernando, serving the trucking companies, owner-operators, and fleet managers who keep goods moving through the Valley and beyond. We’re not a corporate chain. We’re a local shop that understands what it takes to run a trucking operation in California.
Our testers are CARB credentialed, which means we’ve completed the state’s required training, passed the exam, and maintain biennial certification. We use approved OBD testing devices that connect directly to CARB’s system, so your results get transmitted immediately—no paper forms, no mail delays, no lost records.
San Fernando sits at the heart of major freight corridors connecting to LA’s ports and distribution centers. We know the pressure you’re under to stay compliant while keeping your trucks moving. That’s why we built our service around your schedule, not ours.
First, you reach out and tell us how many trucks you need tested and where they’re located. We’ll confirm your vehicles qualify—remember, this service only applies to 2013 or newer model years with a GVWR over 14,000 pounds.
We schedule a time that minimizes disruption to your operation. Most fleet managers prefer early morning or end-of-day appointments, but we work around your dispatch schedule.
When we arrive, we connect our CARB-approved OBD device to each truck’s diagnostic port. The test takes about 15 minutes per vehicle. We’re checking emissions data that’s already stored in your truck’s computer system—no dynamometer, no tailpipe probe, just a direct read of the onboard diagnostics.
If your truck passes, we submit the results electronically to CARB right there on-site. You’ll receive documentation showing the test date, results, and submission confirmation. That passing test is good for up to 90 days before your compliance deadline, so you can test early and avoid last-minute scrambling.
If a vehicle doesn’t pass, we’ll explain what the system flagged and what your next steps are. Sometimes it’s a simple fix. Sometimes it requires a mechanic. Either way, you’ll know exactly where you stand.
Ready to get started?
California’s Heavy-Duty Inspection and Maintenance program kicked in October 2024. If you operate heavy-duty trucks in this state, you’re already in the system—or you need to be.
Here’s what CARB requires: You must test your 2013 or newer heavy-duty vehicles twice per year. Those tests need to happen within specific windows tied to your compliance deadline, which CARB assigns based on your vehicle’s VIN. You can submit a passing test up to 90 days early, but not later than your deadline. Miss it, and DMV won’t renew your registration.
Starting October 2027, testing frequency increases to quarterly—four times per year instead of two. That’s a significant jump in administrative load, especially if you’re managing a fleet.
San Fernando’s trucking operations face the same challenges as the rest of Southern California: tight delivery schedules, high operating costs, and constant regulatory pressure. Heavy-duty vehicles make up just 3% of California’s vehicles but contribute over half of smog-forming pollution. That’s why CARB enforcement is strict and penalties are steep.
Our service handles the testing piece so you can focus on running your business. We’re priced competitively—some testing providers charge up to $75 per vehicle. We keep costs reasonable because we know compliance is already expensive enough.
Your truck qualifies if it meets two specific criteria: model year 2013 or newer, and a gross vehicle weight rating over 14,000 pounds. This includes diesel, hybrid, and alternative-fuel heavy-duty vehicles.
If your truck is older than 2013, it doesn’t fall under the Clean Truck Check program—it may require traditional smog testing depending on weight and fuel type. If your truck is under 14,000 pounds GVWR, even if it’s newer than 2013, it’s not subject to this program either.
The easiest way to confirm is to check your vehicle registration or door placard for the model year and GVWR. If you’re still unsure, give us the VIN and we can tell you immediately whether your vehicle needs Clean Truck Check testing or falls under different requirements.
Right now, you need to test twice per year—every six months based on the compliance deadline CARB assigns to your vehicle. That deadline is tied to your VIN and doesn’t change, so once you know it, you can plan your testing schedule around it.
In October 2027, the requirement increases to quarterly testing. That means four times per year instead of two. It’s a significant change, especially for fleet operators managing multiple vehicles with different compliance deadlines.
You can submit a passing test up to 90 days before your deadline, which gives you some flexibility to test early and avoid last-minute issues. But you can’t test late—if you miss your deadline, your registration gets held and your truck can’t legally operate until you’re back in compliance.
If your truck fails, the OBD system has flagged an emissions-related issue that needs to be addressed before you can pass. We’ll give you a detailed report showing exactly what the system detected—usually it’s a specific diagnostic trouble code related to emissions controls.
Your next step is getting the issue diagnosed and repaired by a qualified mechanic. Sometimes it’s something straightforward like a faulty sensor. Other times it indicates a more significant problem with your emissions system. Either way, you need to fix it before you can retest and submit passing results to CARB.
Once repairs are complete, you can schedule another test. There’s no limit on how many times you can retest, but remember your compliance deadline doesn’t move. If you’re getting close and still haven’t passed, that’s when registration holds and penalties start becoming a real risk.
We come to you. That’s the whole point of our mobile service—we bring CARB-certified testing directly to your location in San Fernando so your trucks don’t sit idle and your drivers don’t waste time running to a testing station.
Whether you operate out of a private yard, a shared facility, or even on-street parking, we can work with your setup. The only requirement is safe access to each vehicle so we can connect our testing equipment.
Most fleet operators prefer scheduling all their vehicles at once during a slower operational window—early morning before dispatch or late afternoon after routes are complete. We can test multiple trucks in the same visit, which makes compliance management much simpler when you’re dealing with semi-annual or quarterly testing requirements across your entire fleet.
Our pricing is competitive with the local market, and we’re transparent about costs upfront—no surprise fees or hidden charges. Some testing providers in the area charge up to $75 per vehicle. We keep our rates lower because we know compliance testing is a recurring cost you’re already required to absorb twice per year, soon to be four times per year.
For fleet operators testing multiple vehicles, we offer volume pricing that brings your per-vehicle cost down even further. The more trucks you test in a single visit, the better your rate.
When you’re comparing costs, remember that mobile testing also saves you money in ways that aren’t immediately obvious. Your drivers stay on their routes instead of taking trucks to a testing station. Your dispatch schedule doesn’t get disrupted. And you’re not paying for the fuel and time it takes to drive to a facility, wait in line, and drive back.
We submit all passing test results electronically to CARB the same day we test your vehicle. The system transmits directly from our approved OBD device to CARB’s database, so there’s no paper form that can get lost in the mail or delayed in processing.
You’ll receive documentation immediately after testing that shows your vehicle information, test date, pass/fail status, and confirmation that results were submitted. You can also verify compliance status yourself by logging into CARB’s Truck Regulation Upload Compliance and Reporting System, where all your vehicle records are stored.
If you ever need proof of compliance—whether it’s for DMV registration, an audit, or your own records—you have both our documentation and CARB’s system showing exactly when your truck was tested and what the results were. That’s the advantage of electronic submission: everything is timestamped, traceable, and immediately available.
Local Resources
Useful Links
Other Services we provide in San Fernando
