AG Mileage Extension NOx FAQ — Get Answers to Your Questions and Make It to the Deadline

The CARB Agricultural Vehicle Extension is part of the Truck and Bus Regulation. Under this extension, AG vehicles that operate less than a specific mileage threshold can delay compliance. To qualify, your vehicles must have a GVWR (manufacturer gross vehicle weight rating) of greater than 14,000 pounds and are only used for agricultural operations of farming or and log harvesting for a profit.

For diesel engine trucks and vehicles dating back to 2009 and earlier, you’ll need to retire them December 31st, 2022 and replace them with vehicles that meet the CARB mandates that are 2010 vehicles or newer. Here’s the exception: Under the AG Mileage Extension in NOx Counties, get a PM retrofit before New Year’s Day 2023, and you can continue operating with unlimited mileage and no end date, as long as you maintain your DPFs (diesel particulate filters). Get the retrofit and avoid retiring a perfectly good vehicle.

Operate exclusively in one of the NOx Exempt Counties to run your vehicle under the existing AG Extension, while clocking in less than 10,000 miles per year without exceeding the prior year’s mileage threshold. Then, install a compliant PM filter, and transition into the “NOx with a Filter” status to keep your vehicle in service into 2023 and beyond.

Ensure that your DPF is maintained regularly. CARB regulations require cleaning DPF retrofits about every 1,000 hours of operation, or at least once per year. Have your DPFs cleaned and examined wherever you are parked with our mobile DPF service or experience FSX advanced DPF cleaning at our Fresno facility. We’ll troubleshoot any issues and handle repairs using our extensive catalog of replacement parts.

Schedule maintenance today and ask about our speedy 24-hour turnaround. We’ll also perform engine servicing, repairs, and even oil changes. Just call us at 559-285-8727 to schedule a service.