Related: Quick Spin - Peterbilt Model 567
Paccar Shows Off Modern, Green, and Clean MX Engine Plant
Paccar’s MX engine plant in Columbus, Mississippi is among the most modern, and environmentally friendly on the planet.

Lance Walters, plant manger of the Paccar Engine Company’s Columbus Engine Plant in Columbus, Mississippi, briefs journalists on production techniques during a tour of the facility.
Photo: Jack Roberts
In a former cotton field not far from the Mississippi-Alabama state line, sits one of the most modern diesel engine manufacturing plants on the planet. The unlikely setting is home to Paccar Engine Company’s Columbus Engine Plant. The 450,00 square foot facility, which sits mid-way between Columbus and Starkville, Mississippi, produces all the Paccar MX11 and MX13 engines for North America today. From the plant, engines are shipped to the company’s Peterbilt and Kenworth truck plants in Denton, Texas, and Chillicothe, Ohio. There are also occasional shipments to the Mexicali, Mexico, plant and to the Kenworth Truck Plant in Renton, Washington, as production demands dictate.
Lance Walters, plant manager of the Columbus facility, said the plant employs about 600 workers who man three shifts that produce about 150 engines daily. “All told, this plant has produced more than 175,000 engines since production kicked off in 2010,” he said. “And despite the spike in Class 8 demand today, thanks to our modern and lean manufacturing processes, we are keeping up with demand easily, with about a week’s lag time from the time an order is placed to when production of the engine begins.”
Currently, Walters said, around 10% to 20% of the plant’s daily production are MX11 engines, with the bulk being MX13 engines. “We expect those ratios to even out some as our customers become more familiar with the Paccar 11-liter engine and its capabilities,” he noted.
Walters said both the Paccar facility and the land it is situated on were designed with expansion in mind, noting that the plant interior itself can accommodate additional production lines if needed. “We are only using about 50 acres of this 400-acre site,” he added. “So, we have the space here to expand substantially."
Walters said he is extremely proud of the plant’s well-deserved reputation as a globally recognized green manufacturing facility, which has Zero Waste-to-Landfill processes in place to help both the environment and Paccar’s bottom line. “The plant interior is extremely well-lit,” he said, “thanks to modern LED lights. But those lights also have motion detectors, which automatically dim them if activity in a certain area falls off to save power.”
Another innovative practice at the Columbus plant is the proactive recycling effort that every day sends around 40,000 pounds of waste metal chips and shavings from the manufacturing process out to recycling centers in Alabama and elsewhere in the U.S. “That process alone adds about $1 million a year to our operating costs,” Walters noted.
More Fuel Smarts

New Agentic Predictive Maintenance Report Demonstrates How Degraded Aftertreatment Systems Waste Fuel
Questar analyzed a large mixed-class fleet and discovered it was wasting as much as $30 in fuel per vehicle, per day, because of mechanically degraded aftertreatment systems.
Read More →
New York City's Microhub Project is Delivering Results
Trucking, last-mile delivery companies, and environmental advocates like what they are seeing so far with New York's microhub program.
Read More →
Lessons Learned About Alternative Fuels: Start Small, Stay Flexible
Practical advice on adopting alternative fuels and ZEVs from HDT's 2026 Top Green Fleets, from renewable diesel and natural gas to electric trucks.
Read More →
Kempower Adds Flex EV Charger to Help Support Transition to Megawatt Charging
The Kempower Mega Satellite Flex has both a CCS and MCS connector, allowing operators to serve both types of heavy-duty vehicles.
Read More →
Hino Adds Electric Class 6/7 Truck
Hino says the Le Series is an important step in the company's efforts to reduce environmental impact and support its customers’ sustainability goals.
Read More →
Can Multi-Speed EV Transmissions Solve Heavy Trucking’s Biggest Electric-Vehicle Problems?
A startup called Sigma Powertrain believes purpose-built multi-speed gearboxes can boost efficiency, reduce battery size and improve gradeability for heavy-duty battery-electric trucks.
Read More →
Hendrickson Debuts Electraax E-Axle for Medium-Duty Trucks
Developed with Driventic, Hendrickson's new integrated e-axle is designed to improve efficiency, reduce weight, and extend range in Class 6-7 EV applications.
Read More →
50 Ways Fleets Can Cut Fuel Costs Now — Without Buying New Trucks
Fuel savings don’t come from one big change. They come from dozens of small ones. Here’s how leading fleets are stacking gains across drivers, routing, maintenance, and more.
Read More →
Top Green Fleets 2026: How Fleets Are Reducing Emissions in the Real World
What works in sustainable trucking today? Heavy Duty Trucking's Top Green Fleets are finding practical ways to cut fuel use, reduce emissions, and keep freight moving.
Read More →
California Launching $1 Billion Electric Truck Rebate Program
CARB says the California Clean Fuel Reward program will begin offering point-of-sale rebates of up to $120,000 for electric commercial trucks starting June 26.
Read More →
