Commercial trucks and vans are changing quickly. The vocational equipment that fleets install on their vehicles must change, too. Fleet managers must look past traditional steel bodies and permanently bolted equipment. Upfitting trends for 2026 focus on maximizing efficiency for both diesel and electric vehicles. Upfitting now relies on two key principles: making things lighter and making them easier to reconfigure.

The New Rule of Weight

Weight is now the most important factor in vehicle efficiency. Lighter vehicles save money, regardless of what powers them. Vehicles with gasoline or diesel engines, reducing weight immediately cuts fuel consumption. Regarding electric vehicles (EVs), keeping the truck lightweight is essential for extending its driving range.

For this reason, many service and utility bodies are moving away from traditional steel. Instead, upfitters use more aluminum and composite materials. In fact, the U.S. Department of Energy confirms that reducing a vehicle’s weight by 10% can result in a significant fuel economy improvement. You can learn more about these advanced materials here: Lightweight Materials for Cars and Trucks. Consequently, choosing lighter materials helps your fleet maintain maximum payload capacity, which is vital for any construction or field service business.

Why Modularity is Better Business

In the past, truck bodies were built for a single, specific job. Today, flexibility saves money and reduces downtime. Modular upfitting allows fleets to quickly change how a truck is used.

For example, a simple pickup chassis cab can switch from hauling a flatbed to carrying a dump insert in a short amount of time. Therefore, small fleets can achieve more with fewer vehicles. Moreover, modular systems within van interiors allow crews to swap out organized shelving units. Then, the van can be quickly reconfigured for a different crew or a new contract. As a result, fleet managers get more value from each vehicle asset over its entire life.

Powering Tools the Electric Way

The power needs on a job site are changing with the rise of electric work trucks. Traditionally, auxiliary equipment like compressors and liftgates relied on the vehicle’s engine using a Power Take-Off (PTO). Electric trucks require an entirely new approach to auxiliary power.

Because of this, upfitters are now experts at Vehicle-to-Load (V2L) systems. These systems use the truck’s large battery pack to power tools and equipment. Furthermore, new electric Auxiliary Power Units (APUs) replace older diesel units. The shift to these electric auxiliary power systems eliminates engine idling, which cuts down on noise and pollution. You can read more about this technology transition here: The All-Electric APU Challenge. Ultimately, careful design ensures the power drawn by your equipment is managed so it does not excessively reduce the truck’s driving range.

Also read: EV Work Trucks: Calculating Your Total Cost of Ownership