Diesel fleet fueling sits at the center of commercial trucking, construction, and heavy equipment operations, and it has specific requirements that light-duty gasoline fleets do not share. Diesel prices fluctuate differently than gasoline. Truck stops and commercial fueling locations operate on different networks than retail gas stations. Volume is higher per vehicle. Fleet fuel cards designed for diesel operations need to address all of these factors.
The heavy fleet segment represents the largest volume of fuel card transactions in the United States. Programs like WEX, Comdata, and Earnify have strong truck stop network coverage through partnerships with TA, Petro, and Pilot Flying J. Branded cards from Marathon, Valero, and Speedway offer diesel discounts at their affiliated networks.
Choosing the Right Diesel Program
For fleet operators running primarily diesel vehicles, the most important evaluation criteria are usually network coverage on regular routes, per-gallon diesel discount rates, and whether the program integrates with telematics for the kind of consumption monitoring that keeps heavy-duty diesel costs under control.
Diesel Fleet Fueling Resources
The Fleet Fuel Cards wiki at wiki.fleet-fuel-cards.com/wiki covers diesel fleet fueling specifically, including how different programs handle diesel purchasing, what truck stop coverage looks like across major networks, and how high-volume diesel operations should evaluate discount structures.