Fuel cost per hour: the off-road fleet metric that matters

For any engine that works in place or in cycles (haul trucks, excavators, gensets, locomotives, drills), fuel cost per operating hour is the metric that actually manages the fleet: burn rate times fuel price, tracked per unit, trended over time. It converts fuel from a site-wide bill into a per-machine number someone can own, and it is the fastest way to spot the units quietly costing more than their twins.

Build it from data you already have

Engine hours come from the meter or telematics; fuel comes from dispensing records or telematics; price comes from your delivered invoices. Divide fuel by hours per unit. The first pass always finds surprises: identical machines on identical duty with meaningfully different burn, which is a machine question, not an operator question.

When twins diverge, measure combustion

Two same-model engines on the same duty should burn alike. When one runs consistently thirstier, its combustion has usually drifted off the certified target: injectors, air path, or control, none of which needs to throw a fault code. Reading the exhaust against the engine's own EPA-certified target turns "unit 12 seems thirsty" into a priced, verifiable repair decision. That per-hour framing is also how the EBM™ platform expresses identified waste for off-road fleets: fuel per hour against target, priced at your delivered cost.