Reducing Fleet Fuel Costs with Speed Optimization
Fuel is one of the largest ongoing expenses for any fleet-based business, and even a minor inefficiency can snowball into a significant financial burden. One fleet operator, managing 12 International ProStar day cabs, was facing elevated fuel costs despite already optimizing routes and following a maintenance schedule. That’s when they turned to KTS Diesel for a more strategic, data-driven solution.
business challenge
The client’s fleet operated six days a week, hauling 53-foot trailers on mixed highway and urban routes. Fuel expenses remained stubbornly high despite operating modern trucks and investing in GPS routing. With margins tightening, they needed a way to cut costs without compromising delivery timelines or driver performance.
Their key questions:
How can we reduce fuel consumption without disrupting our operations?
Can we create measurable savings that justify any change in fleet policy?
solution
KTS Diesel conducted a comprehensive analysis of the fleet’s telematics and fuel consumption data. One key factor stood out: cruising speeds averaged 72 mph. While common, this speed pushed trucks beyond their peak fuel efficiency range. We recommended a controlled speed reduction, limiting the top speed to 67 mph across the fleet. This small shift would reduce aerodynamic drag and align engine RPMs with optimal fuel burn zones, especially on long-haul trips. The change was implemented via engine control modules (ECMs) and communicated clearly to drivers through training and performance tracking.
The results were immediate and multifaceted:
Lower Fuel Costs: The change translated to a measurable drop in daily fuel use, saving tens of thousands per month.
Extended Equipment Life: Operating at lower speeds eased stress on engines, transmissions, and tires.
Enhanced Safety: A reduced top speed contributed to safer driving behavior, fewer harsh braking events, and better control in inclement weather.
Drivers initially resisted the adjustment but ultimately appreciated the smoother ride and reduced fatigue.
Over the first year, the fleet saved more than $200,000 in fuel costs alone. These savings required no new equipment, no extra labor, and no operational compromise, just a smarter use of existing assets. This success story demonstrates how small, strategic changes, informed by data and implemented with support, can create substantial financial and operational advantages.
Bonus Tip: The client now complements this strategy with regular PM Service from KTS Diesel, further boosting fuel efficiency and uptime.