Mack Trucks continues to see a healthy future for diesel engines, even as alternatives like electrification begin to emerge.
Mack: Path to Electrification is Not Straight to Linehaul
Mack Trucks continues to see a healthy future for diesel engines, even as alternatives like electrification begin to emerge.

“Diesel today, it’s performing extremely well. It’s cleaner than it’s ever been, it’s robust, it’s versatile,” said Roy Horton, director – product strategy, during a briefing in Oakland, California. As for talk about electric trucks? “It’s almost a little bit of an uphill battle there.”
Electrification is “on the bubble, and it’s something everyone is looking at,” he said, admitting that the recent unveiling of Elon Musk's Tesla Semi attracted attention. “It’s definitely going to be part of our future.” Just not for longhaul. Not right away.
Mack believes the earliest adopters of electrification will be operations with the chance to charge at a home base and not depend on general infrastructure for fuel. That includes refuse, local delivery, and public transportation fleets.
Next would be applications with fixed routes where infrastructure is established but longer ranges are less of a concern. That opens opportunities for local distribution, regional haulers, and select vocational segments.
Longhaulers would be the last to use the trucks, drawing on power from secured infrastructure.
For its part, Mack has already been working with electrification in its own right. It unveiled a range-extended LR refuse truck in 2016, and a diesel-electric hybrid drayage truck. With Siemens it is also experimenting with the idea of electric highways, with vehicles drawing on the power of wires strung along the routes. The company is producing electric buses, too.
Mack will focus on electrification where it’s “commercially viable”, stressed Jonathan Randall, Mack’s senior vice president – North American sales. As for new players such as Nikola Motors and Tesla? “Competition is good.”
Mack’s work with alternative power sources hardly ends there. It already has experience with biodiesel, ethanol, hydrogen, natural gas, propane, and Dimethyl Ether (DME).
“We have, and continue to investigate, all of the viable alternatives,” Horton said.
“Mack is well-positioned, no matter which way the market goes.”
John G. Smith is the editor of the award-winning Canadian publication Today's Trucking. This article was used under a cooperative editorial sharing agreement between HDT and its Canadian counterpart.
More Fuel Smarts

NACFE: Fleets Need to Recalibrate TCO Strategies as Electric Trucks Gain a Long-Term Edge
NACFE’s Run on Less data has found that recent setbacks aside, electric truck powertrains are trending toward market leadership by 2025.
Read More →
New High-Horsepower Natural Gas Engine Could Expand Fleet Options
Westport and Volvo are demonstrating a 500-hp truck with diesel-like efficiency — one that also offers what Westport says is a better pathway to using hydrogen fuel in trucks.
Read More →
Why Fuel Diversification Matters for Trucking Fleets
Relying on diesel alone exposes fleets to fuel price volatility. Here’s why diversification with electric, natural gas, and renewable fuels can reduce risk.
Read More →
Range Energy Confirms eTrailer Performance in Winter Testing as Commercial Rollout Nears
Range Energy said its production-ready eTrailer system proved it can boost stability, safety, and efficiency in sub-zero winter conditions as the company moves toward scaled deployment.
Read More →
Top Green Fleets of 2026: Nomination Deadline Extended
Is your company a leader in sustainability efforts among trucking fleets? If so, Heavy Duty Trucking's editors want to hear from you.
Read More →New Lightweight Wheel Cover Targets Simpler Aero Gains [Watch]
Watch to learn how Deflecktor's new wheel cover design is taking a simpler approach to aerodynamics, with an eye toward making it more practical for both trucks and trailers.
Read More →
Deflecktor: Hubbub Aerodynamic Wheel Cover Cost-Effective Even for Trailers
Aerodynamic wheel covers can deliver small but meaningful fuel-economy gains for fleets, and Deflecktor says its latest design aims to make the technology easier and more affordable to deploy.
Read More →Cutting Fleet Fuel Costs in a Volatile Market [Listen]
When diesel prices are as volatile as they've been in 2026, it makes it tough for trucking fleets to plan and control costs. Breakthrough Fuel's Jenny Vander Zanden has insights on near-term savings strategies.
Read More →Diesel Price Swings Aren’t Over. What Can Your Fleet Do?
Practical steps fleets can take to manage fuel costs, from purchasing strategies to driver behavior.
Read More →
Diesel Prices Surge Toward Record Highs as Oil Price Volatility Intensifies
Prices jumped another 24 cents in a week, with California topping $7.50 and new data showing fleet fuel costs may already be at record levels.
Read More →
