Heavy Duty Trucking Logo
MenuMENU
SearchSEARCH

Driving to Get the Most Out of Fuel Efficient Technology

A pursuit of the latest fuel economy technology led Jamie Hagen to a close, two-way relationship with Mack Trucks.

June 25, 2019
Driving to Get the Most Out of Fuel Efficient Technology

A pursuit of the latest fuel economy technology led Jamie Hagen to a close, two-way relationship with Mack Trucks.

Photo: Hellbent Xpress

3 min to read


Jamie Hagen loves technology and using data to wring the most performance out of his equipment. He’s been tracking fuel economy his entire life – first as a financially strapped teenager trying to put as few dollars as possible in the tank of his little four-banger foreign car, to when he bought his truck and went to work on the road at age 21.

“I didn’t know anything other than fuel was my biggest expense, and I wanted to keep up with how much I was spending and burning,” Hagen says. “And I really didn’t know how to do anything with that data, other than I learned the importance of driving slower right off the bat.”

Ad Loading...

Hagen was soon reading up on the latest products aimed at boosting heavy-duty truck fuel economy. “I started hearing about all these really interesting systems,” he says. “Things like aerodynamics, liftable axles, downspeeding and other great ideas. And the idea of using technology to boost my fuel economy performance really became a passion then.”

In pursuit of his new passion, Hagen stumbled into a situation that is the envy of many owner-operators and small fleet owners – an intimate, two-way working relationship with a major truck maker.

“I went to the Mid-America Trucking Show looking for a new truck,” Hagen recalls. “I didn’t have any brand loyalty and was prepared to look at anything and everything. I just wanted the best possible truck for my business.”

At the Mack booth, Hagen talked with engineers about various technologies and systems, which led to a private ride-and-drive in a Pinnacle tractor. “After that, they sent me an email and asked me what I thought,” he says. “And I sent them this long, drawn-out reply basically saying, ‘Here’s what you do well, but here’s I think you could do in addition to those things…’ and the relationship grew from there.”

Soon, Hagen found himself working with both Volvo and Mack engineers, giving direct input on the companies’ automatic liftable axle system then in development. “I could tell they were really trying to embrace this technology and do something new with it,” he says.

Ad Loading...

Today, Hagen is the proud owner of a new Mack Anthem, fitted out with his dream suite of fuel-saving technology and components. But there have been some adjustments. Hagen says having an open mind is critical for success in a truck laden with this much new technology. “This truck is completely different than anything you’re used to, or have driven before,” he says. “It’s nothing like driving an older truck.”

As owner of a small fleet, Hagen also has drivers of his own to coach. He thinks downspeeding is the toughest adjustment for them in terms of new technology. “They often feel like the engine is struggling,” he says. “But you have to understand the engine is performing the way it’s designed to. The bottom line is you have to learn to use the new technology to get the most out of it. You have to be willing to let the cruise control do its job. I get comments all the time about just being a ‘steering wheel holder.’ But I’ve learned how to get the most out of the mDrive [automated manual transmission] in my truck – I can use my foot to shift up or down as needed on grades. But at the same time, I’m completely focused on safety when I’m going down the road. Because the mDrive is doing all the work managing and running the powertrain.”

Hagen has only had his new Anthem for a few months, and didn’t take delivery of the truck until the harsh South Dakota winter was about to set in. “At the moment, I’m sitting on a lifetime mph average of 8.8 for this truck,” he says. “The lifetime number on my last truck was 8 mpg. So that’s pretty good right out of the box. And I haven’t even hit the good hauling season up here yet. I have great numbers ahead of me. I have no doubt.

Subscribe to Our Newsletter

More Fuel Smarts

SponsoredFebruary 1, 2026

Stop Watching Footage, Start Driving Results

6 intelligent dashcam tactics to improve safety and boost ROI

Read More →
Fuel Smartsby Deborah LockridgeJanuary 29, 2026

California: Clean Truck Check Rules Still in Force for Out-of-State Trucks, Despite EPA Disapproval

The Environmental Protection Agency said California can’t enforce its Heavy-Duty Inspection and Maintenance Regulation, known as Clean Truck Check, on vehicles registered outside the state. But California said it will keep enforcing the rule.

Read More →
Illustration of Department of Justice building superimposed by truck exhaust stacks
Fuel SmartsJanuary 27, 2026

Justice Department Pulls Back on Criminal Prosecution of Diesel Emissions Deletes

The Trump administration has announced it will no longer criminally prosecute “diesel delete” cases of truck owners altering emissions systems in violation of EPA regulations. What does that mean for heavy-duty fleets?

Read More →
Ad Loading...
HDT Spotlight video on natural gas truck engines.
Fuel Smartsby Jack RobertsJanuary 26, 2026

Why the Cummins X15N Changed the Conversation About Natural Gas Trucking

Natural gas is quietly building a reputation as a clean, affordable, and reliable alternative fuel for long-haul trucks. And Ian MacDonald with Hexagon Agility says the Cummins X15N is a big reason why.

Read More →
Blue Tesla Semi pulling flatbed trailer inside warehouse or manufacturing facility
Fuel SmartsJanuary 21, 2026

First Tesla Semi for RoadOne IntermodaLogistics

RoadOne IntermodaLogistics has bought a fully electric Tesla Semi heavy-duty truck, the first of up to 10 for its Oakland, California, operations.

Read More →
Mercedes-Benz eActros trucks.
Fuel SmartsJanuary 20, 2026

Mercedes-Benz Initiates Megawatt Charging and Long-Haul EV Truck Trials

Mercedes-Benz has begun a new series of tests in Europe to validate vehicle compatibility with megawatt chargers and assess charging performance, thermal management, and usability on long-haul duty routes.

Read More →
Ad Loading...
Windrose-Greenlane truck charging bundle.
Fuel SmartsJanuary 20, 2026

Windrose Bundles Free EV Truck Charging with Greenlane Infrastructure

Windrose customers will receive unlimited charging for three months on Greenlane’s high-power charging network.

Read More →
SponsoredJanuary 19, 2026

3 New Ways Fleet Software Pays: ROI opportunities for modern fleet managers

Safety, uptime, and insurance costs directly impact profitability. This eBook looks at how fleet software is evolving to deliver real ROI through proactive maintenance, AI-powered video telematics, and real-time driver coaching. Learn how fleets are reducing crashes, defending claims, and using integrated data to make smarter operational decisions.

Read More →
SponsoredJanuary 19, 2026

Basic Tracking vs Next Generation Fleet Technology

Fleet software is getting more sophisticated and effective than ever, tying big data models together to transform maintenance, safety, and the value of your existing tech stack. Fleet technology upgrades are undoubtedly an investment, but updated technology can offer a much higher return. Read how upgrading your fleet technology can increase the return on your investment.

Read More →
Ad Loading...
Fuel Smartsby Deborah LockridgeDecember 22, 2025

From Truck APUs to Intelligent Engines: NACFE Updates Idle Reduction Report

Idle reduction for heavy-duty trucks has come a long way. An updated playbook from the North American Council for Freight Efficiency explains what technologies deliver results today — and what’s coming next.

Read More →