By Short answer:
Sometimes. Not always.
Eco mode is designed to improve fuel efficiency, which can lower how much you spend at the pump, but the savings depend heavily on how and what you’re driving.
When Eco Mode Does Save You Money
Eco is most effective when:
- You’re driving unloaded
- You’re commuting or highway cruising
- You maintain steady speeds
- You avoid hard acceleration
In these cases, eco mode smooths throttle input and keeps RPMs lower, which can improve fuel economy by roughly 5–10% depending on the truck and driving style. Over weeks or months, that can absolutely add up.
When Eco Mode Doesn’t Save You Money
Eco usually won’t help and can sometimes hurt when:
- You’re towing a trailer
- You’re hauling heavy loads
- You’re driving in hilly terrain
- The truck is constantly downshifting
When towing, eco may cause the truck to hunt for gears or feel underpowered. That can actually burn more fueland increase wear compared to using Tow Haul mode, which is designed for load control.
Real-World Testing Backs This Up
Independent testing from The Fast Lane Truck shows that eco mode works best during light-duty driving, not heavy towing. Their real-world tests confirm what many truck owners experience day to day.
Towlos was proud to sponsor their video breaking this down so drivers can make smarter decisions, not just hopeful ones.
Eco Mode vs Tow Haul: The Money Question
If saving money is the goal:
- Eco: Better fuel economy during daily driving
- Tow Haul Mode: Better control and drivetrain protection when towing
Trying to use eco mode while towing often costs more in the long run due to inefficient shifting and extra strain on the truck.
Bottom Line
Eco mode can save you money at the pump, but only when the truck isn’t working hard.
If you’re towing, hauling, or driving in tough conditions, the smartest move (and often the cheaper one long-term) is using the drive mode built for the job.
At towlos, we believe saving money starts with using the right setup, from drive modes to the right trailer, so you can move what matters most with confidence.
