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Today’s cars, trucks, and SUVs are packed with technology that was the stuff of science fiction 20 years ago. Features like rain-sensing windshield wipers, automatic emergency braking, and adaptive cruise control are just about expected in this year’s newest cars. However, there’s one feature that many motorists might not think twice about: eco mode. So, what is eco mode in a car, and does it really make a difference in fuel economy?

Eco mode can make adjustments in your car to prioritize fuel economy to save you money while causing fewer harmful tailpipe emissions

Eco mode. Chances are that your late model, gas-powered car has a dial, toggle, or switch that can activate something of an “eco mode.” For most vehicles, it means dialing down the engine’s throttle response and earlier shifts in an automatic or continuously variable transmission (CVT).

As a result, your vehicle’s engine works less and burns less fuel. In some cases, like that of a seventh-generation Chevrolet Corvette, a car will use a cylinder shutdown facility to act as something of an eco mode. With the Corvette, the Kentucky performance car will shut down half of its eight cylinders to save fuel. Clever, clever. 

A driver selects eco mode to optimize fuel economy in their car.
A driver selects an eco mode button | 12963734 via iStock

Of course, the driving setting doesn’t influence your behavior. As such, if you continue to employ fuel-consuming driving habits like stabbing the throttle or braking too hard, you won’t see much of an improvement in your fuel economy. Conversely, if you start practicing fuel-saving driving techniques, you could be pleasantly surprised.

For instance, the way you apply pressure to your accelerator has a stark impact on your fuel economy. If you slowly and gradually apply throttle, you’ll use less fuel than if you drive with a 15-pound right foot. Tools like eco mode simply help the car to optimize efficiency to match your eco-friendly driving habits. However, driving aggressively when in any setting will yield few, if any, fuel-saving benefits.

Interestingly enough, even the music you listen to can have an impact on your fuel economy. If you listen to fast-tempo, exciting music, you could be driving more aggressively without being cognizant of it. On the other hand, slower, more relaxing musical accompaniments could chill you out behind the wheel.

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Staff Writer

Erik Sherman

Erik Sherman joined the MotorBiscuit team as an Autos Writer in 2022. An admitted petrolhead and an avid motorcyclist, Erik has owned everything from classic cars to motorcycles to modern driver’s cars. Erik also has extensive experience with military and emergency vehicles, ranging from ambulances and fire engines to MRAPs and M-ATVs. Erik is an eager car and motorcycle reviewer with experience covering everything from sports cars to pontoon boats and jet skis.

Erik holds a Bachelor’s Degree in International Relations (IRG) from the University of Texas at Austin and has studied Chinese, Energy, and European Politics at the University of Glasgow in Scotland. Erik’s background is unorthodox; he is a United States Marine Corps (USMC) combat veteran, water survival practitioner, and a former firefighter/EMT. Additionally, Erik is a regular volunteer and former instructor with the American Red Cross (ARC).