Why Eco Mode Can Help Cut Your Gas Costs

This widely used setting can be a smart way to save on fuel.

• Eco mode improves fuel economy by changing transmission behavior and accelerator response.
• It works well for most everyday driving, but it is not ideal when you need full power, such as for towing.
• Drivers can also boost mileage by driving steadily and keeping tires properly inflated.

Eco mode is a common vehicle setting designed to adjust a car's main mechanical systems so it can run more efficiently. The big question is how much difference it actually makes.

As someone who tests cars for a living, I often use eco mode to try to conserve fuel and spend less at the pump.

Here is what I found about the setting and what drivers should understand about its real-world effects.

How eco mode functions

Eco mode changes transmission behavior so the vehicle shifts into higher gears sooner, which keeps the engine at lower revolutions per minute (RPM) and helps reduce fuel use. It also softens accelerator sensitivity so the car accelerates more gradually instead of using sharp, fuel-wasting bursts of speed.

These changes may sound minor, but according to Kelley Blue Book, manufacturers claim eco mode can save up to 12% in some vehicles under controlled conditions. In everyday driving, the savings are usually more modest, but the feature can still help drivers stretch their gas budget.

When eco mode makes sense

I would recommend using eco mode for most routine driving because it encourages smoother habits and can help reduce fuel costs.

Pairing eco mode with fuel-conscious driving and gas-saving apps can lead to noticeable monthly savings. Apps such as GasBuddy, Gas Guru and Upside can help drivers locate cheaper fuel or earn cash back and discounts on gas purchases.

I would not suggest using eco mode when a vehicle needs maximum power, such as while towing or climbing steep hills. For my own daily driving on local roads and in traffic, though, it fits well.

Other ways to improve fuel economy

If you want to spend less on gas, there are several driving habits and maintenance steps that can help improve efficiency.

Keeping a steady speed and avoiding hard, sudden acceleration can reduce the amount of fuel an internal combustion engine uses.

You can also improve mileage by removing unnecessary weight from the cargo area, keeping tires properly inflated and managing climate control settings carefully to avoid extra fuel use.

Using eco mode alongside these tips and apps can lower your overall fuel costs. If high gas prices are becoming a burden, a hybrid vehicle may also be worth considering.