What does the 'Active ECO System' do in the Kia Rio?

I just purchased a Kia Rio and I noticed there is a button for 'Active ECO System'. What does this feature do and when should it be used?

The 'Active ECO System' in the Kia Rio is designed to improve fuel efficiency by adjusting the engine and transmission control. It should be used when driving on long stretches of highway or during city driving with frequent stop-and-go traffic.

I always keep my 'Active ECO System' turned on in my Kia Rio. It not only helps with fuel efficiency, but also provides a smoother driving experience.

I recommend using the 'Active ECO System' when driving in eco-friendly mode. It can also help reduce emissions and pollution.