What does the 'Eco' mode do in the Vauxhall Crossland?

I noticed a button with the label 'Eco' next to my gear shifter in my Vauxhall Crossland. What does it exactly do to improve fuel economy?

Activating the 'Eco' mode optimizes your engine, transmission, and air conditioning to help you save fuel. It also adjusts the throttle and other systems to reduce energy consumption.

The 'Eco' mode helps you drive more efficiently by adjusting the engine's performance and other systems. It also displays useful information in the instrument cluster to help you monitor your fuel consumption.

Turning on the 'Eco' mode can save you money on fuel in the long run. It reduces your vehicle's power output, but it doesn't affect the air conditioning, so you can still stay comfortable.