What does the 'S' button on my Vauxhall Insignia do?

I recently purchased a Vauxhall Insignia and noticed a button with the letter 'S' on it. What is the purpose of this button and how should I use it?

The 'S' button stands for 'Sport' mode and it is designed to improve performance and handling of your vehicle. When pressed, it adjusts the engine and transmission to enhance acceleration and steering. This is especially useful for driving on winding roads or if you want a more dynamic driving experience.

I personally find the 'S' button to be most effective when I am merging onto the highway or passing other vehicles. It gives me a boost of power and helps me merge with ease.

Be cautious when using the 'S' button, as it may decrease fuel efficiency. I recommend using it sparingly if you want to save on gas.