Do I need to use premium fuel for my Ford Fiesta ST?

I've recently purchased a Ford Fiesta ST and I'm wondering if it's necessary to use premium fuel for optimal performance. Is it worth the extra cost, or can I stick with regular unleaded fuel?

Yes, it is recommended to use premium fuel for the Ford Fiesta ST to ensure maximum power and fuel efficiency.

No, you can stick with regular unleaded fuel without sacrificing performance. However, using premium fuel may provide a slight boost in power.

I've found that using premium fuel has improved the overall driving experience in my Ford Fiesta ST. It's worth the extra cost for me.