I did, since it's an ST200 and 5 years of warranty will give me a better price IF I decide to sell the car. I don't think I will ever want to, I'd like to keep it as a collecters item. But there might be a time that I would have to sell it, since kids and a house are a probability in the near future. I'm still young and don't have huge financial reserves, so if me and my SO decide to get kids somewhere in the near future I might have to part with it.
It didn't cost much as well
600 euro's for three extra years is kinda awesome, considering the cost saving on certain materials on the Fiesta ST.