I took out the 3 year, plus an extra 2 year warranty cover on purchase, and will change at 5 years if not before depending on the deal, and also the hope that the next Jazz Mk 5 is a hybrid. If not I would buy another one of the current model, which although my wife’s , I love driving.
I think irrespective of 5 year warranty you should be good, with yours for another 2 years. You would have to be extremely unlucky to cop for a big bill, other than servicing. I also took out the 5 year service plan so again am good until it runs out. Good luck with whatever you decide.