Mechanical Breakdown Protection Do I Really Need To Purchase Additional "Mechanical Breakdown Protection" On A Pre-Certified Car??

Do I really need to purchase additional "Mechanical Breakdown Protection" on a Pre-Certified Car?? - mechanical breakdown protection

I want to buy a Dodge Certified Pre-leasing has 5yrs/65k (Balance of Plant bumper2bumper) and guarantees 3m/3k. The merchant then asked if I want this additional coverage. I thought that everything is under warranty. Is this really necessary? It costs $ 1650 and is back to 100%, if not used.