It is not a form of insurance and people must realize that because some get confused.
You need to make a list of problems he / she might have experienced in their previous life.
The dealer may have negotiated a better deal on service and access to discounts coins you can never have private buyer.
Still though, some people say it is better to save their money instead of buying the extended warranty of the car.
Always choose a brand that has an international track record and is good for use anywhere in the world, whatever the weather and road conditions.
Then you must determine which type of warranty you have on your vehicle.