130 engine, under warranty, needs new engine

Hi, I'm wondering if I have any recourse as my 4yr old 130 needs an engine replacement? It's got only a few months warranty remaining,

I've asked the following of the car dealership manager, from where I purchased the car and also from where it is serviced.
1. Why does it need a new engine when it is only 4 years old? ..... Because there is a problem with the pistons
2. How often do you have to replace engines under warranty? .... Monthly. Not all are Hyundai
3. Why does Hyundai give warranties for cars? ..... I don't know
4. Aren't warranties given because that is the timeframe when things are likely to go wrong with new engines? ...
5. If you're having to replace my car engine whilst under warranty, shouldn't it be given the same warranty coverage? ...
6. I purchased the car because of the security of a reliable car. What else is going to go wrong with the car as I've had to have a seat belt replaced, shock absorbers replaced and was told that my front lights were out of alignment and it would not be covered under warranty, as I must have taken the front of the car off and moved the screws as one is missing? I only know how to put petrol in my car! The dealership kindly reduced the cost from $500 to $200 for me. Still money I should have been up for, as the screw could simply have been loose when purchased initially!

I have been told that Hyundai will cover car parts for 12 months. I'm concerned that once out of warranty, so many other things will go wrong at my expense. I really need a considered opinion from someone in the forum world!

Hmm Hyundai!