Hi,
Maybe nMP is a different, but I have 3 MBP 15" purchased at an interval 2-3 years (from the beginning of the production alu version).
The best decision is to buy Apple Care.
Eg. I have problems after 2 years with battery, motherboard (GPU), trackpad, magsafe... With all models GPU died (replace the motherboard costs a lot) and I thank God I have Apple Care 😉
This is a first version of this "trash can", so I think it is recommended.