Extended Warranty Worth it?

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How will you know that your car will be trouble-free for the next 4 year/50,000 miles?

Cabin heater (for human, not battery pack): $4,500
Cabin Air Conditioner: $4,000
17" Dislplay screen MCU: $4,000
Onboard Charger: $2,800 (but if you know how to do it yourself, it may cost about $20 for the fuse)
Noisy Instrument Cluster Fan: $1,000
Door Handle (each): $895
Charge Port: $600

Even if 2 of the biggest cost options need paying for it is WAY cheaper to repair than upgrade and lose even more money through rapid depreciation!

I paid £58k for a P85 with all added spec 1 year ago.
Now worth £32k to trade in against CPO
To get say a 1 year old P90D I would have to find say £40k and then lose £20K AFTER A YEAR WHICH ADDS UP TO A £45K LOSS ON 2 CARS IN 2 YEARS!! WAY WAY cheaper to repair even at ridiculous Tesla prices...do the maths!