The cost of the McLaren warranty has gotten to be too expensive. You could pocket the warranty cost and self insure. This in many cases would be to your advantage.
Please note there would be the possibility of a catastrophic event that could cause you to lose in this example, but statistically most owners adopting this model would save money.
The self insurance model is increasingly more cost effective if you are using independent (cheaper) repair labor than the dealer.
In the end each owner must decide where their comfort level is for the potential cost of ownership. I have found that my cost of ownership over a span of six different McLaren MP4-12C's and nearly 5 years has been dramatically lower by self insuring vs the Manufactures expensive annual warranty. But I'm also the mechanic for my cars and I provide the labor for free, and the parts are sourced at the lowest prices possible (i.e. not thru the dealer when possible)
If you have not found it, explore the McLaren P11 DIY THREAD below and you will find dozens of HOW-TO's, REPLACEMENT PARTS at LOWER COST (usually 1/10th the price at the dealer!), DIY SOLUTIONS, REPAIR GUIDES and MORE. If you find something new, please contribute to the thread!
McLAREN DIYs Well as we learn more and more (and as suggested by @carbon Need help ASAP. Battery too low/dead, can't open door or hood!), I figured we could start a Do It Yourself (DIY) thread where people can post their DIY achievements. Hopefully we can compile our collective accomplishments...
www.mclarenlife.com
Of course wishing you the greatest outcome of your ownership experience with the lowest cost possible. Use the DIY info shared coupled with a good independent mechanic and you can be assured of a lower cost of operation as well. Of course anyone can do this!