There’s a 650S that’s been sitting in my mechanic’s bay for the past month, gorgeous and immobile. A part of the cam failed, threw off the timing and damaged one of the pistons. The shop didn’t want to touch it, and sent him to the McLaren dealership who immediately quoted him a minimum $40,000 bill before even taking the engine apart (so likely higher cost in the end). He couldn’t swallow that, so went back to my mechanic and begged him to give it a shot.
They had to custom fabricate a couple parts, and will have him back on the road for around $25,000. Warranty had just expired, and the owner didn’t want to spend another $8000 to extend it (and allegedly the only way McLaren offers the warranty is if ALL maintenance work including thousand dollar oil changes are done at the dealership).
They have a great reputation as drivers cars, but not many can justify the ownership costs along with the irrational depreciation.