Yes, that is a good grasp of extended warranties.
And getting a $2000 repair bill stacked on top of a $2500 repair bill within 12 months of each other is more than most want to shoulder.
What items will be authorized is clear with MaxCare. The significant items of the Engine, Electronics, and Suspension are covered, and I've had zero issues with authorization.
I will always use OEM parts.
But Doc, this is what works for me, owning a high-tech, airbagged, twin-turbo pickup. For others, the numbers may not crunch.