15 years old with 200,000 miles? Honestly, they aren't designed to provide any more than that. Even if you get this problem fixed, you have to assume another one will pop up almost immediately, right?
I get real attached to my cars, too, and always hate the idea of shopping for and switching to a different one. But every time I do, I am amazed at how much more I like the new one.
Unlike almost every other type of object being produced in the world, for the most part cars are getting better and better. There have been so many excellent safety features added to cars in the last few years - as well as some fun conveniences. That hill-assist feature sounds fabulous! The front collision avoidance system on my 3-year-old vehicle has twice worked in circumstances when the car in front of me stopped suddenly and unexpectedly on the freeway - in one of those cases I probably could not have avoided an accident that likely would have been pretty bad. Also, the blind-spot protection, etc. really makes it much easier to navigate in heavy traffic. With all of the distracted drivers on the road these days, you owe it to yourself and everyone who cares about you to get yourself into a vehicle that is safe and dependable - PLEASE!!
Here's a link to the current crop of station wagons - most of the models have been around for a while, meaning new-ish ones (as opposed to new) ought to be available. https://cars.usnews.com/cars-t.....ngs/wagons
Going to climb down from my soapbox now.....