Yes, these issues are all a part of the crap shoot. I've been fortunate that most of my cars have more or less done the "Blues Mobile" thing (disintegrated all at once.) Actually, they have needed a major repair that made them unsaleable but only because fixing them would have still left me with only a $1000 car. I'm willing to take that risk. A car that is theoretically worth, say, $8000 is worth fixing a transmission. A car (like my old '99 Honda) was NOT worth fixing and I gave it away. That Honda cost me $7K and lasted 60,000 miles and 15 years. Only serious thing it ever needed was a replacement radiator. Then the car just totally died. Perfect. Talk about cheap car ownership (Of course, it looked like junk before we were finished with it.) We never washed it and did only required maintenance (oil and brakes, tires.) It was a compromise that we were willing to live with. It was reliable until it wasn't. YMMV