Most engines these days are good for 1/4 million miles easily, if they're regularly serviced; it's just that the rest of the car they're attached to falls to bits..
In my experience there are two "death mileages" for cars. The first is around 80k, where your OE exhaust, clutch, dampers etc. start to wear out. These are quite big-ticket items, so the car ends up being dumped onto its young, keen and/or naive next owner to sort out.
The next death mileage is in the 120k region where the things fixed/replaced when the car was more valuable start to come up for the second time round, so those cheap eBay wishbones, brakes and pads etc. pack up and the cost/hassle annoys the owner who bought the 80k car and then spent a fortune fixing it. You might also have some corrosion issues, electrical faults, and some straggler components, that didn't go wrong yet despite being fitted in the factory some 10 years earlier. The car gets sold on again, or it gets the cheapest bits the grudging owner can find.
If the car makes it to 130k, it means someone's been fixing it, that most of the components are quite new and they're probably mostly good quality.. so the car is good for the next 50k miles. Nothing goes wrong between 130k and 180k unless you're tempted to see how cheaply you can run it and scrimp on a water pump in between cam-belt changes, etc.
Then 180k..


is a place that not many cars get to, and very few come back from... but it's a place where you're grateful that the car just still works, so it's worth maintaining... but you understand that filling the tank with gas doubles its value temporarily and even a paint chip claim on the insurance will make it a write-off... so worry about that later..
Ralf S.