Earlier quoted context omitted.
An easily visible one is air intakes. Many manufacturers have shifted to plastic. Peteo-engineering has advanced a lot, but they will still get brittle and break. Interior wise, you can look at things like fabric durability-- lower deniers can be cheaper, but will wear sooner. Springs/foam in seats are another example, but this will vary across manufacturers, models and trims. This isn't exclusive to financial engine…
OK, I went looking for sources and found this[1]: In the United States, the Environmental Protection Agency assumes the typical car is driven 15,000 miles (24,000 km) per year. According to the New York Times, in the 1960s and 1970s, the typical car reached its end of life around 100,000 miles (160,000 km). Due in part to manufacturing improvements, such as tighter tolerances and better anti-corrosion coatings, in 20…
That'll influence the average reliability minimally, unless you were unlucky enough to buy one of those models.
Personally, why I'd rather get something at 120k mileage w/ 250k+ max examples on the road by that calendar date. You'll know whether they designed a lemon.
Add: undersized Tacoma rear leaf springs, multiple manufacturers' head gaskets, a few early aluminum engines (? from memory)