There is a concept called maintenance. That is a vehicle is maintained in proper working condition by the expenditure of funds. A properly maintained vehicle can and does have a long life.
Rather than consider “trading” at some predetermined interval there is an alternate course. Consideration can be based on the cost of owning and operating the vehicle based on miles driven.
Generally in a properly maintained vehicle, the cost of owning and operating per mile will decrease over a very long period of time if there is routine maintenance. The tendency however is to allow break down maintenance to prevail. The breakdown is considered reason to find a new or different vehicle.
“There is a concept called maintenance.”
Right, and few perform it. They just drive until something breaks and trade their cars too early. I’m convinced most people waste more of their money buying cars than anything else. They make sure they have car payments permanently.