eli5: Why do cars have limited miles?

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If you have a car and you continue to fix it every time a problem occurs, why can’t you keep the car and drive it forever as-long as you have to money to fix it if something goes wrong?

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Anonymous 0 Comments

In theory if you had enough money and the desire to, you could just fix and replace parts as they wear out. As long as you know how to make those parts or have enough time and resources to pay someone to make those parts, it is possible to keep a car running nearly indefinitely.

In the real world, though, there are probably things that prevent this. It becomes VERY expensive and inconvenient. Making one-off parts takes a long time so the owner must be prepared to hold lots of spares or wait a long time with an unusable vehicle while things are repaired.

Modern high volume production makes newer cars very much greater in value for money in terms of technology, reliability and comfort as well as functionality (not to mention safety). Few people would pay lots of money to keep a car running that is inconvenient, unreliable, uncomfortable and difficult to use.

Finally there are laws and regulations – the modern ones on safety and emissions might make it hard to register a vehicle for use on public roads. In which case, the vehicle might be drivable but just not legally on public roads – limiting its usefulness.

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