In BC last week, I was picked up by a Prius that had
180k miles on it. There was no barrier between driver and passenger, and I rode in the right front seat.
It felt a new Prius, with no squeak or rattle after 180k miles on BC streets. The driver told me that the car had never undergone servicing other than scheduled maintenance and repair of a dented fender. I asked him how long the car would remain in service, and he said something like "until it is uneconomical" - and laughed, adding "maybe a long time".