Durability

Durability is the ability of a physical product to remain functional, without requiring excessive maintenance or repair, when faced with the challenges of normal operation over its design lifetime.

[1]: 5  There are several measures of durability in use, including years of life, hours of use, and number of operational cycles.

Product durability is predicated by good repairability and regenerability in conjunction with maintenance.

[3] Every durable product must be capable of adapting to technical, technological and design developments.

[6] Durability can encompass several specific physical properties of designed products, including:

The Manx Electric Railway on the Isle of Man still operates with its original tramcars and trailers, all of which are over one hundred years old, the latest dating from 1906.