With the rationalization of the locomotive fleet in the late 1980s, three of the NZR built DSCs were withdrawn in 1989. Between 1989 and 1990, two units were laid up after being damaged due to accidents. Between 1998 and 2013, at least 20 units were laid up due to being either, surplus to requirements, due to accident damage or catching fire.
The rationalization of the locomotive fleet in the late 1980s led to the withdrawal of three NZR-built DSCs in 1989.  Between 1989 and 1990, two units were laid up after being damaged by accidents. Between 1998 and 2013, at least 20 units were laid up due to various reasons including surplus, accident damage, or fires.