Their interior destination displays and public announcement system has been long turned off.

Like all DART units, the 8500 Class are maintained at Fairview depot, and are also stabled at Bray Station.

Other differences include the presence of destination/next station displays above the windows of 8510s and the use of LED tail lights and headlights on 8510s in contrast with ordinary ones on the 8500s.

They were the first units to carry the revised DART logo and also the first to be fully air conditioned.

This refurbishment included new exterior LED destination displays on the front and side, new interior displays showing information such as the destination, next stop and time & a new PA system.