The Dennis Dart was in service between 1994 and 2011. After being taken out of service 92 (formerly M1, Ghim Moh to Science Park II) in 2010, the remaining fleet operated on Service 42 (formerly M2) till their end of lifespan a year later, serving the landed estate of Kembangan.
Despite its size, the Dennis Darts were not the smallest SBS buses in that era; that title went to the Nissan Civilian minibuses that were introduced by Singapore Bus Services in 1990. Furthermore in 1992, 5 Mercedes-Benz 811Ds were purchased for the two above-mentioned suburban services. These 811D minibuses were bodied by Asia Coach, had an interior similar to the B10M Mark III fleet, and were fully retired by 2003.