(101-139) were brand new with MkII bodies, while another 20 (140-159) were second-hand buses purchased from South Yorkshire PTE with MkI bodies, some of them with dual-doors. Argos Bus purchased 6 Metrobuses for their non-franchised routes and private hire services between 1988 and 1989. They were from the same batch as those bought second-hand by KCRC. KMB purchased eight further 2-axle Metrobuses (M81-M88) in 1989. These buses were fitted with Cummins LTA10-B282 (282 hp) engines and Voith D864G 4-speed gearbox, and were used on the hilly KMB Route 51 (between Tsuen Wan and Kam Tin, climbing Tai Mo Shan along its way). Later KMB fitted some of its older Metrobuses with Cummins engines, in order to avoid excess damage to buses running the hilly route. Withdrawal The MkI second-hand Metrobuses were the first to be withdrawn, and all of them have since been scrapped. Many of the KCRC Metrobuses were loaned to Citybus for few years before final withdrawal. CMB removed its MC-class Metrobuses from the luxury routes after introducing Dennis Darts for the service in 1991, preserving the seating layout. These Metrobuses were allocated to non-luxury routes in the Southern District, Hong Kong, as well as route 13 serving the "Mid-levels". Although CMB was the first to introduce Metrobuses, it withdrew only 3 of them (all were accident victims) before the end of its franchise in August 1998. Its earliest Metrobuses were 20 years old at that time. New World First Bus purchased all the remaining CMB Metrobuses and Super-Metrobuses when it took over most of the CMB routes, and converted 3 MC-class Metrobuses to training buses. In 2000, the last of the MCW Metrobuses were de-registered, briefly exported to The Original Tour, Big Bus Tours or to Australia. Some of the MCW Metrobuses were brought back to The Original Tour in the year 2006. As of 2013, the last of the examples from United Kingdom were withdrawn. KMB allocated its 3 Super-Metrobuses to the New Territories for many years. For example, they were serving on route 61A (which connected Tuen Mun and Yuen Long new towns) right before the KCR Light Rail took over the services. After that, they were seen on route 36A (which connected a public housing estate in Kwai Chung to a ferry pier) until the route's decline in the mid-1990s. They spent a few further years as spare buses before being withdrawn from passenger