K230UB4x2LB would be a two-axle "low entry" city bus, while K480EB6x2*4NI would be a tri-axle long-distance coach with a steerable tag axle.

For the 5- and 6-cylinder engines Scania is using exhaust gas recirculation (EGR) and selective catalytic reduction (SCR) systems to fulfill the legal Euro emission standards.

In New South Wales, Busways and ComfortDelGro Australia's CDC NSW and Hunter Valley Buses subsidiaries have significant numbers of K230UB, K280UB and K310UB in their fleet.

After undergoing tests, the first few units were finally introduced on route 2C plying between Yau Yat Tsuen and Tsim Sha Tsui on Sunday, 24 May 2009.

In 2016, the Jakarta Provincial Government placed orders for 150 Scania K250UB Euro III to replace aging Kopaja and MetroMini fleet.

[14] In 2020, Suroboyo Bus purchased eight Scania K250UB Euro III buses bodied with Cityline 3 by Laksana.

The bodywork and interior of these buses bear a close resemblance to the Euro IV / V units Singapore's SBS Transit had introduced earlier.

Because of the additional weight of the 9-litre engine compared to the 7-litre units offered by other manufacturers, many (though not all) Scania urban buses are specified as 6x2 rather than 4x2.

This helps reduce the operator's liability for road user charges, which are calculated by vehicle weight.

Because Scania K-series buses had a longer rear overhang than competing makes, the allowable overhang with a steerable tag axle was increased from 4.25 m to 4.5 m. The Scania K280 UB 6x2*4 and K320 UB 6x2*4 have been popular chassis for operators building high-capacity single-deck buses.

The company made its first purchase of 500 K230UBs[16] at a cost of S$180 million in early 2007, as part of its scheme to replace most of the ageing fleet and compliance with the new Euro IV emission standards set by local authorities.

They are also fitted with 6-speed ZF automatic transmission, and were assembled local in Singapore by ComfortDelGro Engineering (CDGE) and SC Auto, using complete knock-down (SKD) kits bodied by Gemilang Coachworks of Johor, Malaysia.

However, these buses had Euro V EEV engine as standard, one wheelchair bay each in favour of extra seating.

In August and September 2024, 39 more K230UBs were leased to SMRT Buses as part of the Jurong West Bus Package.

[20] Similarly, with the mass influx of BYD BC12A04 three-door single deck buses, 11 Scania K230UBs will be taken out of revenue service to be de-registered and scrapped progressively between October and December 2024.

[citation needed] All the 56 remaining Euro IV KUBs will be extended for two years due to insufficient delivery of electric buses.

The bus was intended to support SBST's community outreach efforts, and was launched by Acting Minister for Transport Chee Hong Tat on 4 November.

[21] Singapore Ducktours has 9 Scania K230UBs (3 under 2007, 4 under 2010 and 2 under 2011), configured as open top double-decker buses with bodywork by Soon Chow Corporation for its Hippotours service.

Upon withdrawal of the shuttle services (due to the closure of Budget Terminal), these buses were repainted into SATS gateway livery and are used inside the Airport runway.

Resorts World Sentosa operates a handful of KUBs to provide shuttle services for its hotel guests.

ComfortDelGro Bus also operates a handful of SC Auto-bodied K230UBs, purchased for the National University of Singapore internal shuttle service.

[22] Two units of Scania K230UB have been in operation by Ho-Hsin Bus (zh) in Tainan City since 2014, with bodywork by Gemilang Coachworks.

Two K270UB4x2LB chassis with ZF automatic gearbox were bought by capital city Montevideo's urban and suburban bus operator UCOT (Union Cooperativa Obrera del Transporte/Cooperative Worker Union of Transport) and bodied in Brazil with Marcopolo Gran Viale LE bodywork in 2011 as testing units for a potential mass buyout of units in an incumbent partial fleet renovation arriving in July of that year.

The bus was designed in close co-operation with the body constructor Salvador Caetano (Waterlooville) in order to save weight.

KMB also received two Scania K280UD buses in late 2014 with newly designed Salvador Caetano bodywork.

These two buses feature orange Hanover LED destination signs and uses high capacity layout with square staircase.