Mercedes-Benz O530 Citaro

Mercedes-Benz O530 (Citaro)

SBST Mercedes-Benz Citaro - Service 24

SBS Transit Mercedes-Benz Citaro

Other names Mercedes-Benz Citaro
Manafacturer EvoBus GmbH
Year 2010, 2011–
Local Operators SBS Transit
SMRT Buses
Tower Transit
Go Ahead Singapore
Technical Data
Length 12m
Width 2.55m
Entry Fully low-floor
Engine Mercedes-Benz OM906hLA
Gearbox ZF Ecomat 6HP 592C
ZF EcoLife 6 AP 1200 B
Voith DIWA D854.5
Emission Standard Euro V (SCR)


The Mercedes-Benz O530 Citaro is a low-floor wheelchair-accessible single-decker transit bus built by Mercedes-Benz and EvoBus GmbH. Commonly referred to as simply the “Citaro”, they are manufactured in Europe and shipped completely built-up (CBU) to Singapore.

First introduced into Singapore in 2010, the Citaro has proved popular among both public transport operators. SMRT Buses first trial unit received positive feedback from the public, and additional buses were ordered and delivered in 2011. SBS Transit followed suit, and made one of the largest Citaro orders to date, with a first batch of 300 buses, later increased by an additional 450 and another order of 250 more in 2014.

Currently, SBS Transit and SMRT Buses both operate Mercedes-Benz Citaro buses in Singapore. Later in 2016,  Tower Transit and Go-Ahead Group, the successful tenderers of the Bulim and Loyang Bus Packages respectively, will also operate Mercedes-Benz Citaro buses procured under the Government Contracting Model (GCM).

They are mostly similar in technical specifications, with differences only in the interior. In Europe, these would be referred to as ‘face-lifted Citaros’ (Year 2005) to differentiate them from the first generation of Citaros, which were produced since 1997.

Technical Data:

All Citaros in Singapore are of the 2nd-generation 12-metre urban model with two doors. They fulfill the requirements of the Euro 5 and EEV emissions standards using BlueTec 5, the selective catalytic reduction (SCR) technology developed by Mercedes-Benz, hence requiring the use of AdBlue as a diesel additive.

The fully low floor design is attributed to its small rear, side-mounted engine which allows for smoother passenger entry and exit.

As with thousands of other units around Europe, the Citaro is completely built up by EvoBus, including its interior features (rather than a local assembly/bodywork) by factories in Europe, then shipped as a completed bus to Singapore. Local Citaros are produced in Mannheim, Germany.


  1. SMRT Demonstrator Unit (SMB136C)
  2. SMRT Production Batch 1
  3. SMRT Production Batch 2
  4. SBS Transit’s Citaros
  5. SBS Transit Production Batch
  6. SBS Transit BSEP Batch


Overview of Singapore Operations

SMRT brought in the first Citaro into Singapore for demonstration purposes. A Year 2005 face-lifted Citaro, it was registered as SMB136C, and entered service in March 2010, prided as ‘Southeast Asia’s 1st 100% Low Floor Euro V Bus”. The bus was a well-conceived continuation of SMRT’s legacy with Mercedes-Benz buses, following its long history of operating O405s and O405Gs. Positive public feedback paved the way for more Citaros in Singapore.

By 2011, the exemption of Additional Registration Fee (ARF) for public buses made importing the foreign-built Citaros much more affordable. SMRT acquired 10 units in its first production batch in early 2011, followed by an additional 40 more units by late 2011, bringing a total of 51 units.

SBS Transit had put its confidence behind the Citaro with a first batch of 300 Citaros intended for fleet replacement and expansion, among the largest orders at the time. Technical specifications were highly similar to SMRT’s Citaros, and buses were delivered between 2011 and 2012. A further order of 450 additional Citaros are currently under delivery, expected to be completed by 2015. In July 2014, SBS Transit placed an additional further order of 250 Citaros.


Demonstrator Unit (SMB136C):

After SMRT Buses brought in its first batch of wheelchair-accessible Mercedes-Benz OC500LEs in 2008-2009, there was a need to expand the bus fleet with more wheelchair-accessible buses to further cater to passenger demands. For Mercedes-Benz, the Citaro was the direct successor to the O405 series of buses, which SMRT operated in large numbers (along with the articulated O405G variant). The fully low-floor design, ride comfort and environmentally friendly technology was promising, and SMRT decided to bring in one unit for trial purposes.

^ SMB136C: Singapore’s first Mercedes-Benz Citaro

Registered as SMB136C, the bus was unveiled on 9 March 2010 at a launch ceremony in SMRT’s Ang Mo Kio Depot, exactly one day after its date of registration. Along with a promotional livery, it was marketed as “Southeast Asia’s 1st 100% low-floor Euro V bus”. Fitted with Mercedes Benz’s standard 6.4-litre OM906hLA with 286hp, it delivers impressive performance while fitted to a six-speed ZF Ecomat transmission (similar to those on the OC500LE). It is also the first bus in Singapore to feature electronic destination signages (EDS) by Gorba AG. SMB136C entered revenue service exactly a week later, appearing on SMRT Service 855 on 16 March 2010. It was placed under a one-year trial on various trunk and feeder routes that was ultimately successful, with much positive feedback from passengers.

Read more about SMB136C here.

Basic Technical Specifications
Engine Mercedes-Benz OM 906 hLA, turbocharged & inter-cooled, 6374cc
Power/torque rating of 286 hp (210 kW) @ 2200 rpm / 1120 Nm @ 1200 – 1600 rpm
Emission Standard Euro V compliant
BlueTec Selective Catalytic Reduction (SCR) emissions control technology by Daimler AG, requiring diesel exhaust fluids such as AdBlue.
Transmission ZF Ecomat II 6HP 592C gearbox, six-speed automatic
Bodywork Built in Germany by EvoBus, shipped completely built-up (CBU) to Singapore
EDS Gorba imotion Electronic Destination Signage (EDS), Orange LED matrix design
Air-conditioning Konvekta P700 roof-mounted air-conditioning pod


SMB136C interior layout

SMB136C interior layout. Click for larger image.

SMB136C has a licensed capacity of 83 passengers, including 38 seating passengers, 44 standing passengers and one wheelchair.


SMRT Production Batch 1: SMB139U – SMB148T

Following the successful trial of SMB136C, SMRT Buses purchased 10 Mercedes-Benz Citaros as part of it’s fleet renewal programme. This was spurred by LTA granting public buses an exemption from the Additional Registration Fee (ARF), making importing the Citaros significantly more affordable. The buses were registered as SMB139U – SMB148T between March and May 2011.

This batch of buses retain the major technical specifications of SMB136C, with minor changes such as a newer-generation six-speed ZF Ecolife gearbox (EcoLife 6 AP 1200 B) for SMB139U till SMB147X, but a Voith DIWA for SMB148T.

Basic Technical Specifications
Engine Mercedes-Benz OM 906 hLA, turbocharged & inter-cooled, 6374cc
Power/torque rating of 286 hp (210 kW) @ 2200 rpm / 1120 Nm @ 1200 – 1600 rpm
Emission Standard Euro V compliant
BlueTec Selective Catalytic Reduction (SCR) emissions control technology by Daimler AG, requiring diesel exhaust fluids such as AdBlue.
Transmission SMB139U till SMB147X: ZF EcoLife 6 AP 1200 B (6-speed automatic)
SMB148T: Voith DIWA D854.5 (4-speed automatic)
Bodywork Built in Germany by EvoBus, shipped completely built-up (CBU) to Singapore
EDS LAWO BENEFIT Electronic Destination Signage (EDS), Orange LED matrix design
Air-conditioning Konvekta P800 roof-mounted air-conditioning pod
SMRT's Batch 1 Citaro

SMRT’s Batch 1 Citaro. Click for larger image.

Aesthetic features were fully-customized to SMRT Buses standards. Production batch Citaros use LAWO BENEFIT electronic display signages, with an upgraded nearside display to show route details along with the service number. SMRT’s Passenger Information System (PIS) is integrated into the interior, replacing the bus stopping indicator.

The original hopper windows (with little use in a tropical country) on SMB136C were changed for full-sized windows. The rear door has been changed to a out-swinging plug door, with an additional visual indicator that lights up when the doors are closing.

Seat covers have also been changed to a blue and purple theme, similar to those used in the OC500LE, and priority seats with red seat covers. The PVC seat covers are easier to maintain compared to SMB136C’s fabric seats. On 21 March 2011, these production batch buses began their debut on services 75, 531, 920 and RWS8 Staff.

Batch 1 Citaros have a licensed capacity of 83 passengers, including 38 seating passengers, 44 standing passengers and one wheelchair.

SMRT's Batch 1 Citaro Interior. Click for larger image.

SMRT’s Batch 1 Citaro Interior. Click for larger image.


SMB148T: The Unofficial SBS Transit Citaro Prototype

SMB148T was part of the Batch 1 Citaros, but was only registered in May 2011 (while 139 – 147 were registered in March 2011). The bus was delivered with a four-speed Voith DIWA, different from it’s ZF Ecolife cousins in Batch 1. After delivery, it was retained with Mercedes-Benz’s local dealer, Jardine Cycle & Carriage (C&C) for two months where it was fitted with a mock-up interior for SBS Transit for trialing purposes. It was later re-assembled with SMRT interior configuration, registered and handed over to SMRT in May 2011, making its debut on Premium 531.

The interior fixtures are similar to its Batch 1 cousins, and its most distinguishing feature is the Mercedes-Benz badge at the front of the bus, which is not filled up in black.

SMRT's Batch 1 Citaro: SMB148T

SMRT’s Batch 1 Citaro: SMB148T. Click for larger image.


SMRT Production Batch 2: SMB149R – SMB188C

With the success of the first production batch, a second batch of 40 SMRT Citaros were registered between October and November 2011, in numerical order (SMB149R – SMB188C).  The gearbox was changed to the default 4-speed Voith DIWA D854.5, similar to the one installed in SMB148T and all SBS Transit Citaros. Additional grab poles were installed above the wheel arch and at the side of the wheel arch seats (granny seats) for additional safety.

Batch 2 Citaros have a licensed capacity of 83 passengers, including 38 seating passengers, 44 standing passengers and one wheelchair.

SMRT Batch 2 Citaros

SMRT Batch 2 Citaros. Click for larger image.

As SMRT Buses’ New Livery was rolled out, SMB140P and SMB179D received new corporate liveries.


SBS Transit’s Mercedes-Benz Citaros:

While SMB136C was still under trial by SMRT, SBS Transit announced its purchase of 300 face-lifted Citaros (similar in appearnce to SMRT’s Production Batch) to replace its retiring Volvo B10M Mk IIIs. This was the largest Asian order of Citaros to date. Buses in Batch 1 were procured at a cost of $110 million and were registered between April 2011 and August 2012.

With the success of the first batch of Citaros, a follow-up order of 450 Mercedes-Benz Citaros was announced as part of its fleet renewal programme. Buses in Batch 2 were registered from January 2013 onwards, and deliveries are expected until 2015.

In July 2014, a further order of 250 Citaro buses was placed, with deliveries expected starting from mid-2015. Batch 3 buses will arrive in mid-2015. The large number of orders is indicative of SBS Transit’s desire of fleet standardization for the future.

Breakdown of orders is as such:

Production Batch BSEP Units Year
Batch 1 SBS6000L – SBS6285G
(258 units)
SBS6300X – SBS6341C
(42 units)
2011 – 2012
(300 units total)
Batch 2 SBS6600E – SBS6865H
(266 units)
SBS6342A – SBS6549X
(208 units)
2013 – 2015
(474 units total)
Batch 3 SBS6866E – SBS6893B
(??? units)
SBS6546D – SBS6599B,
SBS2000M – SBS2004C
(??? units)
(250 units total)


At the same time, the Bus Service Enhancement Programme (BSEP) was gaining traction, and to support the expansion of the BSEP, some Citaro buses would be transferred over to Government ownership. These BSEP-registered units are purchased by the Government, as funded by the BSEP budget. In 2015, to support the gradual implementation of the Government Contracting Model (GCM), Citaro buses were procured by tapping into SBS Transit’s existing orders, and will thereafter be leased out to successful tenders of the various route packages. Early batches of these buses were registered immediately with the SG-prefixed registration plates without having to be registered with a SBS-prefix registration plate.

It is worth noting that SBS Transit’s Batch 1 and 2 Citaros are of the 2005-facelifted version, although Mercedes-Benz had launched a newer facelifted version in 2011. The older design was acquired in bulk likely as a cost-saving measure and to promote fleet standardization.


SBS Transit Production Batch (SBS6000L – SBS6285G, SBS6600L – )

SBS Transit’s first batch of Citaros were registered between April 2011 and August 2012, intended to replace their retiring Volvo B10M MkIIIs. 300 2005-facelifted Citaros were ordered a cost of $110 million, which was then the largest Asian order of Citaros to date. However, only 258 would be registered under the Production Batch and the remainder under the BSEP scheme. (SBS6000L – SBS6285G, with unused registration numbers)

Technical specifications of the new batch are very similar to those in SMRT’s production batch. SBS Transit opted for the default 4-speed Voith DIWA D854.5 while retaining the OM906hLA engine. Similar to SMB136C, the bus operates on BlueTec® SCR engine technology, enabling it to achieve the Euro V emission standard, similar to their last-ordered Scania K230UBs.

The large order of Citaros was made possible with LTA’s exempting public transit buses from the Additional Registration Fee (ARF), enabling SBS Transit to acquire the Citaros at a much cheaper price and in bulk. A handover ceremony was organised on 16 May 2011 at SBS Transit’s Ang Mo Kio Depot with the first two SBS-registered Citaros, SBS6000L and SBS6001J. SBS6000J entered revenue service on 1 June 2011 on Service 28 between Tampines and Toa Payoh.

SBS6000L pre-debut. Click for larger image.

SBS6000L pre-debut. Click for larger image.

SBS6000L's debut on Service 28. Click for larger image.

SBS6000L’s debut on Service 28. Click for larger image.

Basic Technical Specifications
Engine Mercedes-Benz OM 906 hLA, turbocharged & inter-cooled, 6374cc
Power/torque rating of 286 hp (210 kW) @ 2200 rpm / 1120 Nm @ 1200 – 1600 rpm
Emission Standard Euro V compliant
BlueTec Selective Catalytic Reduction (SCR) emissions control technology by Daimler AG, requiring diesel exhaust fluids such as AdBlue.
Transmission Voith DIWA D854.5 (4-speed automatic)
Bodywork Built in Germany by EvoBus, shipped completely built-up (CBU) to Singapore
EDS LAWO HIGHLED Electronic Destination Signage (EDS), Orange LED matrix design
Air-conditioning Konvekta P800 roof-mounted air-conditioning pod


On the outside, the most distinguishing feature is the LAWO Electronic Destination Signage (EDS) which appears clearer than SMRT’s Citaro EDSes. The LAWO HIGHLED used in SBS Transit Citaros are a much denser array of LEDs to display clearer text, and they are able to form images such as those used in Express and Fast-Forward routes. The swinging-plug exit door is same as those on SMRT’s production batch.

The seating configuration is similar to SMRT’s Production Batch of Citaros, with the exclusion of two seats and the foldable-seat at the wheelchair bay, allowing for a larger standee area. The foldable seat is replaced with a simple backrest. Seats use PVC covers in SBS Transit’s colour scheme; yellow seats between the front and rear doors, and red seats for the rear half of the bus. A manual wheelchair ramp is fitted at the rear door as a standard specification.

The first few buses in this batch were equipped with a larger palm-type bus stopping bell pushes, but subsequent buses had reverted to the normal push-button-type bus stopping bell. The larger bus stopping bell could be easily triggered by leaning on it, causing frequent false indications to the driver, and these were eventually replaced with normal push-button-type bells.

From SBS6150L onwards, larger and more air-conditioning vents were installed to cope with tropical weather.

Finally, the bus stopping sign has been integrated into the design, similar to SMB136C, but instead just shows the word “STOPPING”.

SBS6000L's interior. Click for larger image.

SBS6000L’s interior. Notice the palm-type bell pushes which have since been replaced. Click for larger image.

SBST Express and Fast-Forward EDSes on the LAWO HIGHLED. Click for larger image.

SBS Transit Express and Fast-Forward EDSes on the LAWO HIGHLED. Click for larger image.

Second Batch:

With the success of the first batch of Citaros, SBS Transit decided to follow-up with a second batch of Citaros as part of its fleet renewal programme. 450 Mercedes-Benz Citaros and another 550 Volvo B9TL Wrights will be added at a cost of $433 million SGD. Of the 1,000 new buses, 260 will be funded by the Government under the Bus Services Enhancement Programme (BSEP), while SBS Transit will fund the 740 buses under its growth and fleet replacement plans. Midway through delivery, there was an unannounced additional order of 24 buses for this batch, bring the total to 474 buses. Out of the 474 new Mercedes-Benz Citaros, 266 buses are under the Batch 2. The remaining 208 buses are under the BSEP scheme.

Buses in this batch have minor additional features compared to the Batch 1, such as extra CCTVs and an extra grab pole at the front of the bus, beside the driver’s cabin. They were registered from SBS6600E to SBS6865H.

Third Batch:

A third batch of 250 Mercedes-Benz Citaros was announced in July 2014. Deliveries began from mid-2015, with a portion of these orders funded under the BSEP scheme. SBS Transit’s own units were registered from SBS6866E – SBS6893B, continuing in numerical sequence after the Batch 2 buses. The remainder buses are registered under the GCM which will be elaborated further below.

They feature:

  • Same flooring design for raised parts of the bus and the floor of the bus.
    (The first 23 batch 3 buses, batch 2 & 1 buses had a grey floor design on the raised part of the bus at the seating area after the exit door)
  • Leg safety panel directly after exit door and standee area changed from frosted glass to black glass.
  • Reduced height of exit door sensor

SBS Transit’s Mercedes-Benz Citaros have a licensed capacity of 90 passengers, including 35 seating passengers and 55 standing passengers (excluding wheelchair passengers).


SBS Transit BSEP Batch (SBS6300X – SBS6599B, SBS2000M – SBS2004C)

For background information on the BSEP, read the Bus Services Enhancement Programme article.

As part of the BSEP scheme, portions of incoming deliveries were registered under the BSEP scheme. These buses are fully funded by the Government.

As far as technical specifications and interior design are concerned, these buses are identical to their normal Batch 1 cousins. But under the BSEP, they are subject to strict deployment regulations. No commercial advertising is allowed on these buses, and deployment is restricted to BSEP-introduced or BSEP-enhanced bus routes.

The BSEP Batch of Citaros started off with 42 buses, which were originally part of the Batch 1 of Citaros. They were registered between Sep 2012 and Dec 2012 as SBS6300X – SBS6341C. These 42 buses accounts for the gap of the registration numbers for the Production Batch 1 Citaros which was originally intended to be SBS6000L – SBS6299S.

SBST BSEP Batch 1 Citaros. Click for larger image.

SBS Transit BSEP Batch 1 Citaros. Click for larger image.

An additional second order of 450 Citaros saw the expansion of the BSEP Batch, with an additional 208 buses. Buses were registered from Jan 2013 till Mar 2015 as SBS6342A to SBS6549X.

SBST BSEP Batch 2 Citaros. Click for larger image.

SBS Transit BSEP Batch 2 Citaros. Click for larger image.

A further third order of 250 Citaros expanded the BSEP Batch further, and buses are still undergoing registration. Initially registered in continuation of numerical order as SBS6550R – SBS6599B, the numeric sequence later jumped to SBS2000M to SBS2004C to avoid confilict with the 66xx series of Batch 2 Citaros.


Transition to Government Contracting Model (GCM)

As part of the GCM, LTA would purchase buses from both SBS Transit and SMRT Buses to lease them to the winning transport operators of the various route packages. The bus models for this scheme include SBS Transit’s Mercedes-Benz Citaros, SBS Transit’s Volvo B9TL Wrights, SMRT’s MAN A22s and SMRT’s Alexander Dennis Enviro500s.

LTA has initiated the GCM initially using buses destined for SBS Transit but registered under the Bus Service Enhancement Programme (BSEP). These buses, destined for service with SBS Transit fleet but owned by the Government, were rerouted to operators of the first few GCM packages such as Tower Transit, the initial operator of the Bulim Bus Package. As such, several new Citaro buses built to SBS Transit (Third Batch) specifications would be registered from SG1001D onwards.

To further expand the GCM bus pool, the LTA said on 29 December 2015 that it would take over SBS Transit’s bus purchasing contracts worth S$164 million for 346 new bus purchases, scheduled for delivery in 2016 and 2017. It will also directly buy 50 buses, worth about S$23 million, which were delivered to SBST between June and December this year.

Among the 346 buses to be bought under the contracts, 100 are single-deck Citaro buses, and among the 50 buses to be bought from SBS Transit, 12 are single-deck Citaro buses.

In total, LTA will be buying 112 Mercedes-Benz O530 Citaro single-deck buses. Based on our best guesses, these buses are being drawn from SBS Transit’s Third Batch of 250 units, registered as SBS6866E onwards.

For SBS Transit’s Mercedes-Benz Citaros, buses registered SBS6522Y onwards and SBS6866E onwards do not have the Driver Display Unit (DDU) installed. This indicates that those buses may be destined for LTA’s GCM fleet as the DDU system is only used by SBS Transit to monitor their drivers and new operators of the GCM route packages do not require this DDU system on their bus fleet.

On 11 Feb 2016, 9 Mercedes-Benz Citaro buses were registered as SG1691L SG1699R for SMRT Buses. These buses were originally ordered by SBS Transit and subsequently allocated to the BSEP using SG registration plates. However, they were passed on to be operated by SMRT Buses for the short term, possibly to offset smaller quantities of MAN A22 buses ordered under the BSEP. With insufficient MAN A22 BSEP buses, new BSEP bus services such as Service 805 were introduced running on non-BSEP buses.


SMRT Buses Mercedes-Benz O530 Citaro
Batch Registration Engine Gearbox Introduced Retired Notes
D SMB136C Mercedes-Benz OM906hLA ZF 6HP592C 2009 Demonstrator Unit
Gorba Imotion
P1 SMB139U – SMB147X ZF EcoLife 6AP 1200B 2011 Production Batch /
SMB148T Voith DIWA D854.5
P2 SMB149R – SMB188C 2011
SBS Transit Mercedes-Benz O530 Citaro
1 SBS6000L – SBS6285G Mercedes-Benz OM906hLA Voith DIWA D854.5 2011-2012 LAWO HIGHLED
2 SBS6600E-
2013-2015 LAWO HIGHLED
3 SBS6866E- SBS6893B 2015 LAWO HIGHLED
B1 SBS6300X – SBS6341C 2012 BSEP Batch /
B2 SBS6342A – SBS6549X 2013-2015
B3 SBS6550R – SBS6599B,
SBS2000M – SBS2004C
Government-Owned Mercedes-Benz O530 Citaro
GCM SG1001D onwards,
SG1691L – SG1699R
Mercedes-Benz OM906hLA Voith DIWA D854.5 2015 – GCM Batch /


Summary of SBS Transit Batch deliveries:

Batch 1

  • Original order of 300 units
  • Later split into Batch 1 (285 units) and BSEP Batch 1 (42 units)
  • BSEP buses are funded by the BSEP scheme

Batch 2

  • Original order of 450 units, unannounced increase of 24 additional buses
  • Later split into Batch 2 (266 units) and BSEP Batch 2 (208 units)
  • BSEP buses are funded by the BSEP scheme

Batch 3

  • Order of 250 units, to be split between Batch 3, BSEP Batch 3 and GCM batch
  • Split into 50 Batch 3, 5 BSEP Batch 3 and 195 GCM Batch.
  • BSEP buses are funded by the BSEP scheme
  • GCM batch buses funded by the Government and leased to operators of GCM route packages.
  • 9 Citaros (As of Feb 2016) leased to SMRT temporary under GCM, to be transferred to Tower Transit under Bulim Bus Package



40,000th Citaro sticker on SBS6818U

SMRT Mercedes-Benz Citaro in new livery



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19 thoughts on “Mercedes-Benz O530 Citaro

      • Because Citaros do not have as good an acceleration as MAN buses. The engines are just not as robust. They are also slow to arrive. Having more Citaros means more buses potentially arriving late. Also the braking response time for Citaro is much longer than that of a MAN. Not forgetting the fact that citaros are have noisier than MAN buses and have smokier exhaust emissions.

  1. the acceleration isn’t really that fast as compared to the man buses that they had ordered in bulk. Furthermore SMRT bus timings are usually tighter, so a bus that have quick acceleration will enable the driver to keep on schedule.

    • Yes, citaro buses are always behind schedule compared to other bus models running the same route. Their poor acceleration indeed the cause of their lateness.

    • The engine option for the Mercedes is much smaller than the one found on MAN A22. 1200n/m compared to 1600n/m which explain the slower acceleration. On the bright side, the fact it is fully assembled and built in Germany may indicate better reliability over the 17 years lifespan.

    • Fleet standardization reasons. A homogeneous fleet of similar bus models is easier and cheaper to maintain than having multiple bus model variants.

    • The MAN A22 beats the Citaro in many aspects – performance and emissions-wise.
      Nonetheless, the fully low floor design of the Citaro is commendable.

  2. The problem with SBST Citaros is their acceleration(Low end torque restricted),Super slow and drivers have no confidence overtaking or exiting from stops.A handful of SMRT Citaros is way more faster than SBST’s one.

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