BYD B series

BYD B series
A BYD B12A03 in Singapore, operated by SBS Transit
Overview
Manufacturer	BYD Auto
Production	2020–present
Assembly	China: Hangzhou, Zhuhai
Designer	Wolfgang Egger
Body and chassis
Class	Battery electric bus
Body style	Single-deck bus, double-deck bus and articulated bus
Doors	2-3
Floor type	Low floor
Powertrain
Engine	Electric wheel hub motor (TZ2912XSB/TZ290XSE) or single motor (TZ240XSA/TZ400XSA)
Electric motor	Permanent-magnet synchronous motors
Propulsion	IGBT–VVVF
Battery	301 kWh (B10) 355 kWh (B12)
Electric range	355 km (B10) 315 km (B12)
Chronology
Predecessor	BYD K series

The BYD B series are a line of battery electric buses produced by Chinese vehicle manufacturer BYD. It is the first bus model powered by BYD's Lithium Iron Phosphate Blade electric-batteries. It is available as a 10-metre single-deck (B10), a 11-metre double-deck bus (BD11), a 12-metre single-deck (B12), a 12-metre tri-axles double-deck (B12D), a 15-metre tri-axles single-deck (B15) and a 18-metre articulated bus (B18). ^{[1] [2] [3]}

History

The BYD B series was launched on 29 July 2020, superseding the highly popular BYD K series. The bodywork was designed by Wolfgang Egger. ^[4] According to BYD, the new bus models feature LED water lamps, USB charging ports, newer-generation wheel hub motors which are 6% more energy-efficient, as well as a lightweight aluminum frame reducing the body weight by up to 10%. ^[1]

Operations

BYD B10 operated by Western Bus in Shenzhen

A BYD B12D double-decker bus of Kowloon Motor Bus in Hong Kong

A BYD B12 bus arriving near Sudirman railway station, Jakarta

Mainland China

• Jinan: 340 BYD B10 buses were delivered in July 2022. ^[5]
• Changzhou: The first B series buses entered service in 2021. ^[6]
• Shenzhen:
  • Western Bus operated a fleet of 88 BYD B10s as of 2020. ^[7]
  • 10 BYD B12D double decker buses are used for tourist sightseeing services debut in October 2020. ^[8]
  • BYD BYD6871B2EV1 (B8) units was also first revenue service in 2021.
• Zhongshan: 50 BYD B10s were delivered in 2022.
• Yichang: A fleet of 10 BYD B18s entered service on the local BRT line. ^[9]
• Many other Chinese cities have bought the B10 or B12, including Wuhan, ^[10] Guangzhou (as GAC BYD), ^[11] Guiyang ^[12] and Changzhou.

Asia Pacific

• Hong Kong:
  • 16 BYD B12A buses entered service with Kowloon Motor Bus in 2022. These electric buses are the first B series buses built to right hand drive specifications. ^{[13] [14] [15]}
  • 41 BYD B12D buses were also delivered to KMB in 2023. These buses were first deployed on route 213M in July that year. ^{[16] [17]}
• Japan: 2 B10 units entered service with Keihin Kyuko Bus in 2024. ^[18]
• Indonesia: 30 B12As were delivered to TransJakarta in 2022. ^{[19] [20]}
• Singapore:
  • In November 2022, ComfortDelGro took delivery of several BYD B12A03 buses with three doors, to be used on Internal Shuttle Bus services (ISB) within the National University of Singapore and Nanyang Technological University. These buses, along with Zhongtong N12 buses which entered service earlier, will gradually replace all diesel-powered buses on ISB routes. ^{[21] [22]}
  • A BYD B12A03 Single-deck Bus, also featuring three doors, was showcased at the Singapore International Transport Congress & Exhibition 2022. ^{[23] [24] [25]} After the exhibition ended, the bus was modified, repainted lush green livery and entered service under SBS Transit on 14 January 2024. It was registered as SG4013A. The bus is deployed on bus routes 70, 138^*, 162 and 265. * The bus was not approved on 138 by LTA due to the third door not being able to fit in the bus stop. It was trial ended from February 2025 and returned to BYD Auto. ^[26]
  • On 25 November 2023, the Land Transport Authority (LTA) announced that it had awarded a contract to BYD to purchase 240 BYD GTK6127BEVB (BC12A04) buses, with an option for 60 more exercised on 23 October 2024. They had entered revenue service on 2 December 2024, ^[27] initially deployed by SBS Transit on bus routes 86, 107/107M and 159. Over the next few months, the buses were gradually deployed on more bus routes such as 51, 80, 112, 113, 115, 116, 117, 151, 153, 163, 165, 325, 371, 372 and 374.
  • A new BYD GTK6127BEVS (marketed as B12DS) electric double-deck 3-door 2-staircase bus made its debut in Singapore International Transport Congress & Exhibition (SITCE) 2024. This BYD GTK6127BEVS bus was specially designed for the Singapore market, with bodywork by Zhuhai Guangtong Vehicle Manufacture. It may be accepted as a trial bus by the Land Transport Authority, due to its vision of having half of the public bus fleet to be electric by 2030, and its recent preference for double-deck buses to have the 3D2S configuration.
  • On 28 July 2025, A new batch of 14 BYD GTK6127BEVB (BC12A04) buses has been delivered in orange livery with the same interior layout. these will be operated by Tower Transit Singapore on behalf of Sentosa. These electric buses will be replacing existing diesel buses as part of a 5-year operating contract. ^[28]

Europe

BD11 in London on Superloop 4

• Finland: Nobina ordered 42 B15s for service in Turku. ^[29]
• United Kingdom: BYD BD11s entered service for Transport for London (TfL) in December 2024. ^{[30] [31]} Additionally, B12 single-deck electric buses have also been made to TfL specification and are due to enter service. ^[32]

South America

• Chile: 10 B12D double deckers entered service in mid-2023 on Route 520. ^[33] Transantiago ordered a demonstrator B18C01 articulated bus which entered service on Route 516 that same year.

Awards

B12 at Busworld Europe 2023

On 7 January 2022, it was announced that the BYD B10 had won the "2021 Transporter Word-of-Mouth New Energy Bus Award". ^[4]

References

1. "B12". cv.byd.com. Retrieved 2022-12-10. "全新一代轮边驱动桥，驱动效率提升6%，最大程度提高运营效益；" " 第四代铝合金车身，较上一代重量降低10%，同级别同电量车型整备质量最轻，最多可轻300-500kg。"
2. "B10". cv.byd.com. Retrieved 2022-12-12.
3. "BYD's New Blade Battery Set to Redefine EV Safety Standards - BYD USA". BYD USA. Retrieved 2022-12-10.
4. laitimes (2022-01-27). "BYD B10 Bus won the "2021 Transporter Word-of-Mouth New Energy Bus Award"". laitimes. Retrieved 2022-12-22.
5. 电车汇 (2022-07-25). "400台比亚迪纯电动公交车在济南投运". finance.sina.com.cn (in Chinese). Retrieved 2022-12-10.
6. "Sina Visitor System". passport.weibo.com. Retrieved 2022-12-10.
7. "比亞迪B10爲何能夠成爲2020純電動公交車科技之王？ - 人人焦點". ppfocus.com (in Chinese). Retrieved 2022-12-11. 2020年購入的88輛比亞迪B10純電動公交車，則成爲了深圳公交系統一道靚麗的風景線。
8. "10 units BYD Double-decker Tourist Buses B12D Debut at Shenzhen". m.chinabuses.org. Retrieved 2022-12-17.
9. 商用汽车新闻 (2021-10-22). "技术引领，细节走心！首批比亚迪B18铰接车投运宜昌公交_运营". www.sohu.com. Retrieved 2023-11-07.
10. "武汉公交集团 比亚迪BYD6100B1EV1". Buspedia.top. Retrieved 2023-09-20.
11. "一汽巴士 广汽GZ6102B2EV". buspedia.top. Retrieved 2023-09-20.
12. "贵阳公交 比亚迪BYD6102B2EV2". buspedia.top. Retrieved 2023-09-20.
13. 黃文琪 (2021-05-27). "多圖｜九巴訂購比亞迪B12純電動巴士即將付運". 香港01 (in Chinese (Hong Kong)). Retrieved 2022-12-17.
14. "KMB's new-generation electric single-decker to commence service Moving forward in upgrading the entire fleet to new energy buses". The Kowloon Motor Bus Co (1933) Ltd. 2022-04-25.
15. "Electric Bus | KMB's new domestic BYD single-deck electric bus arrives in Hong Kong, the world's first B12A right-handed version | Truck Bus Trailer - Directory & News - buslibrary - oemlibrary - trucklibrary". 24 July 2021. Retrieved 2022-12-12.
16. "KMB received its first electric double-decker with 300 kilometres driving range, the highest in Hong Kong". The Kowloon Motor Bus Co (1933) Ltd. Retrieved 2022-12-17.
17. 鄧康翹 (2023-07-27). "九巴首部電動雙層巴士7.30投入服務 「電光綠」車身行走213M線". 香港01 (in Chinese (Hong Kong)). Retrieved 2023-09-20.
18. "（京急バス）3月上旬から大型電気バス2台運行開始". 京浜急行電鉄 (in Japanese). Retrieved 2024-02-18.
19. "Thirty Electric Buses Hit the Streets of Jakarta". Jakarta Globe. 2022-03-09. Retrieved 2022-12-10.
20. antaranews.com. "30 electric buses start rolling in Jakarta". Antara News. Retrieved 2022-12-17.
21. Ch’ng, Ryan (2022-11-06). "Three-Door Electric ISBs for NUS: BYD B12". The ISB Man. Retrieved 2022-12-10.
22. "Company Profile – BYD SINGAPORE" . Retrieved 2022-12-10. 10 units of B12-A03 single-deck (3-door) bus was sold to Comfortdelgro Bus for NTU & NUS university shuttle bus operations.
23. "SITCE 2022". www.sitce.org. Retrieved 2022-12-10. In this SITCE showcase, BYD will be showcasing an exciting new range of electric vehicles ranging from a prime mover, commercial bus and a passenger car.
24. "BYD Unveils Singapore's First Blade Battery-powered Bus at SITCE". BYD. Retrieved 2022-12-17.
25. "BYD Blade-Battery Bus B12A03 Makes Debut at LTA-UITP SITCE_Buses News_chinabuses.org". m.chinabuses.org. Retrieved 2022-12-17.
26. "BYD B12A03". Land Transport Guru. 2023-07-23. Retrieved 2023-10-08.
27. Kok, Yufeng (2024-10-23). "Another 10 electric public buses to ply Singapore roads from December". The Straits Times. ISSN   0585-3923 . Retrieved 2024-10-24.
28. "Tower Transit to run bus services, beach shuttle on Sentosa for 5 years". The Straits Times. 2025-05-30. Retrieved 2025-07-29.
29. BYD electrifies Finnish market for first time Coach & Bus Week 13 October 2020
30. "BYD BD11 electric buses set for London routes". Power Progress. 2024-06-04. Retrieved 2024-10-24.
31. Nolan, Stella (2024-05-22). "BYD's New Double Decker Bus Enters London's Transport System". evmagazine.com. Retrieved 2024-10-24.
32. Williams, Mark (18 November 2024). "BYD unveils new single-deck electric and production 'decker". Bus & Coach Buyer. Retrieved 18 January 2025.
33. "New electric double-decker buses that will operate in the RED Movilidad system are unveiled". Government of Chile. Retrieved 2023-11-09.