Alexander Dennis Enviro400EV

The Alexander Dennis Enviro400EV is a battery electric double-decker bus from Alexander Dennis, launched in 2018 in partnership with the Chinese maker BYD Auto. The first generation, derived from the Enviro400 City, was built on a BYD K series chassis between 2018 and 2024 and followed the single-deck Enviro200EV as the company's second battery electric model; Metroline put the first 10.9 metre examples into service on London route 43 in 2019. A second generation with a restyled exterior and driver's cab, a Voith driveline with 410 kW peak power and 472 kWh or 354 kWh batteries was announced in November 2022 and first shown complete in November 2023. The range also includes the Enviro400FCEV hydrogen fuel cell bus, introduced in 2021.