Alexander Dennis Enviro400
The Alexander Dennis Enviro400 is a twin-axle low-floor double-decker bus that was built by the British bus manufacturer Alexander Dennis between 2005 and 2018. It replaced the Alexander ALX400, Dennis Trident (from which the Enviro400 was developed) and Plaxton President. In 2014, the Enviro400 was succeeded by the updated Alexander Dennis Enviro400 MMC and production of the classic Enviro400 ceased in 2018.
| Alexander Dennis Enviro400 | |
|---|---|
Coastlink liveried second generation Enviro400, operated by First Norfolk and Suffolk in 2020 | |
| Overview | |
| Manufacturer | Alexander Dennis |
| Production | 2005–2018 |
| Body and chassis | |
| Doors | Single or dual door |
| Floor type | Low floor |
| Chassis | Alexander Dennis Enviro400 Scania N230UD Scania N280UD Volvo B7TL Volvo B9TL |
| Powertrain | |
| Engine | Cummins ISBe/ISCe/ISLe (Enviro400) MAN D0836 (Enviro400) Volvo D7C (Volvo B7TL) Volvo D9B (Volvo B9TL) Scania DC9 (Scania N230UD) |
| Capacity | 64–90 seated |
| Transmission | Voith D854.5E 4-speed automatic ZF 6HP1203B 6-speed automatic BAE Systems HybriDrive |
| Dimensions | |
| Length | 10.2 m (33 ft 6 in) to 11.4 m (37 ft 5 in) |
| Width | 2.55 m (8 ft 4 in) |
| Height | 4.2 m (13 ft 9 in) to 4.3 m (14 ft 1 in) |
| Curb weight | 17,800 kilograms (39,200 lb) |
| Chronology | |
| Predecessor | Alexander ALX400, Dennis Trident 2, Plaxton President |
| Successor | Alexander Dennis Enviro400 MMC |
The Enviro400 is available both as an integral bus and as a standalone bodywork and chassis. The Enviro400 chassis replaced the Dennis Trident 2 (and continued to be badged as the Trident for a time) and was formerly available with East Lancs Myllennium Lolyne and Optare Olympus bodywork; the Enviro400 body replaced the Alexander ALX400 and Plaxton President designs and was sold on Scania N230UD and Volvo B9TL chassis.
The engine of the integral Enviro400 is a six-cylinder Cummins driving through a Voith or ZF automatic transmission, although a MAN D0836 engine began to be offered from 2007. A hybrid-electric version of the powertrain developed by BAE Systems was also available.