|The model - this is one of two 11.3 metre ADL
Enviro500NG models announced by Model 1 on 12th March 2019, the other
features 4051 (63394/20083). It appears that some
customers in the UK received these models on 13th June 2019.
- New World First Bus allocated the fleet
number series 40xx to it's 11.3
metre Enviro500s. The first forty (fleet nos. 4000-4039) feature
standard Enviro500 models and were registered in 2009/2010. Fleet nos.
4040-4051 feature Enviro500NG models, these twelve being registered
between December 2013 and January 2014 and the final forty (4052-4091)
'facelift' examples, registered between
February and July 2017.