Whopping 3mpg (on a good day) on those citaros
It is peculiar that they do such poorly on fuel economy, The latest Volvo B8L tri-axles across the country are doing quite abit better fuel economy wise according to ZEMO even in an urban environment, their age and the fact they have 5.12 rear diff ratios is simply contributing to this let alone their weight.
The latest Volvo B8L have a 6.20 rear axle fitted which reduced the need for the engine to put in quite as much effort, however, this also means their engines are resting a quite high revs whilst cruising..
The 9 additional Enviro400s from Manchester would directly replace the 9 Citaros so it wouldn't really make any difference to the situation. At least the Manchester Enviro400s seem more reliable than their Glasgow counterparts.
Even without the Hydrogen pump issues Aberdeen have frequently been struggling to make service for the past two years, the issue is more to do with the fleet size when compared to the peak vehicle requirement. The Hydrogen pump failing just add to it.
The only good thing (i suppose) is that reliability and availability of the Ex-Glasgow Enviro300s does seem to be better than the Streetlites they replaced.
Is simply continuing with usual unreliable fleet they’ve got.
The bendys and E500s have age against them and the E400s have always been a poor choice of vehicle in my opinion.
Volvo still provides the most robust and reliable vehicle on the bus market for the UK, body manufacturer aside.
Before Aberdeen had Yutongs there best vehicles were the B7RLE Eclipses.