Bus Engines Starting Up 4

I tried to have a lot more variety in this one, and so there are many bus types featured here which have not been seen in previous instalments. There is still a smattering of B7TLs; skip through them if you like, although I would encourage you not to skip the one at 4:10 because it goes a bit wrong...
Includes buses of type Alexander Dennis Dart SLF, Alexander Dennis Enviro200 MMC, Alexander Dennis Enviro400 MMC, Mercedes-Benz Citaro, Mercedes-Benz Vario, Optare Solo, Scania K114EB, TransBus Dart SLF, TransBus Trident, Volvo B7RLE, Volvo B7TL, Volvo B9R, and Volvo B11RT.
Part 3: • Even More Bus Engines ...
Part 5: • Bus Engines Starting Up 5
I hope you all enjoy the video!

[@SM8150-AC]

Him at 4:11 was me when i am sick 💀😂

[@alexei123__2]

That B7TL at 4:11 really was suffering with buffering...

[@VascoRoblox-yp5rw]

SV55 CCF was a really funny! 🤣🤣🤣

[@neilburns8869]

Wouldn't really like to say how many of these vehicles should still be on the road. But Stagecoach used to have a policy where they wouldn't really keep any vehicle 15 years or more. However I don't really think that they could afford to keep that policy in more recent years with the state of the economy as it is.

[@Graeme-C]

at the depot i work at with first we have Gemini`s that are 16 years old with 800.000+ miles on the clock but even those have seen better days and are being maintained to keep them running and no more

[@busandtrainboy1747]

Right that’s a Gemini screwed up.

[@ThingsWithEngines]

It’s since been fettled with and now runs nicely again, thankfully!

[@VascoRoblox-yp5rw]

What was up with the Volvo at 4:11?