(06 Apr 2025, 11:01 am)deanmachine wrote Either way, the B9s are nice buses with nice interiors and if they can keep on top of maintenance are perfectly suited to the Cobalts. What's the point in swapping them for buses that aren't even that much newer now. The Streetdecks are going to be 8 years old this year.

It's not the age but more so the fuel economy. GNE have previously tried (but failed) to improve fuel consumption on the Volvo B9TLs with GKN mods. 

If the StreetDeck can deliver a rumoured 9mpg as opposed to a rumoured 6mpg from the B9TL, that's quite a significant increase. Not forgetting some of the scheduled workings attached to 307 & 309 boards including the 353.

Obviously there's other valid arguments that the 51/52/93/94 might be better suited for StreetDecks. We don't have the access to the numbers that GNE do.