stevieinselby
Established Member
I would be very surprised by that, 220–273 were registered in 2016 and 2017, and Euro VI was the required standard for new buses at the time.Also believe the Mercs are Euro 6 for the previously proposed Clean Air Zone, the Cummins are Euro 5.
Especially as that batch included the Flyer buses that were running to Leeds and Bradford city centres.