Yeah, logic dictates there's got to be some truth in this, although many operators may choose to base a part of their maintenance/ inspection periods on a mileage element, rather than just a straightforward 'standard' max 21 days.

Using this sort of observation, and whilst not as pronounced, stagecoach's branded 100 and x34 buses must have a similar situation, given their high mph sections? Will be interesting to see whether the cascaded Tayside e400 ultimately head to the x34 to displace its current stock, or if they are utilised elsewhere in the fleet.