(19 May 2021, 7:54 pm)Adrian wrote I hadn't noticed the unreliability issues that you talk of, but given that Go North East are one of the most transparent operators as far as breakdowns etc are concerned, I managed to source some numbers from their Twitter feed.

Between 1st April - today, there have been a combined 34 breakdowns reported on the 10/10A/10B. 

• Service 10 = 12
  
• Service 10A = 13
  
• Service 10B = 9
  

Total = 34

Are these breakdowns mainly happening from 6043-48 or 6071-83?

If the former, then it's no surprise. Won't be the first example of particular problematic sub-fleets forming a PVR.

Take Arriva's X21/X22 Sapphires back in 2014:

- 7501-06 - Allegedly poorly looked after by Blyth and then Readar and hammered on the X93

- 7507-09 - Fine although not trouble free. Mainly used on the 'Express' and predecessors as well as 501/505/518

- 7522-28 - Brand new and absolutely fine