I suspect so but that's all the more infuriating given both Greater Anglia and EMR are both owned by Abellio.
EMR have had the units for near enough 2 years, yet their priority is rebranding the exterior of a few.
Any reasonable operator would prioritise a heavy overhaul preferably undertaken by Siemens. Instead it appears these clapped out units continually fail and minimal maintenance is underway at Bedford Cauldwell. EMR were using the excuse of COVID but even that won't wash now.
One does wonder if there’s simply too much outstabling. The way things are organised means units barely see Cauldwell, let alone Northampton.
They have made use of a legacy depot which was designed for a completely different purpose, and it doesn’t really fit a service where nothing starts or finishes at Bedford.
Then you also have the issue that units aren’t going to depot during the midday, so another maintenance opportunity unavailable (the full 12-car service may actually help, providing units can see Cauldwell between the peaks, rather than just going to Cricklewood).
In a joined-up world one might run a couple of early morning Thameslink services out of Cauldwell and into St Pancras High Level with 360 pairs on them, and something similar in reverse in the evening. This would allow a few more units to see the depot each day, without incurring massive ECS mileage.
The other problem is with it being a simple end-to-end service, there’s little opportunity to swap units onto depot paths where required, though as things stand there’s barely any depot paths anyway. So any unit which needs to see a depot is a headache deciding what to do with it, and that is bound to introduce unreliability - especially if with current crew availability there aren’t spare drivers sitting around ready to move units ECS to/from depot.
In short, they seem to have designed a setup which works fine on paper, but which isn’t coping with the realities of a railway. I’m not sure the 360s themselves are the whole problem.
Ideally a depot at Cricklewood would have been a solution, but there may well not be the land available there now. The old EMU depot has recently been demolished I believe. The Kettering site is likewise rather cramped.