It amazes me how unreliable they are, considering the rest of the Desiros are some of, if not the most reliable trains on the whole network, being very well built. I think maintenance has a serious role to play, and I think it is thanks to operators like SWT/SWR with purpose built facilities run by Siemens like Northam that they achieve such good results. EMR is out of my knowledge and experience, but it makes me wonder what an earth has gone wrong with their maintenance for the reliability to have got this bad. IIRC they were not treated the best by GA in their final years there, but it still doesn't explain how EMR still haven't gotten to grips with the 360s, especially considering how solidly built they are.