They are as reliable as it says on the TIN
As this column has been saying for years, nothing works out of the box. But with new trains entering service in large numbers, how soon the manufacturers can get them working something like as advertised is going to be critical over the next couple of years.
So here is a new feature, tracking how well the new fleets are doing. And remember that a Technical Incident (TIN) is reported after a train has been stopped for three minutes. Fleets are ranked by their miles per TIN performance during the period, not on MTIN moving annual average
NEW TRAIN PERFORMANCE IN PERIOD 9, 2017-18