But pretty reliably isn’t full reliability. And that’s only been the odd few units out of the 19 units ordered (the fact most haven’t completed their fault free running before storage in Long Marston isn’t a good sign either).
Luckily, as said elsewhere, binning off the 769s makes a significant dent in the savings GWR has been told it has to make, so at the risk of further cutbacks, I would rather see these binned off than GWR struggling to run a service with them on heavily cutback routes. Yes, decarbonisation still has to be a priority, but hopefully the focus can now be switched to quick electrification wins and potentially battery power instead.