(17 Apr 2014, 8:00 am)Davey Bowyer wrote How are the Mercs doing on the WTX? They must be a massive improvement to the B10BLE's previously used.
I've only used the service once post-upgrade but the Merc I had performed marvellously. I see the arrivals and departures from Sunderland quite frequently and I think I can only recall one instance where the X7 did not arrive within the one minute early/five minutes late bracket.