(10 May 2014, 7:17 pm)Dan wrote Despite the chances of GNE ordering ADL products being rather slim, service X1 is more demanding than service 27... Would keep the Volvo B9TLs on there for that reason alone.

I would say that the 6.7l is actually an OK engine as long as it's built well and the bodywork doesn't weigh a tonne. The bodywork on the new E400 is lighter and despite the engine not beinng fantastic, if built and fitted well, it will do alright and last a while. The Pulsar Gemini 2 is lightweight and VDL / Wrightbus built the engine well into the Chassis. Hopefully, both the first (lighter body) and latter (well built with ADL looking to improve reliability) points will apply. The DB300's on the X10 and X11 aren't fantastic but they cope alright due to the light body and the engine being well built into the chassis. The same will apply for the new E400 with the recent improvements and I can safely say that it should be able to cope with interurban routes like the X21, X22 and GNE's X1. I'd definitely say though that the new E400 knocks socks off Volvo's and Wrightbus' offering for Euro 6. The B9TL is slightly more powerful but where reliability is concerned, there shouldn't be too much difference for anything upto interurban route types if the E400 is well looked after.