(10 Sep 2014, 7:55 am)AIG20 wrote I'm sure that all of the engines in that batch of ADL E400s are "Euro 4". So when they replace it they might as well put a "Euro 5", or even better a "Euro 6" engine in if they can - if those engines aren't too expensive.
to be honest I doubt they will invest to heavily in new buses or engines until the quality contract control debacle is sorted