Can see it's been a while since this thread was last woken but having just taken my T6 on its first lengthy run I was watching the figures. Just driven from Peterborough to Sheffield & back, was on 37mpg average before I left & after roughly 280 mile round trip she's showing an average of 40.9mpg. Never been Sheffield before but as I hit the M18 the Ad Blue warning bells & whistles started shouting / flashing drowning out the SatNav & making me panic, thankfully got 650 mile range left so I'll put some in tomorrow before the start fail comes in to play.