I was amazed how good the economy was when driving back from (rainy) Newquay a few weeks ago on the m/way. Didn't work it out but yep, you should get 30mpg easy at 70 in 6th. Def a lot better than in my old GTV V6.
On the flip side, if you use the V6 like it should be used then you're gonna drop to low 20's easily...... !
Well ive taken the plunge..and quite frankly......I donbt give a s###e hoe much fuel it used its awesome..One the way back from buying it though I did stick in on cruse at 70 mph the clock was showing 35mpg not sure how accurate it is but since then its been bouncing off the red line and is averaging 18 mpg. Totally acceptable mpg in my opinion