Not many have NADs on here to compare with! Though with a 17 second 0-60 I'd be expecting at least 70mpg to make up for that. 
If you're after random comparisons though, my Vectra done 48mpg this week....with a turbo...a stuck EGR....and a 9 second 0-60...
And the HDi's I had last year averaged 50mpg.

If you're after random comparisons though, my Vectra done 48mpg this week....with a turbo...a stuck EGR....and a 9 second 0-60...
