[Tony500]

I would never go with the dash... But the only car to tell the truth is our 07 xc90. 20/21 mpg on the dash and when I calculated it when I done a fill up it's pretty accurate. That's us mostly town driving and heavy footed . As an example my V70 returns on average 35mpg on the dash and when I calculated from a fill up it's around 28mpg with the same driving conditions