Well Sleepy, I wish I was fighting your case believe me, I have fought against Fords, Pugs Twice, Vaxhalls, got my facts well in advance right, put it to them in the most effective way & won, it was not the case of being a clever sod it was a case that their product was not suited for the purpose of it's intention, in your case your dash readings keep going off that in-turn could get you a speeding ticket, I do stand my ground but we are all different. Good Luck, but take heed of my Statement.