Thank you very much for all your correspondence, I checked for miles or Kilometres, you were correct it was Kilometers, went back to garage and said to them as they put kilometre reading in miles on the MOT, they reset it to miles and now are going to inform DVLA about the error, I also am going to write to DVLA as it's on my MOT I'd done 34000 miles more than I had, was convinced the odometer was faulty, what an idiot I feel, now back to miles now, Thank you so much for your help much appreciated.