Mondeo 2,2L TDCI no top speed

Hi, first hello. I’m new here and I’m curious what you say about it: I got a new Mondeo 2,2 TDCI station wagon in September 05. At first I was completely excited, because the car had a brutal drive. Was already impressed by my old TDI, but this was outstanding. Recently, however, it seems to me that there is not so much going on, since I am constantly driving around with 2 children and dog, but I also don’t call off permanent performance. So far the case has been 3 times (in the 5th gear at approx. 1500 rpm – everything is off and within half a second again), and then I don’t even get close to Vmax. The car is indicated with 218, with a lot of running I can only 205 on the speedometer. With Ford you don’t know anything about it and a mistake was not made either. The 2.2 TDCI of another workshop customer goes to Tacho after all 230. Maybe one of them knows what this could be?