Volvo S60 D3 does not reach top speed

I’m driving a Volvo S60 D3 (163 hp), but instead of the specified 220 km/h, I’m running just 205, so about the top speed with which the current D3 with 136 hp is indicated. I’ve already driven an S60 D3 as a business car before, which has run without any problems 225km/h on the straight, even uphill it was at least 210-220. I’m sure that he would have run more than 225 if he hadn’t been locked off from the control unit. So have a direct comparison between the cars, the difference is that the business car of the 225 ran a model year 2012, already with Start Stop and the current one model year 2011 without Start Stop. The current one has only the driving assistance package to it. By now was already with 5 dealers and had contact with the Volvo Customer Care, which behaved from the customer care is indifferent to unscrupulously, I was always referred to the dealers. 3 dealers have more or less not interested in the problem, have pushed it to the performance dispersion or you don’t know what you should do there. One dealer has not told me the same thing about the odds, but I have asked me about the trouble.