XC70: the newer, the more regulated?

At some point I change my XC70/2010 (135’000km) against one with less km. If I look at the technical data on autoscout, it is noticeable: With the 205 hp engine 215 km/h Vmax are listed, (which is also my experience) with the 215 hp engine only 205 km/h. I only need the speed sometimes (far more important to me is the torque of the D5), but in the summer half year in good weather morning at five on empty highways – I already run the thing. nn this data? If yes, I wonder: Are the newer ones simply more regulated? (What can probably be improved with a chip tuning.) Or the stupid variant would be yes: the newer ones are shorter translated? Thank you very much for every kind of “response”.