I wasn't going to reply to this thread because I thought that there was something different about how the seat belts work. I had an '07 G, 2nd generation. It wasn't a sport model, and didn't have a tech package. However, I never had a problem with the seat belts retracting automatically whenever I unhooked them, and they would lock up if they were pulled harder(which is what they were supposed to do). The only thing that seems different about the belts in the Q50 is that they seem to retract with a smoother motion. Other than that, what is the difference that you are seeing?