I've noticed with my R/T that I have to shift to third right at about 60mph. I would have liked to see it go higher but... I am quite sure that 6.2 seconds is too slow. My car feels much faster than that. I couldn't tell you any times because I don't go to drag ways or have anything to base my times off, but 6.2... my Crossfire did about 6.2 and my R/T would leave that in the dust any day.