Coming home from Reno NV, I hit 146-7ish so I don't know what the actual limiter is set at, but I can tell you that it is a governer cause the car still had more ummph left. I was at like 4.5k on the tach. The good news is that the car felt pretty stable at that speed. Unlike my old Stang GT that felt like it was flying thru the air, very light in the front end, this car felt hunkered down.