Well the engine power is same as that of Mehran i.e. 796HP. But since Mehran has got a smaller body/weight, its pick is eventually better... On Islamabad highway, I easily touch 90 KM/h in 4th gear with 3000RPM. If the road is clear, I easily cross 100KP/h.
Recently, I drove it on M1 with average speed between 115-125 KP/h. I crossed 135KP/h several times and once I touched its top speed i.e. 140 KP/h but that was not easy. It took allot of time and slope on the way.