alot of my friends asked me about the top speed for my honda (civic2009) ............yesterday i went to sokhna i was alone so i thought about trying to reach the highest speed.............224 km/h............thats what i reached........and i think it can be more than this.....i think the top speed is 230km/h.......i cant say anything about stability because it was a straight way.........plz dont try to reach this speed iam so lucky that nothing happend to me........and by the way dont belive any one when he say that he excceded the 230km............thats my opinion from what i did yesterday:D:D:D