I had mine done under warranty however I had only owned the car a matter of weeks and when it went the car was undrivable (red cog of death). They do the flywheel at the same time so if I had to guess maybe 3-5k
Mine went last year when the car had done 12k miles (all with me). There was no orange or red cog. I just started to flash the gear indicator when I tried to change up during heavy acceleration. It was fixed under warranty.