Hello Titanmaster we live in the mountains and have bought the scooter for our 11 year old son. He weighs about 30 kg and the scooter runs quite well with him, even on steep inclines. However, when mum with her 50 kg wants to go up the same slopes, the scooter has too little power and she has to hitch a ride. So on the level it is suitable for an adult and on slopes it is great for a child. I hope I have helped with this answer.