I used to tow a small box trailer with 1.0l Kia Picanto with a factory fitted tow bar. It was limited to tow 750kg. A scooter only weighs around 100kg and the trailer about the same. I should think anything could tow a scooter. A chap I know tow’s a small box trailer with a Honda CB250.
Do you mean roof rack? That would usually be a max of 75kg-100kg?