Sohnemann becomes 15 years old / Ask for a purchase recommendation

Hello to the round, now the son will soon be 15 years old, and the mofa exam is due. We would like to give him a scooter for his birthday and are not quite sure in which direction it should go. We would therefore be grateful for your tip. The following considerations should be taken into account: Are there clear “preferences” to a particular product or manufacturer taking into account the above points? Thank you in advance for your support. Greeting, Filou