Choose by how you play
The game materials identify three scooters: G2, G4 and G4 Ultra. The G2 is the free starter ride. The G4 is a faster upgrade available through the dealership or a cash crate, while the G4 Ultra is described as the top-speed model sold at the dealership.
Exact speed, acceleration, handling and prices are not published in a reliable stat table. Compare them in the current dealership and on the same road rather than relying on unverified numeric rankings.