It depends on the title and current plate. If you buy one used in Minnesota and it HAS a moped plate, it will keep that plate. If you buy one from another state and the titel indicates "moped", it will almost certainly be titled and plated as a moped in Minnesota when you transfer the ownership registration. In Minnesota, a scooter be 50cc or smaller, have two horsepower at the rear wheel, and not go faster than 30MPH on a level surface.