First, measure the tightest places the scooter must pass through, such as internal doorways, storage spots, lifts and garden gates. Then compare those measurements with the listed overall width and folded dimensions, allowing room for comfortable movement rather than only the bare minimum.
Second, define the longest regular journey you expect to make and compare range, battery information and speed against that use. A scooter for moving between rooms, car parks and local shops does not need the same specification as one used for longer outdoor errands.
Third, check the practical ownership details: user weight capacity, tyre type, ground clearance, charging routine, portability, warranty information supplied by the retailer and whether replacement parts or accessories are available. Accessories for Electric Vehicles may also be relevant if you need storage, covers or visibility add-ons, but make sure anything you add is compatible with the scooter model.