Abstract: An electric scooter (1) comprises a collapsible chassis (2), a pair of driven wheels (4) at the front of the chassis (2) and a pair of casters (5) at the rear. An upright column (6) is supported on the chassis (2) and a foldable seat (3) is supported on the column (6). The chassis (2) comprises a pair of cross-members that make up an X-frame, such that the chassis (2) may readily be folded. The back of the seat (3) may fold down onto the base of the seat and they may together be pivoted downwardly and rotated through 90°, so that they fall within the plan area of the folded chassis. The height of the seat (3) on the column (6) is adjustable, to facilitate transfer of a user to and from the seat (3). An electric wheelchair is also disclosed.