The present disclosure relates to an electrically powered wheelchair comprising a chassis, a seat frame, a seat frame tilt and lift system having a lifting member arranged to provide translational movement of the seat frame relative to the chassis, and a first arm (11) which in cooperation with the lifting member is arranged to tilt the seat frame relative to the chassis, an armrest assembly (19) pivotally coupled to the seat frame, and an armrest adjustment arrangement (17) comprising: a first force transmitting arrangement (21) having four pivot points (21-1, 21-4) defining the vertices of a first parallelogram, which first force transmitting arrangement (21) is pivotally coupled to the first arm (11) via a first pivot point (21-1) of the four pivot points defining the vertices of the first parallelogram, and pivotally coupled to the lifting member via a second pivot point of the four pivot points defining the vertices of the first parallelogram, and a second force transmitting arrangement (23) having four pivot points (23-1, 23-2, 23-3, 23-4) defining the vertices of a second parallelogram, which second force transmitting arrangement (23) is pivotally coupled to the first force transmitting arrangement (21) via a first pivot point (23-1) of the four pivot points defining the vertices of the second parallelogram, which second force transmitting arrangement (23) is pivotally coupled to the seat frame via a second pivot point (23-2) of the four pivot points defining the vertices of the second parallelogram, and which second force transmitting arrangement (23) is pivotally coupled to the armrest assembly (19).
