A vehicle drive axle arrangement comprises an electric drive motor (1, 3), a left shaft (20) and a right shaft (23), coaxial with each other, in drive connection with the motor (1, 3), and intended for connection to respective driving half-axles of the vehicle in which the arrangement can be mounted, and a differential mechanism (6-19). The electric drive motor (1, 3) is coaxial with and arranged around the left shaft (20, 23), and the differential mechanism (6-19)—receiving rotary motion from the electric motor (1, 3)—comprises a reduction gearing (6, 7, 12, 13) and a planetary gearing (13-9), operatively connecting the two shafts (20-23).