An electric motor (1) includes a commutator (30) including commutator segments (31), a first conducting brush (41) and a second conducting brush (42) in contact with the commutator (30), and a first auxiliary brush (51) and a second auxiliary brush (52) in contact with the commutator (30). The first auxiliary brush (51) and the second auxiliary brush (52) are connected to each other via a diode (80). When the first conducting brush (41) separates from one of the commutator segments (31), the first auxiliary brush (51) comes into contact with two commutator segments (31) including the one of the commutator segments (31) and a commutator segment (31) behind the one of the commutator segments (31) in a direction of rotation. When the second conducting brush (42) separates from another commutator segment (31) (commutator segment (31) different from the one of commutator segments (31)), the second auxiliary brush (52) comes into contact with two commutator segments (31) including another commutator segment (31) and a commutator segment (31) behind another commutator segment (31) in the direction of rotation.