An electric motor (1) includes a rotor (20), a commutator (30), a first conducting brush (41), a second conducting brush (42), a first auxiliary brush (51), and a second auxiliary brush (52). The rotor (20) has a shaft (21). The commutator (30) is attached to the shaft (21). The first conducting brush (41) and the second conducting brush (42) are in contact with the commutator (30). The first auxiliary brush (51) and the second auxiliary brush (52) are in contact with the commutator (30). The commutator (30) includes commutator segments (31) provided in a circumferential direction of the shaft (21). The first auxiliary brush (51) is disposed so as to come into contact with a commutator segment (31) having the same electric potential as a commutator segment (31) just separated from the first conducting brush (41), among the commutator segments (31). The second auxiliary brush (52) is disposed so as to come into contact with a commutator segment (31) having the same electric potential as a commutator segment (31) just separated from the second conducting brush (42), among the commutator segments (31).