1931 season statistics:

Drivers with the most wins:

1.  Rudolf Caracciola (8)

2.  Achille Varzi (4)

3.  Philippe Étancelin (4)

4.  Tazio Nuvolari (3)

5.  Louis Chiron (3)

6.  Ernesto Maserati (2)

7.  Marcel Lehoux (2)

8.  Fréderic Toselli (2)

9.  Giuseppe Campari (2)

10.  William Grover-Williams (2)

Full list of winners

Nations with the most wins:

1.  France (18)

2.  Italy (14)

3.  United Kingdom (11)

4.  Germany (11)

5.  Monaco (3)

6.  Finland (1)

7.  Poland (1)

8.  Belgium (1)

9.  Chile (1)

10.  Russia (in exile) (1)

Full list of winners

Constructors with the most wins:

1.  Bugatti (23)

2.  Mercedes-Benz (10)

3.  Alfa Romeo (8)

4.  Maserati (5)

5.  Amilcar (3)

6.  Rudge (2)

7.  Auburn (1)

8.  BNC (1)

9.  Nacional Pescara (1)

10.  Norton (1)

Full list of winners