World Championship Grand Prix 1906-1949

1907 9.4 mpg fuel consumption limit

1908 1100 Kg minimum weight. Cylinder bore limited to 155mm for 4-cylinder engines and 127mm for 6 cylinder engines

1909-11 No Grand Prix Racing

1912 1750 mm minimum width

1913 800 Kg minimum weight. 1100 Kg maximum weight. 14 mpg fuel consumption limit

1914 4500cc maximum engine capacity. 1100 Kg maximum weight

1915-20 No Grand Prix Racing

1921 3000cc maximum engine capacity. 800 Kg minimum weight

1922-24 2000cc maximum engine capacity. 650 Kg minimum weight

1925 Engine capacity and minimum weight unchanged. Riding mechanics banned but cars still required to have two seats. First World Championship of Grand Prix racing held as a manufacturers' title, with Indy 500 and national GPs as qualifying rounds

1926 1500cc maximum engine capacity. 600 Kg minimum weight

1927 Engine capacity unchanged. 700 Kg minimum weight. Two seats no longer required.

1928 550 Kg minimum weight, 750 Kg maximum

1929 900 Kg minimum weight, commercial fuel stipulated

1930 1100cc minimum engine capacity. 900 Kg minimum weight. 30% Benzole fuel allowed

1931-33 No engine or weight restrictions

1934-37 750 Kg minimum weight

1935 German national authority instigated a European Drivers Championship, where finishing position determining points, lowest total being declared the winner. However, this would lead to Hermann Mueller of Auto Union being champion in 1939, rather than Hermann Lang

1938-39 4500cc for normally aspirated and 3000cc supercharged maximum engine capacity. 400-850 Kg minimum weight depending on engine size

1945-46 No standardised rules

1947-53 The first Formula One. 4500cc normally aspirated and 1500cc supercharged maximum engine capacity.