Formula Two, abbreviated to F2, was a type of open wheel formula racing first codified in 1948. It was replaced in 1985 by Formula 3000, but revived by the FIA from 2009–2012 in the form of the FIA Formula Two Championship.
The goal of the 2009 revival was to develop a low-cost series to allow young drivers a chance to compete in the highest tiers of motorsport. In December 2012, series promoter MSV announced that Formula Two would not take place after 2013 due to declining entrant numbers, and the series was disbanded.
A third attempt at establishing the series was announced in 2015.
Formula 2 returned in 2017, the former GP2 series became 'FIA Formula 2' in the March leading up to the 2017 season.
While Formula One has generally been regarded as the pinnacle of open-wheeled auto racing, the high-performance nature of the cars and the expense involved in the series has always meant a need for a path to reach this peak. For much of the history of Formula One, Formula Two has represented the penultimate step on the motorsport ladder.
Prior to the Second World War, there usually existed a division of racing for cars smaller and less powerful than Grand Prix racers. This category was usually called voiturette ("small car") racing and provided a means for amateur or less experienced drivers and smaller marques to prove themselves. By the outbreak of war, the rules for voiturette racing permitted 1.5 L supercharged engines; Grand Prix cars were permitted 3.0 L supercharged or 4.5 L naturally aspirated.
In 1946, the 3.0 L supercharged rules were abandoned and Formulae A and B (later 1 and 2) introduced. Formula A permitted the old 4.5 L naturally aspirated cars, but as the 3.0 L supercharged cars were more than a match for these (and the pre-War German and Italian cars were no longer available), the old 1.5 L voiturette formula replaced 3.0 L supercharged cars in an attempt to equalise performance.