To prevent a repeat of 2014, the FIA has included a safety net in the current Formula 1 power unit regulations: the Additional Design and Upgrade Opportunities, or ADUO.
The initial idea was to measure the pure output of the internal combustion engine every six races (1-6, 7-12, 13-18, and 19-24). Manufacturers that are between 2% and 4% down on the best ICE on the grid are granted one ...Keep reading

Source: Mercedes “disappointed” if ADUO affects F1 title fight: “No place for gamesmanship”