Lewis Hamilton, Jenson Button, Mark Webber and Jaimie Alguersuari are under investigation following the Spanish Grand Prix, having failed to slow down for yellow flags.
The FIA made the announcement after the race, where Hamilton finished in second, Button in third, Webber in fourth and Alguersuari in 16th. Although the governing body did not specify at which point of the race they ignored the yellow flags, it is believed it happened when Lotus driver Heikki Kovalainen crashed out with 17 laps to go.
With 20-second penalties, however, the results for Hamilton, Button and Webber would stay unchanged.