Pedro de la Rosa will start from the back of the grid for the Belgian Grand Prix after his Sauber team elected to bring his ninth engine into play.
The Spaniard suffered a spate of engine failures earlier this season and, having already used the final of his eight allocated power units at this weekend's Spa event, it was always likely that he would need another one at some point before the end of the season.
However, that change has come earlier than expected with Sauber replacing an engine following qualifying.
The move means that de la Rosa's eighth engine can only be used in practice sessions in future grands prix this season, apart from at the final round of the season in Abu Dhabi where it can be used in any session.
The 10-place drop on the grid will move de la Rosa down from 22nd to the final slot in 24th.