We were just really struggling for grip through the next sequence of corners, and especially where I ended up going off,  Latifi said. It's been a tricky corner all weekend for me, so dirty tyres, dirty air and I made a mistake. I wasn't aware of the situation of the race up until then.

The aerodynamic penalty of an airbox was too much for the cars of the era and the turbo engines would not be able to take advantage sufficiently anyway.