Ferrari's Charles Leclerc faces disqualification from the Abu Dhabi Grand Prix over a pre-race fuel issue which has been referred to the stewards.
FIA technical delegate Jo Bauer reported ahead of the race that the declared level of fuel in Leclerc's car is "significantly different" to what the team has declared.
Bauer has referred the matter to the stewards who have chosen to investigate after the race, but speaking on the grid, Red Bull team boss Christian Horner said he expected it would result in Leclerc's disqualification.
"I've just seen the statement. I think the interesting thing about it is the word significant they've put in there, there's a significant difference. The technical regulations are black and white. Usually with a case like that, it's either legal or it isn't," he said.
Asked if that would mean disqualification, Horner added: "I can't see how he won't be."
It centres around a new rule for 2019 which requires each team to declare its fuel level two hours before the start of the race. The stewards then randomly weigh the cars to confirm the amounts.
Leclerc is due to start the race from third behind Max Verstappen and Lewis Hamilton.
