Confused about the issues being debated? We attempt to answer the key points...
And what would that mean for the championship?Vettel would therefore only score four, rather than eight points, in the season finale, meaning Fernando Alonso would be reinstated as the 2012 World Champion by a single point.
What's Red Bull's response?The team are yet to comment..
And the FIA?According to Sky Sports F1's Ted Kravitz: "The FIA have just released a statement to journalists to say there is no case to answer, there was no passing under yellow flags in the first place. It was actually a trick of the TV screen. All the attention is on the light panels which are around the circuit and they supplement the marshals' flags that you get on any track.
"And if a marshal holds out a yellow flag, then you are not supposed to overtake and that is what people thought they were seeing. But actually the green light board was in the wrong place - there was a marshal flag before it saying that the danger zone had passed and we have had that confirmation from the FIA today. No infraction ever took place, they were satisfied at the time that Vettel did not overtake under yellow flags and as far as they are concerned it is case closed."
