Formula One's top teams could lose tens of millions of dollars in payments after Bernie Ecclestone revealed he plans to scrap the sport's current bonus scheme.
Teams such as Red Bull, Ferrari, McLaren and Mercedes have historically been paid more than others in the paddock in a system intended to keep them locked into the series.
But the payments have led to claims from smaller teams they are disadvantaged as the likes of Red Bull have seen their payments boosted after winning four consecutive titles between 2010 and 2013.
Ferrari have received special bonus payments as the only team to remain in F1 since the world championship began in 1950.
The first opportunity to change the payments will come in 2020 when the current commercial deal between the teams and the sport's rights holders comes to an end.