The cost of the '17 WRCar's is a big issue. Even Citroen cant afford to run 3 cars without another sponsor.

Here's Ford Europe Gerrard Quinn on the M-Sport Ford situation:
"Cost was always going to be an issue with the modern WRC cars - the spectacle is great but when the cost is €300K to €400K more than the outgoing WRC car then it will become difficult to sustain particularly when cars are exclusive to WRC only."