Williams is expected to confirm soon that it will switch from Renault to Mercedes power for the start of the turbo era in 2014.
Niki Lauda has been telling people that the deal is done and the Austrian and other senior personnel were even spotted at the Williams motorhome today.
The arrangement is a no-brainer given that Mercedes motor sport boss Toto Wolff is also a shareholder in Williams.
It would mean that Mercedes will supply the works team, McLaren, Force India and Williams in 2014, before McLaren moves to Honda.
Speaking this afternoon Wolff would not admit that a deal has been done: “It’s clear that we are losing an engine customer in 2015, and for Mercedes it’s important to have a regular business case. So it is important to have at least three customers from 2015 onwards. This is why we are having certain discussions with teams, and Williams is one of them.”
Adam Cooper F1 
Fascinating, several teams have nailed their colours to the mast of the Mercedes turbo being the goods for 2014 and beyond. Will McLaren’s 2015 shift to Honda set them back for that season? The unknowns are intriguing.
It’s going to take more than a engine provider change to turn Williams around. Their post 2003 BMW record has been very mediocre, a decade of average performances from a giant of the 80’s and 90’s. it must be incredibly frustrating for Frank Williams, all of the resources and infrastructure exist in that factory and yet…….