Renault have declined to comment on plans around teams to whom they will supply power units to in 2017. Power unit manufacturers were required to supply the FIA with a list of works and customer teams for the 2017 season by May 15th (the Spanish Grand Prix) So far Honda and Mercedes have confirmed no change in team supply, leaving Renault and Ferrari to confirm plans.
Renault’s reluctance to share information on power unit supply suggests a change in team allocation is to be expected. With the 2016 spec power unit a significant step forward for the manufacturer and further gains being seen as the manufacturer develops the unit, it can be expected customer teams may have approached the French manufacturer.
It is highly likely Red Bull Racing will continue ‘white label’ PU supply agreement, with Scuderia Toro Rosso the most likely team to switch back to Renault to ensure 2017 technology. Sauber and Haas are the other Ferrari customers, Haas have a long-term partnership with Ferrari with no change expected. Sauber whilst long standing customers of the Scuderia may consider a change if the Renault PU is more affordable.