Toro Rosso boss Franz Tost remains convinced that Renault eventually sort out its problems, after a string of failures for both of the Red Bull-backed teams.
Tost is of course still hoping that STR will become the de facto works Renault team at some stage in the future, if a deal can be concluded.
“For sure it doesn’t help,” he told this writer when asked about the reliability issues. “But all the parties try to do the best, and hopefully we will sort out these problems in a short period of time.
“We cannot change anything currently. We have to work together and get the most out of it. We have to work on this, and it doesn’t help if we talk now about it. I’m convinced that Renault will find a good solution.”
Tost admits he’s concerned about the looming threat of penalties: “I’m nervous about this, because we will face a lot of penalties, because we have already used two engines and two MGU-Hs and so on.”
Adam Cooper's F1 Blog 
Well there’s a switch, Franz Tost is sounding reasonable and Dietrich Mateschitz is the one issuing threats.