The German suffered a permanent loss of MGU-K on lap 37, which caused him to experience brake issues and a loss of power on the straights.
He had looked set to take the win – particularly after his team-mate’s retirement due to an almost identical issue – but dropped to second behind first Daniel Ricciardo in the closing stages.
When asked on Thursday if he is confident the issue is now resolved, the German replied: “It is a work in progress.
“Yes, they understand it. Yes, they are working on it to try to resolve the problem but we are confident that it will not happen here.
“Also, in terms of brakes, that was a special case in Canada, that it was on the limit and was always going to be on the limit. So that will be fine for here.”
He added that Mercedes will not need to take a more conservative approach due to the problems experienced in Canada over the Austrian Grand Prix weekend.
Rosberg has previous experience racing at the Red Bull Ring in feeder series and is pleased F1 is returning to the venue. “I am very excited about driving here again; I drove here in 2003 and 2004,” he explained.
“Austria is always a great place to race and already, now, it is spectacular the amount of fans that are out there. I don’t think we have seen that recently on a Thursday, it is really, really impressive.
“So many people have come and it is great, I think it will be a full house this weekend. It is awesome that we are racing here again. The track is nice too. I think there is always very exciting racing here; it is a very short track.”
Image courtesy of Octane Photographic