Ross Brawn says improving Mercedes' race performances not yet where they need to be

Ross Brawn has stressed that Mercedes are 'not there yet' despite starting to see the first fruits of the restructuring process they went through last season.

Nonetheless the team's 64-point haul from the opening quartet of races is little under halfway towards the total they achieved during the whole 20-race calendar last year, and in stark contrast to the single points finish Rosberg and then team-mate Michael Schumacher claimed in the closing six rounds of 2012. Brawn says the 'pain' the team took in restructuring their aerodynamic department mid-way through last year is now starting to pay dividends. "From an engineering perspective, we know what we did 12 months ago is now coming through and giving us a reward," he explained. "Changes were made back then which were painful at the time, and were part of the reason why we had a poor second half to last season. You have the pain for a while of those changes, which is what we had last year. "We've now a very motivated group of people, and we're starting to put the things in place they need. When you do that the end result is you make progress. "On the sporting side, we've two great drivers, and people I've worked with for a long time in the team. I know how they work, they know how I work. "You can always look to add to it and tune it to improve, but you mustn't damage what you already have."