rufus_mcdufus
Champion Elect
It is still 1.7s slower than Rosberg on the same tyres though.
Yes 1.7s is light years in F1 but to go from 5 or 6 seconds off the pace last year to 1.7 is a massive gain. They only had three days on track in the first test so this is only their fourth day with a new car and new engine. Their aero package is unique in many ways and hard to copy and most insiders believe it will have many advantages, they also have a very significant engine development program in place. There's an awful lot to come from McLaren this season. I haven't suggested they'll beat Mercedes but out of the rest Mercedes will be watching McLaren like a Hawke, at a guess I wouldn't be surprised if they end up being more concerned about McLaren than they are about Ferrari. 
Fair comment teabag, Alonso has said he expects podiums but they will take a while. I still think they'll come sooner rather than later. It will be interesting to see how Jenson goes on the second day.Not sure we can conclude that 3rd place today will translate to the 3rd row of the grid just yet. Certainly it is more encouraging than anything yet seen.
This quote from Matt Morris, McLarens director of engineering. "We haven't turned our attention to outright performance yet".
To me that indicates there was more performance available when they set their lap, 1.7s behind Rosberg, others may read it differently.
They evidently spent a big part of the day evaluating power unit functionality. Not sure what that means but I do know it refers in part to reliability checks.