McLaren managing director Jonathan Neale says the team has fought back well in the F1 development race after admitting it had been left behind earlier in the season.
The Woking-based squad started the year well with victory in Australia but then failed to win again until Canada - with a run of below-par results in Bahrain, Spain and Monaco meaning it lost ground in the points race.
However, after further disappointments in Valencia and at Silverstone, McLaren rebounded to form in the two races prior to the summer break and Neale said it was an indication that the development work being carried out by the team was now coming to fruition.
"I think we were out-developed around Easter time by some of our competitors and I think we have out developed our competitors through June," he said. "July and August are still being played out so we will see. There is only a tenth or two separating the top ten cars over a lap, so it is still very marginal.
"It is exciting for the fans and spectators with many different drivers winning different races and different teams coming to the fore and disappearing again and we look forward to that.
"The last race in Hugary was obviously very pleasing. It was the 150th pole position for the team, which we are very proud of. Lewis showed good pace in Hungary. I think that the updates we brought to the car in Germany and Hungary have definitely restored a degree of competitiveness to us, but we can't take anything for granted.
"It was very pleasing to see Jenson in fourth place on the grid as well in Budapest. So we have reasons to believe that we are making progress but it was a very tight race and I think it will be in the next few races as well. This season will run long and hard for everyone.”
McLaren heads to Spa this weekend sitting second in the constructors' championship, with Lewis Hamilton and Jenson Button fourth and seventh in the drivers' standings.