Jul.20 (GMM) Jenson Button is hoping McLaren can end its performance slump at Hockenheim.
After a dismal outing for the British team at Silverstone recently, the 2009 world champion admitted the post-event debriefing at Woking would be "sombre".
"We didn't sit down and shout at each other," the Briton told reporters at Hockenheim.
"We looked at what we had failed to do and how we are going to make it right."
For the German Grand Prix, the MP4-27 will feature some upgrades that according to boss Martin Whitmarsh will be obvious to the naked eye.
"Some of the upgrades have been pushed through quicker," he added. "Also, some things we have found very late in the day have been very interesting."