Red Bull drivers Sebastian Vettel and Mark Webber are not concerned by the pace of the updated McLaren at Hockenheim.
Jenson Button and Lewis Hamilton topped the first free practice session for McLaren on Friday ahead of the German Grand Prix, in what turned out to be the only dry running of the day.
While reigning world champion Vettel, who was 12th quickest, admitted that Red Bull was not capable of going that quickly during that session, he told reporters at Hockenheim that his team had no reason to panic.
"They looked very competitive this morning, no doubt," Vettel said of McLaren. "We couldn't go that pace, but we were not entirely happy this morning.
"It's a Friday, and it's difficult to draw conclusions. [McLaren] looked competitive at Silverstone on the Friday as well and then their weekend was not so good. We have to wait and see tomorrow."
Team-mate Webber added that the changeable conditions made Friday's running very hard to judge. The Australian was 20th in the dry morning session.
"We can't control the weather, and it's tricky for everyone to work out where to put your energy and set-up time," said the Australian. "When the track is moving around this much, every lap basically, the laptimes are all over the place and people are very inconsistent with their times.
"In the end, we did a lot of laps, and got everything we could have out of those sessions."