Mercedes Executive Director Toto Wolff has warned that it is only a matter of time before Red Bull found a solution to the problems they had during last month's test in Jerez.
The reigning Constructors' Champions had a torrid time at the Andalucian circuit, completing only 21 laps over the four days of testing.
Wolff, however, played down suggestions that Red Bull would struggle to adapt to the new engine regulations.
"It's not good for Formula 1 that a manufacturer is in trouble, but I am sure that they will come back strongly - hopefully a bit less than before," Wolff told The Mirror.
"First, they have an outstanding driver (in Sebastian Vettel)," he said.
"Secondly, they have put together a group of people that work very well. Thirdly, they have the resources from the parent company.
"So there's no reason that Red Bull will not once again be the benchmark."