Red Bull team principal Christian Horner has promised that his squad won't surrender their titles meekly despite their current struggles.
The defending Champions have made a poor start to 2014 with Sebastian Vettel and Daniel Ricciardo yet to taste victory while the team are already 97 points behind leaders Mercedes.
Red Bull, though, have the resources to bounce back and Horner says they will go all out to make up the ground to Mercedes.
"We've got to if we're going to make a Championship of it. We've got to take the fight to them," he told Sky Sports F1.
"We're going to give it everything. I believe we can take the fight to them, we just can't concede too much more ground.
"We were 22kph slower on that kilometre straight [in China], that represented almost 100 metres that we were giving away on the straight.
"That's where we've got to improve - it's quite simple. We know where we've got to fix our issues and hopefully there are some steps towards that in Barcelona."