Such is Mercedes' advantage out on track that Christian Horner says it is "possible" for the Brackley team to whitewash the season.
Lewis Hamilton and Nico Rosberg have been in complete control this season, winning all five of the opening races.
Claiming a fourth 1-2 of the Championship in Spain on Sunday, Mercedes extended their lead in the Constructors' Championship to 113 points over Red Bull.
Red Bull drivers Daniel Ricciardo and Sebastian Vettel were third and fourth on the day, 48 and 76 seconds down the road respectively.
And although Horner reckons Ricciardo's deficit to the Mercedes drivers was not an accurate picture, he acknowledges the Brackley team's advantage.
"Mercedes have got themselves into a dominant position," the Red Bull boss explained to The Telegraph.
"We have a choice: we either pack up and go home or we fight.
"We have made small inroads and we are determined to keep pushing, but obviously maximum points every weekend is putting them in a very strong position.
"The 48-second gap is a little artificial because we lost a lot of time behind Williams and it is about managing tyres to the end of the race. When we had clear air, we definitely moved closer."
But no matter what Red Bull does, Horner fears such is Mercedes' advantage that they could win all 19 grands prix.
"It is possible but improbable that Mercedes would win all 19 races this year.
"They have a good engine-car-driver combination at the moment but things can change. We won the last nine races of last year and things changed very quickly."
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