Red Bull ended this year as the second best team but were still some way off Mercedes, who won 19 races to Red Bulls two.
"We've got closer in the second half of this year and managed to pick at the tail of Mercedes now and again. If we can get to a point where they're not dominating every Grand Prix weekend, I think that's only healthy for Formula One," Horner told RACER I'm pretty confident in the quality of drivers that we've got, that if we give them a car capable of getting among it they will do exactly that.
"I think just for Formula One and for fans of the sport, it will be great not to have a known winner on a Sunday afternoon bar reliability issues, so hopefully we can help to achieve that."
Bahrain International Circuit - Winter testing