Red Bull chief Helmut Marko believes Honda will start delivering a competitive power unit much sooner than the rest of the paddock expects.
After three years of supplying unreliable and uncompetitive engines to McLaren, Honda will start a new relationship with Red Bull junior team Toro Rosso next year.
The deal has been struck with the possibility of Red Bull switching to Honda power when its existing Renault contract expires at the end of 2018, and Marko is confident the Japanese manufacturer will start making progress next year.
"We are very happy with the Toro Rosso and Honda cooperation," he told Formula One's official website.