Red Bull couldn't ask for a more suitable venue to underline its return to winning ways in Formula One.

On the team's home track, Daniel Ricciardo and Sebastian Vettel want to prove that finishing 1-3 in the Canadian Grand Prix this month while ending Mercedes' six-race winning streak wasn't a one-off.

Still, even Red Bull thinks Mercedes will start as favorite again as F1 returns to Austria this week for the first time in 11 years.

Four-time champion Vettel says "everything else would surprise me," adding his team's goal is to come as close as possible to their dominant rivals. "If a chance comes up like in Canada, we want to be right there to take it."

Ricciardo admits "the gap is still big."