Red Bull Racing raised a few eyebrows during free practice at the Belgian Grand Prix on Friday, being best of the rest behind Mercedes.
Daniel Ricciardo showed his victory last season was no fluke as he came third in both red-flag interrupted sessions, posting a time of 1:50.136 in his 33 laps.
And Daniil Kvyat, who picked up his first F1 podium last time out in Hungary, improved from sixth to fourth for a time of 1:50.399 having completed 18 laps in each 90-minute session.
Nico Rosberg topped the time sheets, despite a frightening accident at 200mph when the right rear Pirelli tyre on his Mercedes exploded.
Ricciardo believes the practice form may flatter Red Bull though, but hopes their form on Friday isn’t just a flash in the pan.
“Generally I think if we can stay third and fourth at this track it would be good,” said Ricciardo afterwards. “It will probably be closer tomorrow as the gap from behind will close up a lot more, but let’s wait and see.
“Hopefully we can maintain these positions for tomorrow. It would be good to find some more time on the Option tyre, so we’ll do our homework tonight, like every team will.”
During their dominant era, Red Bull were a class above the rest in the second, twisty section of the Spa-Francorchamps circuit.
But in 2015, Kvyat believes his team need to improve there before qualifying.
He said: “The conditions were pretty unusual for Spa today, with the hot weather and we had two good sessions.
“As a priority, we need to find some time in sector two. As always, we will do our homework tonight and try to improve the package we have for tomorrow, but the car felt good so far.”