Red Bull and AlphaTauri have both had a strong start to the 2021 F1 season, with Max Verstappen looking a serious title contender this year in the RB16B.
The cars had improved substantially with upgrades towards the end of last season, but the Red Bulls seems to have knocked things up another gear for 2021.
Much of the praise for the performance has gone toward the new Honda power unit, and in a statement ahead of the Spanish Grand Prix this weekend, Honda F1 chief Toyoharu Tanabe has said both teams are performing at a higher level this season.
"From the first three races, it’s clear that both teams are performing at a higher level than last year and we will get a better understanding of how we can improve even more after a weekend and a race at this benchmark circuit and get important information on how to keep moving forward on the development front for future races," he said.
"In Portugal, we had a trouble free time on the PU front and it will be important to maintain that situation in this close fight for the championships.
"We have been working hard, studying data from the past at this venue as well as from the first three races of this year, to ensure we are as well prepared as possible, as well as looking at optimising energy management settings to suit each team and driver. We hope that the Spanish GP will see us make a step forward with both our teams."