Red Bull will bring a major update for their RB18 on the final day of pre-season testing, Sergio Perez has revealed.

While Mercedes made a major upgrade to their car yesterday, Red Bull’s car hasn’t seen such major changes.

Perez told the official F1 website that Red Bull’s development schedule is “everything as planned” and the team will have new parts on the car “tomorrow”.

“I think it’s all visually easy to spot,” he added. “You will see him tomorrow.

However, the team has no plans to duplicate Mercedes’ “zero sidepod” design. “No, we’re not going in that direction,” he said. “I think everything should be there tomorrow and we are able to make it work for the last day.”

“We have to focus on our business for now in this short testing period,” he added.

Team principal Christian Horner said the team’s priority was to prepare for the season-opening race, which takes place at the same track in a week’s time, when asked whether the RB18 will receive important updates during the rest of the test.

“Obviously we are preparing for the first race, so there will be some small pieces that will appear on the car as the week progresses,” he said. “But the focus is on next weekend.”

“It’s been a reasonable test so far today,” Horner said at lunchtime. “The morning session is quite tricky because the wind, the sand, the heat, it doesn’t have much to do with the conditions in which we will be racing next weekend.

“So there’s a lot of data collection going on, but it’s been very, very helpful and we’re racking up the laps and getting the data we need.”

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