Red Bull suspicions bring reminder of F1's biggest sandbagger

F1

The lack of obvious changes between the 2025 Red Bull and last year's F1 car has raised speculation that the team is sandbagging, and holding back radical parts. It's denied by the team, but wouldn't be the first time it has happened...

Red Bull RB21

Is Red Bull sandbagging?

Red Bull

The start of pre-season testing was the first opportunity to set eyes on the Red Bull’s 2025 car — or was it?

The team’s closest rivals arrived in Bahrain with cars that are noticeably different (to dedicated fans at least) to last year’s challengers. But in contrast, the RB21 looks remarkably similar to its predecessor, the RB20.

While there are subtle differences to the bodywork, the design of the Red Bull on track appears to have remained at a standstill in a world that is constantly moving forward.

Unsurprisingly, amid the speculative atmosphere of the F1 testing, suspicions have been raised that the team has a more extensive upgrade hidden away, ready to whip out and stun the paddock at the first race of the season in Australia.

So has Red Bull run out of ideas, or is it mounting an elaborate cover-up?

Red Bull 2025 F1 car

The RB21 — revealed in low lighting — to hide “subtle” differences

Red Bull

The answer to both questions appears to be no. When asked about the RB21’s supposed lack of development over the winter, Red Bull team boss Christian Horner was quick to fire back.

“Every surface on our car is different to last year, it just looks similar because it’s a similar philosophy,” he said during a press conference on the opening day of testing. “And you can see other cars have converged with that.

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“I think this car, whilst it doesn’t look a huge amount visibly different to last year’s car, is subtly different in many different areas, and particularly in the areas you can’t see.

“This season’s all going to be about evolution, it’s going to be about trying to get incremental bits of performance, and it’ll be a development race from Melbourne all the way to Abu Dhabi.”

The last section was quickly leapt upon, as some inferred that Red Bull could be planning on major changes for the Australian Grand Prix. However, Horner rebuffed the suggestion.

“It’s basically the car that will start the season,” he said. “There may be some subtle changes introduced between now and then but fundamentally it’s what we will be taking to Melbourne.”

It remains to be seen what these “subtle” changes will be and what effect they will have on the performance of the RB21 — which set the second-fastest time during the first morning of this year’s pre-season testing.

But it’s not unheard of for an F1 team to hold secret new design back until the opening round of the season with the hope of catching rivals off guard, and it’s common to underplay your performance. In recent years, we’ve seen it all from one of Red Bull’s long-term rivals.

Mercedes 2022

Mercedes’ radical zero sidepod design turned heads in testing

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Mercedes has been renowned as the “Master of Sandbagging” since the early 2010s, as it regularly hoodwinked the rest of the grid, giving them false hope by running below its cars’ maximum pace in testing or by adding late upgrades after initial sessions.

While most teams are cagey about their true pace, Mercedes appeared actively in denial as it appeared mediocre in the testing time-sheets, then blew the field away as the competitive action began. Its cars ran almost six-tenths behind Ferrari during testing in 2017 — supposedly because of the T-Wing it had added to the back of its car. Yet at the first race of the season, Hamilton qualified on pole by almost three-tenths.

But its peak came in 2022 — the first year of the current set of technical regulations — when the team arrived at the first pre-season test in Barcelona, a month before the first race of the season. Its new W13 featured wide sidepods, similar to those on the rest of the grid and the new design appeared effective, as Lewis Hamilton and George Russell topped the timesheets on the final day — lapping almost 0.5sec quicker than anyone else.

But at the second pre-season test in Bahrain, just a week before the season opening race, the W13 rolled out onto the circuit seemingly stripped of those sidepods. By the time rivals had time to scrutinise, evaluate and imitate the design, the season would be well underway.

It was a brilliant deceit except for one problem: the ‘size-zero’ design proved uncompetitive and led to numerous mechanical issues as well as porpoising, despite the promising data that had been obtained from simulations.

Hiding innovations is more difficult than ever given how closely watched every session is. In 2020, a keen eye on a cockpit camera uncovered Mercedes’ DAS system during pre-season testing in Spain, which gave its drivers the ability to change the alignment of the front tyres. This could be used to generate extra heat ahead of a qualifying lap or ease wear at high speed on straights and was used occasionally during the season when Lewis Hamilton and Valtteri Bottas went on to win all but four of the season’s 17 races.

The Brackley team had a reputation for sandbagging even before it was known as Mercedes.

Jenson Button Brawn 2009 Barcelona testing

Button in the Brawn 001 – which stunned on initial test

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In 2009, Brawn GP had reason to be quietly confident after computer simulations over the winter revealed some highly positive results being yielded from an innovative double diffuser design. So on the first day of pre-season testing in Barcelona, the Brawn GP 001 was deliberately run slowly to avoid the scrutiny of rivals — and a potential challenge to its innovative double diffuser.

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On day two the leash was loosened. Despite Jenson Button and Rubens Barrichello running with high fuel loads and ballast to mask the car’s outrageous pace, Brawn quickly rose to the front of the field while lapping over a second clear of everyone else. Their real advantage would only become clear at the start of the season when Brawn had enough of a headstart to claim the drivers’ and constructors’ world championships, before the team was sold to Mercedes.

Rivals aren’t immune to sandbagging either: in 2013, Red Bull lapped two seconds off the pace on the final day of testing in Jerez, yet went on to win 13 races across the season and claimed both world titles.

But over the years, usefulness of sandbagging has lessened: modern cars are designed around one concept, where the front wing, sidepods, floor and rear work in unison to channel air for maximum downforce and least drag: simply bolting on a part that you’ve copied from a faster team is no guarantee of success.

So any advantage Red Bull might gain from hiding a major design change for another fortnight would be limited, while also bringing the significant downside that the team wouldn’t be able to make sure it works as expected in testing.

If Red Bull has fooled us all, it would be an immense gamble.