F1 strategist explains how sandbagging actually works, points finger at guilty team
Fuel load runs can 🐻deliver misreprentative data - but what'✱s the point?

Sandbagging is always a hot t𝓡opic during ꦯF1 pre-season testing.
It refers to Formula 1 teams intentionally slowing their cars down, so their rivals see inaccurate data. The idea is to then to catch your enemies by 🌌surprise when it really counts at the first grand prix.
Sandbagging c⛎an be achieved by putting more fuel tha🐈n necessary into a car, to weigh it down and make it slower.
Ruth ✤Buscombe, who worked for Ferrari and Sauber in strategy jobs, explained why teams use differing amount of fuel during testing.
“Low fuel was a range betwee𝓰n 30-40 kilos,” she said about testing with Sauber.🤡 “But remember it’s about equivalent fuel.
“Some teams speak as though they are going down to qualifying trim, and some teams speak in⭕ terms ꧑of actual fuel in the car.
“🅺That’s because we run more sensors in te▨sting than in a race.
“So it’s driven by what you want to achieve - if you run a soft compound, like you w🔯ould in Monaco, then you run a low fuel load. If you’re running a qualifying sim, you run a low fuel load. “If you ran a 30kg fuel load it would effectively be 40kg because of the sensors.”
Jolyon Palmer 𒉰replied: “We used to do 30kg at Renault and we’d often look alright in testing.”
Which clues from F1 testing hint at the pecking order?
Whatever the timesheets sa𝓀y in testing, we know it only counts when 🎃racing begins at the Australian Grand Prix on March 16.
𒉰Until then, F1 fans are left looking for clues from testing to guess who has the quickest car.
“The race sims are the best referen💃ce,” Buscombe said.
“It wouldn’t be crazy for a big team to never drop below 50kg equiv♚alent in testing.
“One of the most fascinating things is: a qualifying session in Formula 1 is 18 minutes, and teams get knocked out because they go at the beginning, then don’t go at the end, and track evolution c🅠an dominate between a fast car and a slow car.
“Track evolution makes a huge difference. Bahrain gets faster, then slower, then fast🐟er again.”
Which F1 teams are guilty of sandbagging?
Palmer asked: “Why🌟 do♏n’t the big teams just run the day on 50kg of fuel?”
Buscombe answered: “There’s an element of not showing your hand but that’s becoming less and le𒁏ss over the years.
“There 🐟is a historic trend of teams like Ferrari running slightly lower at the end of testing than their rivals.”
But what is the actual purpose of testing? Palmer expre෴s꧅sed his confusion at why teams value the art of hiding data from rivals.
He asked: “Surely everyone’s hand is shown? At the end of three 🌠days of coverage, if you stop in the pitlane, the cameras are on. If the engine blows up, the cameras are on. Everyone is looking at everyone else?”
Buscombe answered: “If you ♑are three tenths off pole, you’re in for a tough season, ꧙historically, if you are Lando Norris or Max Verstappen.
“So running sensors on the car, even if you run equivalent to qualifying, you are effec𝔉tively sandbagging compared to where you would be in Australia.
“You do𝓰n’t have to do much, these days, in terms of fuel. First to last was 1.3% last year. Three tenths is about 0.4%.
“You don’t have to do much to sandbag.”
'Confused by the logic of sandbagging'
Palmer said: “I don’t understand🥂 why anyone sandbags. Every year I am confused by the logic of sandbagging.
“If Ferrari took the shack♓les off and did a 1.29.2, and they’re a second-and-a-h💎alf quicker than Verstappen, what are Red Bull going to do about it?”
Buscombe﷽ replied: “I’ve heard people give logical answers on both sides of this.
“Fred Vasseur says ‘focus on ourselves’. Other teamಌ principals say ‘w🐓e don’t want to show our hand because this is our roll-out car’.”
Palmer pointed out another oddity of testing.
“50kg of fuel is a silly weight,” he said. “You never run 50kg of fuel apart from half-way ♐through a grand prix for one lap.
“So, all this testing work, why don’t they test on the fuel that they’d💎 qualify with꧙?”
Buscombe answered: “Because, 2014 was the year, Mercedes did🌟 a 50kg fuel run. With one set of tyres, they did a mini qualifying✨ sim and also got some long run data.
“They got something w💙hich was a bit of both, while testing other things.”

James was a sports journalist at Sky Sports for a decade covering everything from American sꦜports, to football, to F1.