F1’s new Overtake Mode changes the fight up the hill at Interlagos. Both cars can use Straight Mode, but the driver behind may have more electrical power to spend — if they have earned it.
The move into Turn 1 starts long before the braking boards. Get a poor exit from Junção and the car ahead is already pulling away up the hill. Get a good one and the slipstream can put you alongside before the Senna S.
In 2026, there is another part to that calculation. DRS has gone, replaced by an electrical overtaking aid. Drivers also have Boost and adjustable front and rear wings. They are separate systems, and confusing them makes it harder to understand what is happening when two cars go wheel to wheel.
At Interlagos, where a move into Turn 1 can be answered almost immediately on the run to Turn 4, the timing of that electrical deployment could be every bit as important as the speed at the end of the straight.
Overtake Mode: the one-second gap still matters
The old one-second threshold has survived, but it no longer opens a rear wing. Under Formula 1’s 2026 rules, a driver within one second of the car ahead at the detection point qualifies for Overtake Mode on the following lap.
That gives the chasing car an additional electrical deployment profile and permission to recover up to 0.5 megajoules more energy. It can then use that advantage where it is most useful, rather than being confined to one short DRS section.
The extra recovery allowance is not free charge. The car still has to harvest the energy. Nor does being within a second guarantee a pass: a weak exit, traffic or a nearly empty battery can wipe out the benefit.
The official Interlagos circuit guide puts detection just after Turn 12, Junção, and activation after Turn 13. That makes the slow corner at the foot of the climb unusually important. Fall outside the gap there and the attack may be over before it begins.
Straight Mode helps the defender too
Straight Mode is not a new name for DRS. When permitted in the designated zones, both drivers can switch adjustable front and rear wing elements to a lower-drag setting. The wings return to their higher-downforce Corner Mode configuration for braking and turning.
São Paulo has two Straight Mode zones: one from after Turn 14 towards Turn 1, and another from Turn 3 towards Turn 4. The defending driver does not need to be within a second of anybody to use them.
So two cars side by side on the main straight can both be running with reduced drag. What may separate them is the chaser’s Overtake Mode advantage, their battery charge and how much Boost each driver is prepared to use.
Turn 1 can punish the driver who gets carried away. The track drops away into the Senna S, and a late-braking move that runs wide can leave the attacker badly placed for Turn 2 and the exit towards Curva do Sol.
Boost and Recharge: spend it now or save it for Turn 4?
Boost is the driver-operated electrical deployment control. It can help a driver attack or defend anywhere on the lap, provided the stored energy and the permitted power profile allow it. Unlike Overtake Mode, it is not unlocked by following another car.
The FIA tightened the rules after the opening races. Under its April 2026 refinements, race Boost is limited to +150kW, or the car’s current power level at activation if higher. MGU-K deployment remains at up to 350kW in key acceleration zones, but is limited to 250kW elsewhere.
Recharge is how the battery gets some of that energy back. Cars recover power under braking, on a partial throttle and when a driver lifts early. They can also harvest while flat out through super clipping, depending on the mapping and circuit limits.
Most of that happens through pre-set control strategies. Drivers can influence it, especially by lifting, but there is a cost: lift-off regeneration closes the active-aero devices, whereas super clipping can take place while Straight Mode is still open.
Interlagos offers serious braking into Turns 1 and 4, with two long accelerations where the driver wants the energy back again. Empty the battery defending Turn 1 and the same rival could be close enough to have another go at Turn 4.
The Senna S can undo a move in seconds
A pass into the first corner looks decisive until the cars reach the second. Go too deep on the inside at Turn 1 and the line through the Senna S suffers. The other driver may get a cleaner run through Curva do Sol and close up before the next braking zone.
That leaves a real choice. Does the attacker use the available deployment to finish the first move, or hold enough back for the second straight? A defender has the same dilemma in reverse: spend energy keeping the position now, or accept a compromised entry and try to fight back.
This is where the 2026 system could produce a different kind of battle, with passes set up across more than one corner. The wider competitive picture is in our São Paulo Grand Prix preview, but no particular team has been shown to have the better Interlagos deployment strategy yet.
Will the battery really decide the race?
Not every lap will be a fight to keep the battery alive. Williams’ pre-race technical briefing puts Interlagos towards the lower end of the season for energy sensitivity. The challenge may be less about simply surviving the lap and more about having enough stored charge at the precise moment a passing chance appears.
Traction matters just as much. A driver who cannot stay close through the infield will not earn Overtake Mode at all. Tyre grip plays a part in that, although the compounds, fresh asphalt and pit-stop options are covered in our separate São Paulo tyre-strategy analysis.
Rain could change the picture again. The FIA’s 2026 regulations updates allow Overtake Mode to be disabled when grip is low and visibility poor. Straight Mode may also be restricted. A dry-weather advantage should not be treated as guaranteed for Sunday.
Friday practice begins at 15:30 GMT. Only actual running and comparable session data can show which teams have found the strongest deployment settings here; the rules alone cannot tell us who will be quickest.
Tech Torque Verdict
Interlagos still rewards the basics: a clean exit from Junção, a tow up the hill and a properly judged braking move into Turn 1. Overtake Mode gives the following driver another weapon. It does not make up for a poor corner exit or a flat battery.
The better fight may come after the first attempted pass. If the attacker spends too much on the main straight, the defender could get another chance into Turn 4. That is what makes the new system worth watching at São Paulo — not a headline top-speed number, but how the drivers use the power over a whole sequence of corners.
