Sepang Lessons: Red Bull's New Power Unit Opens a Cycle as Mercedes and McLaren Lose Themselves

The moment Max Verstappen crossed the line at Sepang, I did not look at the timing board. I watched car number 1 sweep past the water still pooled at the edge of the track, the trace of an afternoon in which the Malaysian sky had not yet decided whether it wanted rain or sun. That was Verstappen's 72nd career win, and more than that, the first victory for an entirely new engine manufacturer: RBPT, the Red Bull-Ford joint venture. At 26, sitting in Luzhniki and misreading Germany's formation, I learned that the feeling of a match always deceives the writer who rushes. "The defeat at Luzhniki taught me what victory will never admit." And at Sepang, what Red Bull's victory will not admit lies behind the floodlights: two teams that once defined the modern era are losing their way at the same time, while the organisers left a stain that is not small. The backdrop of this round is a freshly opened technical cycle. The 2026 regulations are called "complicated" by the people inside the sport, and when the rules change, the order on the track is usually shuffled in a way no data sheet can predict. I have watched many regulation resets across 19 years in this trade, from aerodynamic revolutions to engine-architecture changes, and the pattern repeats with great regularity: the team that clings to the old concept pays, and the team that dares to leap to a new one benefits for the first one or two seasons. The Sepang weekend produced three parallel stories. Red Bull brought its Azerbaijan upgrade — masked by the Baku street circuit because that venue demands low downforce — to a high-speed track and confirmed its true value. Mercedes arrived with the W17 package and an unclear direction. McLaren, a team that once had high-speed pace, let that pace "vanish" even after upgrading. And above it all, a brand-new engine manufacturer won on its debut. I do not believe in luck; I believe in numbers lined up straight. The problem with Sepang is that almost nobody produced a number — no lap time, no sector data, no top speed. Every statement was qualitative. That forced me to read the race like a chess game in which the players hide their cards. The core of the story lies in three technical decisions and one strategic decision. First, Red Bull's upgrade. When an aerodynamic package is designed for a low-downforce street circuit, its true benefit is hidden, like a sprinter forced to run a curve — you cannot see their top speed. Sepang, with its high-speed sweeps, unlocked that package. This is a sound aerodynamic argument, and Red Bull confirmed it with the result. Second, Mercedes' upgrade. This is the most substantive technical detail: the team admitted it made the car "more draggy on the straights as the logical result of the downforce increase". Trading downforce for straight-line efficiency is a classic compromise, and it matches the W17 being "much less competitive than expected". Andrea Kimi Antonelli, who finished third, admitted plainly: "we don't really know if it made us go faster or worse". When a driver does not know whether his upgrade made the car better or worse, that is the mark of an unvalidated development direction. Third, McLaren. Andrea Stella said rivals "developed their car with bigger steps than we did" and that there is "no anomaly in our data". This is the most dangerous kind of failure, because it is relative rather than absolute: the car is not broken, rivals have simply overtaken. A relative problem cannot be diagnosed from internal data. Then came the strategic decision. The track was wet but drying slowly. Mercedes and McLaren both gambled on slicks. For Lewis Hamilton, the spray engulfed him and he instantly knew he was "done". Within two laps, he lost roughly a pit stop to his rivals. This was not bad luck; it was a misjudgment of the track's drying rate. Stella later admitted the intermediates were "getting damaged very, very rapidly" on Sepang's tarmac — meaning the "safe" option was itself costly, narrowing the gap between the two strategies. But at the moment of the call, the track was still too wet to justify slicks. I track drivers' acceleration through the lens of athletics. "The track and the pitch are not opposites; they are two rhythms of the same heart." When Marcell Jacobs won the 100m in Tokyo with 9.80 seconds despite being called an "outsider", I learned that people underrate newcomers until the data appears. RBPT winning on debut is the same — a strong signal, but one race is not a reliability baseline. In the same round, George Russell's Mercedes engine "expired", McLaren suffered "recurring power unit issues", and the whole race was hit by "power unit gremlins". Mercedes endured a compound failure: an unvalidated upgrade direction, a strategy error, and a mechanical retirement — all at the home race of title sponsor Petronas. Russell lost the momentum of his Baku win at exactly the moment he needed continuity most. McLaren, meanwhile, faces a more structural problem: the team appears caught between a customer-engine resource gap and its own aerodynamic ceiling. On top of that, the wider picture shows a multi-team disruption. While Red Bull climbs, both Mercedes and McLaren — the benchmarks of the recent era — are struggling at once. This matches a familiar pattern: regulation resets tend to punish teams that over-optimised for the old ruleset. Mercedes added downforce and paid on the straights, while McLaren simply fell behind on development steps. Neither is showing the "concept leap" that a reset rewards. As for the driver market, it is largely frozen. Verstappen is locked to 2030, and both Mercedes and McLaren keep settled line-ups. "The transfer market does not buy the present; it buys promises about the future." But the most notable personnel signal sits in leadership: Christian Horner is referred to as a "former" Red Bull team principal, implying a power transition already completed while the RBPT project matures. Off the track, another story surfaced: the FIA's software failures. The race was "plagued by software issues", and commentators placed the blame squarely on the governing body rather than the teams. This is unusual — when the error comes from the operations side, the entire integrity of the result is called into question. Add the spectator logistics failures at a one-off event, and the operational picture looks rather blurred. There is a contrarian reading the media is skipping: RBPT's win is being over-read. Red Bull won at a circuit the teams themselves call "one-off" and "a very specific condition here in Malaysia". Verstappen is contracted to 2030, but "with the usual exit clauses" — a double-edged signal: long-term commitment on paper, but leverage preserved if the project falters. And the bigger question: is Sepang the start of a new dominance cycle, or just an outlier data point? If Singapore confirms the pattern, we are witnessing a reordering. If not, Malaysia was an exception. The viewer sees the move; I see a whole chess game in motion. I put the probabilities at 45% that Sepang is the start of a new cycle, and 55% that it is the exception of a specific circuit — and I am ready to adjust that number after Singapore. What Sepang leaves behind is not a winner, but a question about how teams read a regulation cycle. When the rules change, the team that dares to leap to a new concept benefits — but only if it can validate that concept with data. Mercedes and McLaren are both upgrading without certainty about their direction. If they are still lost in the fog after Singapore, this season's title race may already have been decided in its opening rounds. I keep my watchlist open, and wait for the next signal.