McLaren and the Gap at the End of the Straight: An Energy Map Left Unfinished

I stopped at the final corner of Sepang. On screen, Lando Norris closed his flying lap at 1m35.757s, 0.6 seconds off Max Verstappen's pole. But the number that made me rewind the footage three times was not the gap itself. It was the sight of Norris deploying DRS on the longest straight, with Verstappen's rear wing still at the same distance, even slightly further as both hit the braking marker. A McLaren losing time exactly where every team has believed they are strongest for years: the straight.

For someone who reads energy maps for a living, that is a signal impossible to ignore. The problem is not aerodynamics. It sits elsewhere, and it carries a very specific signature.

A new power unit cycle and the price of customer status

We are at the start of the 2026 power unit cycle. The new rules make the hybrid power unit far more complex, with electrical output rising sharply relative to the internal combustion engine. That means a team no longer needs only a good car. It needs a good energy deployment map — knowing where to place electrical power on every straight, every corner, every lap. The difference between a good flying lap and a poor one can be a few hundred milliseconds of misplaced energy.

McLaren runs Mercedes power as a customer. That is the root of the entire story. Customer teams buy engines — they do not own internal integration data, they lack deep firmware access, and they have no engine engineers embedded in their factory. In a fresh rule cycle, when accumulated experience equals zero, that gap goes beyond having less data — it becomes starting later. This is the mechanism analysts call the structural disadvantage of a customer team.

Norris was blunt: McLaren failed to optimise its Mercedes engine. He said that right after qualifying, with the car in sixth. The reigning world champions. In sixth place.

I remember the summer of 2026. With stadiums empty, I spent six months rewatching 74 Premier League matches and found one thing: a gap is never truly empty, it is only waiting for the right reader. That principle applies unchanged to the straight at Sepang.

The technical signature: read the symptom before diagnosing the disease

Before the detail, here is the raw data I logged from qualifying.

Norris: 1m35.757s, 0.6s off pole, 0.005s ahead of teammate Piastri. Piastri: seventh, same flying lap separated by under one hundredth of a second. McLaren's best long run: on average only 0.2s behind Red Bull, second-best of the field, behind the leading team itself.

What do these three data points tell us? Read each one.

First, the 0.005-second teammate gap is nearly zero. Both McLaren drivers are extracting the car at the same limit. This is evidence the problem lies with the car, not the driver. If one were a quarter of a second slower, we could suspect individual form. When the two almost match, the car is sending a clear message.

Second, the second-best long run in the field. Reading only qualifying would tell you McLaren is struggling. But race pace — where fuel is heavier, tyres wear more, and strategy truly begins — puts them much closer to Red Bull. That suggests the MCL40's chassis and aero remain competitive. The problem sits elsewhere.

Third, and this is the crux: the 0.6-second qualifying gap. A car with the second-best long run cannot simply lose 0.6 seconds over one lap. Not unless it loses time in a specific place. And that place is the straight.

Central conclusion: McLaren is losing time at the end of the straight due to an energy-system integration gap — not because of chassis or aerodynamics.

The signature of a deployment problem is entirely different from the signature of an aerodynamic problem. A car short on downforce loses time in high-speed corners — where the driver must lift earlier and brake later to compensate. A car short on ICE power or electrical deployment loses time at the end of the straight, where top speed hits a ceiling. Norris describes precisely the second symptom: losing time at the end of every straight.

Given Sepang's characteristics — two long straights, heavy braking, consecutive high-speed corners — any power gap is amplified. It is the harshest test for an unfinished energy system. If McLaren loses 0.6 seconds at Sepang, that number may shrink at a slower circuit. Conversely, this is also the circuit that exposes the problem most clearly.

Norris said: It just hurts seeing this every single time. The phrase every single time matters more than the sentence. It means this is not a one-off. It is a structural issue stretching across multiple events, and the updated parts received at Spa in July only fixed part of it. Every strategy diagram begins with a shaky hand-drawn line on PowerPoint — and a shaky line cannot fix an energy system that has not yet synchronised.

Piastri chose different language. He said Sepang really exposes the MCL40's weaknesses, and stressed there is a lot of strategy involved with the high degradation. It is a healthy division of messaging: one places emotion on the gap, the other places engineering on how to offset it. Both are talking about the same car.

One more detail stands out: Piastri admitted McLaren's long runs were slightly shorter than everyone else's. If true, McLaren's race pace may be more real than it looks — or it may be an illusion, and the answer lies in whether the team has clean enough data to believe in itself.

Where time disappears, and why it matters more than speed

The key point: McLaren's problem is not that they are slow. It is that they are slow exactly where overtaking happens. You can have the best chassis on the grid, but if you cannot stay with the car ahead on the straights, you get stuck in the DRS train. At Sepang, where dirty air is decisive in high-speed corners, being stuck means hotter tyres, faster wear, and good race pace becoming meaningless.

This is the mechanism I call the geometry of gaps: once you are trapped in the train, the space ahead is no longer space to attack, but space to survive. Every second in the tow is a second of tyres losing optimal temperature, a second of engine working off its ideal mode. McLaren may enter the race with the second-best race pace, but if they cannot escape the DRS train in the first ten laps, that pace will vanish before they can use it.

Piastri is right to mention a lot of strategy involved. With high degradation, the pit window opens and closes fast. Pitting two laps earlier or later than a rival can decide the whole race. And in that situation, McLaren's ability is not in overtaking, but in setting strategy so they never have to overtake on the straight. Transition is not a stretch of running. It is the silence between two intentions that few can read — and at Sepang, that silence sits at the end of every straight.

Self-rebuttal: when a beautiful number rests on a weak foundation

But this is where I have to rebut myself.

The beautiful long-run number — second in the field, 0.2 seconds behind Red Bull — rests on an unstable foundation. Piastri admitted McLaren's long runs were slightly shorter than everyone else's. Smaller sample size weakens the conclusion drawn from it. This is a classic mistake: good correlation on a small sample does not equal genuinely good race pace. I have reminded myself of this for years, and I still have to remind myself every week.

I once wrote a piece four years ago, concluding Croatia would control 62% of possession and beat Russia thanks to six players running over 12km per match. Croatia won — but on penalties, after a 2-2 draw, and readers pointed out exactly one thing: I had not measured transitions. Russia 2026 did not only warn about transition. It warned about how we read matches. That was the lesson of reading half the data and trusting the other half. McLaren's long-run numbers carry the same risk.

There is another possibility no one wants to say out loud: the 0.005-second teammate gap may be hiding the severity of the engine problem. Because both drivers lose the same amount of time, the symptom becomes uniform and hard to spot. In other words, sixth and seventh may be understating the true loss compared to a works team. A bad pass is not a mistake. It is data the system is trying to send you — and here, two near-identical laps are sending the same message.

And this is the biggest blind spot: if the problem lies in deployment software, it can be fixed, even within a few rounds. If it lies in homologation-locked hardware, it will follow McLaren all season. Without sector-by-sector GPS data to distinguish the two, every conclusion should be held in suspension. When there is no football, I draw football. And it turns out drawing is also a way of understanding — but a drawing is only right when I am honest about what I cannot see.

What to watch

Sunday's race will answer two questions. First, whether strategy — an early pit stop, a different compound, accepting the long way round to escape the DRS train — can turn good race pace into real positions. Second, whether the 0.2-second long-run gap is truth or merely a short-sample misread.

I will log two numbers next round: Norris's position on the straight relative to the leading car, and the length of his first stint. Every strategy diagram begins with a shaky hand-drawn line on PowerPoint. McLaren's energy map is the same — rough, unfinished, but honest about what I see. And sometimes, that is the only way to begin.