Formula 1 Bahrain GP in Malaysia
Andrea Stella explains recurring Lando Norris straightline speed issue after Bahrain GP qualifying
Norris' lack of speed at the end of straights proved to be an issue in last week's Azerbaijan Grand Prix - and this has resurfaced in Malaysia
Jake Boxall-Legge
Published: Oct 3, 2026, 12:37 PM
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Lando Norris, McLaren
Photo by: Steven Tee / LAT Images via Getty Images
McLaren team principal Andrea Stella has clarified the issues with Lando Norris' current Mercedes power unit, as the reigning champion rued the lack of straightline speed in Formula 1 qualifying for the second week running.
Although McLaren is known to be missing straightline speed versus its other Mercedes-powered counterparts owing to its selected gear ratios being lower, Norris had a deficit on top of that across the Baku weekend. This deficit has resurfaced, although McLaren was losing further time across qualifying when compared to the Red Bulls and Ferraris.
Norris confirmed this, stating: "I'm just down on every single straight, so every time I get a good exit, I'm just slower at the end of the straight. It just hurts seeing this every single time."
Stella explained the mechanics at play with Norris' power unit issue, but added that it was difficult to diagnose given the complexities of the current regulations and the myriad factors that could hold an effect. A deployment issue, for instance, would be easier to spot - but a mechanical issue outside of the reach of sensors would be tough to identify.
The Italian believes that this is costing Norris somewhere between 0.1-0.2s seconds per lap, a not-insignificant deficit given the margins involved in qualifying for this weekend's Bahrain GP in Malaysia.
"I think more precisely we should say that the issue we see on Lando's car is about a lack of straightline speed. So we see that in the power limited section, the car accelerates a little less and develops a little bit less top speed, all the other parameters being the same," Stella explained.
"We talk about probably between one and two kilometres per hour, they are small quantities, and they are even difficult to see. As soon as Lando, for instance, has a little bit of slipstream from a car 4 seconds ahead, now you see Lando faster than the other car.
Lando Norris, McLaren
Photo by: Joe Portlock / Getty Images
"So, it's a small quantities but that we see statistically and we should more precisely talk about the deficit of straightline speed, which we can quantify in a lap time loss that I would say in excess of one tenth of a second, possibly between one and two tenths of a second.
"A different conversation is about why that is and while we can talk immediately about a lack of power, in reality there can be different reasons.
"As you say, it's in a way more difficult to monitor what is happening from a power unit point of view, because if it was deployment we would be able to see it, possibly has to do with some other parameters."
Stella added that those external factors could be nothing to do with the power unit at all, and was keen to avoid a situation where his comments could be construed as blame on Mercedes' High Performance Powertrains division.
The main issue seemed to be largely restricted to the latter half of the lap, where Piastri found more top speed over Norris between Turns 13 and 14, and then on the back straight towards Turn 15.
"But at the same time there's the areas of the power unit that depend on what's happening on the chassis side and finally there could be parameters that have to do with the drag of the car," Stella continued.
"At no point we are making a point about power unit, we are just making a point about a lack of straightline speed which we want to make a point about - because it's fair to Lando that we take the responsibility for the fact that on his car there's a lap time deficit which at the moment we have not been able to remove in a couple of events.
"But obviously we are definitely looking at all the possible parameters and we will look at further changes but we only can do that now for Singapore."
Additional reporting by Filip Cleeren.
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