McLaren has sent shockwaves through the Formula 1 paddock after announcing an internal investigation into Oscar Piastri’s car following his fifth-place finish at the United States Grand Prix. The revelation came directly from CEO Zak Brown, who admitted there were “internal concerns.”

The statement, released just hours after the race, caught everyone by surprise. McLaren, usually known for its discipline and transparency, confirmed that a full inspection of Piastri’s car was underway to clarify a series of “unusual performance inconsistencies.”
Zak Brown reportedly became aware of potential irregularities during post-race data analysis. According to team insiders, telemetry readings from Piastri’s car displayed unexpected variations in speed, tire temperature, and aerodynamic pressure compared to teammate Lando Norris.
While the initial results were not conclusive, the team leadership deemed the discrepancies significant enough to warrant a deeper investigation. Engineers were ordered to disassemble parts of the car and conduct a complete performance audit.
In a short briefing, Brown stated that “some internal evidence” had raised questions about whether the car had performed at its full potential or whether an underlying issue had gone undetected throughout the race weekend.
This development followed an already tense post-race atmosphere, as Piastri had been visibly frustrated after finishing fifth. His angry remarks toward Red Bull’s RB21 and Max Verstappen’s victory added even more drama to McLaren’s already complex situation.
Rumors quickly spread that the team was looking into possible technical malfunctions related to the car’s power unit or aerodynamic updates introduced earlier in the season. However, McLaren has not yet confirmed any specific component under suspicion.

The FIA has been informed of McLaren’s investigation, though the team emphasized that it was a “purely internal matter.” Officials clarified that, for now, there is no indication of regulatory violations or external interference in Piastri’s car.
Sources close to the team revealed that the internal evidence mentioned by Brown included inconsistent data from the car’s rear suspension sensors, which could have affected balance and tire degradation during high-speed corners.
Piastri himself has remained silent since the news broke. According to a team representative, he has been cooperating fully with the engineers and has agreed to participate in simulator tests to help reproduce the problem under controlled conditions.
The Australian driver’s frustration after the race now appears to have had some justification. Several experts believe his lack of pace in the final laps may have been influenced by a technical fault rather than purely driver performance.
Zak Brown’s decision to make the issue public is seen as a bold move. By acknowledging possible internal problems, he aims to demonstrate transparency and maintain the team’s integrity amid growing speculation from the media and fans.
Lando Norris, meanwhile, has declined to comment on his teammate’s situation, saying only that “the team is doing everything to understand what went wrong.” Norris’ calm and diplomatic tone contrasts with Piastri’s emotional outburst in Austin.
Analysts believe McLaren’s investigation could have major implications for the remainder of the season and the team’s development plans for 2026. Any unresolved mechanical inconsistencies could delay crucial upgrades or impact reliability in upcoming races.
Inside the paddock, rival teams are watching closely. Some engineers from Mercedes and Aston Martin reportedly expressed curiosity about McLaren’s telemetry data, wondering if similar fluctuations might exist in their own systems.

For McLaren, the timing of the issue is particularly delicate. The team has been on an upward trajectory, gradually closing the gap with Red Bull, and internal turbulence could threaten that progress if not managed carefully.
Zak Brown’s leadership style is known for being hands-on and transparent. By addressing potential issues head-on, he hopes to reinforce confidence among sponsors, team members, and fans who have supported McLaren’s resurgence in recent seasons.
The internal investigation is expected to take several days, with engineers working around the clock to analyze every detail. The team’s technical director has reportedly ordered additional tests on the car’s hybrid components and data sensors.
Despite the seriousness of the situation, McLaren has reassured supporters that this investigation does not imply wrongdoing. The team insists the goal is to understand performance drops and ensure that both cars perform at their maximum capacity.
F1 experts have praised McLaren for handling the issue openly, noting that such transparency is rare in a sport often dominated by secrecy. However, others warn that publicizing “internal evidence” without clear conclusions could fuel unnecessary speculation.

Fans have taken to social media to express mixed reactions. Some applaud McLaren’s honesty and Brown’s leadership, while others fear that the revelation could undermine Piastri’s confidence or suggest deeper internal divisions within the team.
What remains certain is that McLaren is determined to identify the root cause before the next race weekend. The team cannot afford further doubts or inconsistencies as it battles for vital championship points against Ferrari and Mercedes.
If the investigation confirms a technical problem, it could vindicate Piastri and explain his underwhelming result at the U.S. Grand Prix. If not, McLaren will face tough questions about driver performance, strategy, and communication.
As engineers continue to comb through data, the spotlight on McLaren grows brighter. Zak Brown’s “internal evidence” remark has created a storm of curiosity and anticipation within the world of Formula 1. Everyone is waiting for answers.
Whether the findings reveal a simple mechanical fault or something far more complex, McLaren’s investigation could reshape its path toward 2026. For now, all eyes remain on Woking, where every detail could determine the team’s future.
