Christian Horner says he feels “hurt and robbed” after leaving Red Bull in July 2025, months before the team’s first in-house engine reached the track for 2026.

The Red Bull Powertrains programme begins in 2021, initially maintaining Honda units before pivoting to become a full manufacturer from 2026 through a technical alliance with Ford.

That effort produces the DM-01, which runs ahead of the season and swiftly delivers a first pole and victory at the Malaysian Grand Prix with Max Verstappen.

Horner is central to the decision to build a power unit, having overseen Red Bull’s expansion from fewer than 400 to more than 2,200 employees.

Context from his past Red Bull tenure highlights sustained growth across technical and operations departments.

That scale-up reshapes the team’s identity, shifting from disruptive challenger to vertically integrated operation. It also raises governance demands amid ongoing warning signs for Red Bull F1 discussed this season.

The 2026 power unit rules remove the MGU-H, increase electrical deployment, and mandate sustainable fuels under a dedicated cost cap. Integration speed therefore becomes a decisive competitive differentiator.

Ford’s involvement supplies additional know-how and validation while Red Bull controls architecture, packaging, and calibration. That balance supports quick decision-making across chassis and power unit groups.

Early success indicates the RBPT learning curve is steep. Close coupling of energy management with aero efficiency suits Verstappen’s precision, turning integration into laptime as processes mature.

Leadership churn can blur accountability on programmes spanning multiple seasons. Horner’s exit disrupts continuity, though foundations remain strong, and details of his exit payout later underline the scale of change.

Internally, the DM-01’s first win is treated as a landmark. A Powertrains representative stands on the podium, while Horner exchanges messages with Verstappen acknowledging the significance.

Financially, Red Bull’s momentum continues, with recent profits reinforcing the investment case behind vertical integration and a long-term power unit footprint in Milton Keynes.

The competitive test now is breadth. Reliability, energy deployment, and thermal management must hold across circuit types while rivals iterate under the same regulatory and cost-cap constraints.

Horner’s frustration reflects the personal cost of long-term projects intersecting with leadership change. The RBPT milestone nonetheless validates Red Bull’s strategic bet on capability, culture, and control.

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Daniel Miller

Daniel Miller reports on Formula 1 Grand Prix weekends with race-day analysis, team-radio highlights, and point-standings updates. He explains power-unit upgrades, aerodynamic developments, and driver rivalries in straightforward, SEO-friendly language for a global F1 audience.