The maiden appearance of Red Bull’s self-developed power unit edges closer as both Red Bull Racing and RB prepare for their first private testing session in Barcelona later this month. While the winter shakedown will remain closed to the public, it represents a pivotal moment in evaluating whether three years of intensive development work has yielded a competitive propulsion system for the 2026 regulatory era.
Ford Performance director Mark Rushbrook has disclosed that the American manufacturer’s technical involvement in the Red Bull Powertrains venture has grown substantially beyond what was originally envisaged when the partnership was announced. What began as a focused contribution to electrical components has evolved into a comprehensive collaboration spanning combustion technology, advanced manufacturing processes, and powertrain integration.
Initial scope centred on electrification components
When Ford and Red Bull first outlined their technical partnership—with team principal Christian Horner leading negotiations on Red Bull’s behalf—the agreement primarily targeted the hybrid system elements that will define the 2026 power unit regulations. Ford’s original remit covered battery cell development, electric motor design, inverter technology, control software, and calibration systems, alongside financial backing for the Milton Keynes-based facility.
Rushbrook confirmed these deliverables have been fulfilled as planned. “The original list was focused on the electrification part of it: the battery cell, the motor, the inverter, the software, and the calibration board. That was primarily the list, and that has certainly been delivered,” he explained in a detailed discussion with specialist media.
Yet the partnership’s technical boundaries shifted as both organisations recognised opportunities for deeper integration. Ford’s involvement now extends to 3D printing capabilities and, crucially, combustion engine development—an area that was not part of the initial framework.
Strategic shift brings combustion expertise into focus
The expansion into internal combustion engine work stems from evolving priorities within Ford’s broader automotive strategy. As the manufacturer refined its long-term product planning, maintaining expertise in traditional powerplants remained essential alongside hybrid and fully electric vehicle development.
“What we didn’t expect, and what wasn’t a priority for us initially, was the combustion engine. That changed during the programme, especially as our road car cycle plan has changed,” Rushbrook noted. Ford’s production roadmap continues to include internal combustion engines across multiple markets, making Formula 1’s combustion technology directly applicable to road car development.
This alignment created mutual benefit. As Ford engineers worked alongside Red Bull Powertrains personnel on electrification systems, they observed combustion development processes and identified areas where their manufacturing prowess could add value. Ford’s facility in Dearborn, Michigan now produces numerous combustion engine components for the F1 power unit, with parts manufactured and shipped to the United Kingdom on a daily basis.
Rushbrook emphasised this expanded role does not reflect shortcomings on Red Bull’s part. “It wasn’t necessarily that things were lacking, but as you have the technical minds together, and they’re working on certain things, they overhear or get asked questions. What would Ford do in this situation? And that’s where we were able to say, we can actually help.”
Knowledge transfer benefits both organisations
The deeper collaboration has elevated Ford’s internal capabilities, particularly in precision manufacturing and quality control standards demanded by Formula 1. Rushbrook described the technical gains as transformative, particularly regarding additive manufacturing techniques, dimensional tolerances, and component design optimisation.
“When I talk about the combustion engine, there’s the design of it, the actual manufacturing of the components, the physical parts, additive manufacturing, and so on. It has really pushed us to a much higher level than where we’ve been during earlier programs,” he said. The quality control and dimensional precision requirements have established new benchmarks within Ford’s operations.
Battery chemistry represents another area where bidirectional learning has occurred. While Ford contributed established knowledge from its automotive electrification programmes, the extreme performance requirements of Formula 1 have generated insights applicable to future road car development. Software and calibration work stands out as Ford’s most substantial technical contribution, drawing on decades of experience managing complex hybrid systems across its production vehicle lineup.
Manufacturing precision reaches new heights
The partnership has required Ford to meet Formula 1’s exacting standards across every manufacturing process. Components produced in Dearborn undergo rigorous inspection protocols that exceed typical automotive tolerances. This elevation in manufacturing capability provides Ford with enhanced technical capacity that extends beyond the F1 programme, benefiting future road car projects requiring similar precision.
Future regulations remain acceptable for Ford’s participation
Discussion surrounding Formula 1’s power unit regulations beyond 2030 has begun in earnest, with FIA president Mohammed Ben Sulayem initially proposing a return to V10 architecture before moderating to V8 configurations with retained electrification. For Ford, the specific technical formula matters less than maintaining relevance to its production vehicle strategy.
“The fact that we’re going to have different balances of combustion engines, multiple variants of hybrids and full electric, we are comfortable sitting at the table. As long as we have something that is reasonably relevant to us, we’ll be happy,” Rushbrook stated. Ford’s diverse powertrain portfolio—spanning pure combustion, various hybrid architectures, and battery electric vehicles—provides flexibility in responding to different regulatory scenarios.
The manufacturer recognises that every motorsport category requires compromise between competing interests. Ford’s broad technological base means it can accommodate various technical directions without losing strategic alignment. When asked explicitly about V8 engines with electrification components, Rushbrook offered unequivocal support: “Yes.”
Long-term commitment appears increasingly likely
Ford’s expanded technical involvement and strategic comfort with potential future regulations suggest the partnership with Red Bull Powertrains could extend well beyond the initial regulatory cycle running through 2030. The manufacturer has previously indicated its F1 investment is structured with long-term objectives in mind rather than a single regulation period.
The Barcelona testing session will provide the first real-world validation of whether the combined Ford and Red Bull engineering effort has produced a competitive power unit. Both organisations understand the maiden running represents just the beginning of an intensive development phase leading to the 2026 season opener. The knowledge gained through this partnership has already transformed internal processes at Ford, while Red Bull gains access to manufacturing expertise and electrification knowledge that strengthens its position as an independent power unit supplier.
As Formula 1 enters this new era of powertrain competition, the Ford-Red Bull collaboration demonstrates how traditional automotive manufacturers can find renewed relevance in the championship through carefully structured technical partnerships that serve both competition objectives and road car development goals.
