Cadillac Boss Confirms 'Fully Legal' Ferrari Engine Amid Power Unit Controversy

Cadillac team principal Graeme Lowdon has firmly stated that his team's 2026 power unit supplied by Ferrari is "fully legal," directly addressing swirling rumors regarding potential regulatory exploitation by rival manufacturers. This declaration comes amid reports suggesting Mercedes and Red Bull may have found a way to bypass the new 16:1 compression ratio limit for significant performance gains.

Why it matters:

With the 2026 regulations overhaul approaching, the integrity of the power unit rules is paramount. Allegations of "tricks" to bypass compression limits threaten to spark a technical and political dispute reminiscent of previous engine eras. Cadillac, as a newcomer relying on a customer supply, aims to position itself on the moral high ground while ensuring competitive parity against manufacturer teams.

The details:

• The Alleged Trick: Reports over the winter claimed Mercedes HPP and potentially Red Bull Powertrains discovered a method to increase the engine compression ratio beyond the mandated 16:1 limit while on track.
• Performance Gain: This exploit could allegedly be worth up to 0.3 seconds per lap, translating to roughly 17.4 seconds over a full race distance at Albert Park.
• Regulatory Loophole: The trick reportedly relies on thermal expansion properties. While the engine operates at a higher ratio on track for power, it returns to the legal limit when measured at ambient temperature in the pit lane.
• Cadillac's Stance: Lowdon emphasized that Ferrari has "completely followed the rules," expressing confidence in the legality of their supply. He noted the regulations are "black and white," contrasting his view with the ambiguity surrounding rival interpretations.

Looking ahead:

As the season opener approaches, all eyes will be on the FIA's policing of these technical regulations. With the Mercedes car launch imminent and RBPT's non-denial, the grid awaits to see if these alleged advantages will be protested or validated by the governing body.