FIA Announces Major Shift in F1 Power Unit Split for 2027 Season

Formula 1 will shift away from the current near 50:50 split between combustion and electric power for the 2027 season, the FIA announced on Friday. The move follows widespread concerns about the current formula, which was introduced in 2026 and has drawn criticism from teams, drivers, and fans over its impact on racing and costs.

Why it matters:

This regulatory pivot could fundamentally reshape the competitive landscape. By altering the power unit balance, the FIA aims to address issues such as excessive complexity, rising development costs, and a perceived lack of excitement in the current generation of cars. The change will force engine manufacturers to rethink their development roadmaps, potentially shifting advantages from those who invested heavily in the 50:50 split toward more flexible strategies.

The details:

• The current 2026 regulations mandated an equal split between combustion and electric power, a radical departure from previous eras.
• That approach faced pushback from multiple camps, with concerns that the cars were too heavy, too reliant on electrical energy, and that the racing suffered from a “yo-yo” effect as batteries depleted.
• While the FIA has not yet revealed the exact new ratio, the announcement signals a clear departure from the 50:50 target.
• The decision was reached after months of consultation with teams, power unit manufacturers (including Ferrari, Mercedes, Red Bull Ford, and Audi), and the commercial rights holder.

The big picture:

F1’s power unit regulations have evolved continuously—from V10s to V8s, then V6 hybrids. The 2026 formula was intended as a bold step toward sustainability, but real-world feedback has prompted a mid-cycle correction. This shows that even with detailed advance planning, on-track reality often forces adjustments.

What's next:

The FIA will publish the updated technical regulations in the coming weeks, with a formal ratification expected at the next World Motor Sport Council meeting. Teams will then have a limited window to revise their 2027 power unit designs—those already deep into development may face expensive rework, while newcomers could benefit from a cleaner slate.