Bottom Line Up Front
Red Bull will be the deciding vote in the fight to close the Mercedes engine loophole that could give the German team a big advantage in the 2026 Formula 1 season.

Red Bull Deciding Vote: Mercedes F1 Engine Loophole Battle – What It Means
Image: Red Bull Deciding Vote: Mercedes F1 Engine Loophole Battle – What It Means – Performance Comparison and Specifications
Design & Looks
Mercedes has built a hybrid V6 power unit that exploits a gray‑area in the 2026 regulations. The loophole lets them keep more of the old‑generation hardware while still meeting the new hybrid‑electric rules. Red Bull, who runs a different power unit partnership, believes the rule should be tightened so every team follows the same design constraints.
Performance & Mileage
The Mercedes engine can produce over 1,000 horsepower when the ERS (Energy Recovery System) is at full boost. Its fuel‑efficiency is roughly 0.8 km per liter of fuel – typical for a modern F1 power unit. If the loophole is closed, Mercedes would need to redesign the unit before the March 1 homologation deadline, which leaves them very little time to test a new layout.
Price & Rivals
Developing a brand‑new 2026 engine costs an estimated $30 million plus ongoing testing fees. Red Bull’s own engine partner, Honda (now known as Red Bull Powertrains), is already spending a similar amount, but they are building a clean‑sheet design that follows the stricter interpretation of the rules.
| Engine | Mileage (km/L) | Price (US$ M) | Top Features |
|---|---|---|---|
| Mercedes 2026 | ~0.8 | 30 |
|
| Red Bull Powertrains 2026 | ~0.8 | 30 |
|
FAQ
What is the Mercedes engine loophole?
It is a technical gray‑area that lets Mercedes keep more of their old 2025 hardware while still complying with the 2026 hybrid regulations.
When must the 2026 engines be homologated?
All teams must lock in their engine designs by March 1, 2024, for the 2026 season.
Will closing the loophole affect race performance?
Yes. If the rule is tightened, Mercedes will need a new engine, which could reduce their power and reliability until the new unit is fully tested.
What do you think about Red Bull’s push? Let us know in the comments below.
Source: Read Official News







