Red Bull is the only power unit manufacturer on the 2026 Formula 1 grid locked out of engine upgrades, having been classified as the benchmark under the FIA's ADUO system in both assessment periods. Yet the Italian Grand Prix showed that the competitive gap costing Max Verstappen the most is one...
Source: [Yahoo Sports](https://sports.yahoo.com/articles/why-red-bull-cant-fix-120000571.html)