Mercedes and Red Bull are under investigation over the compression ratios of their 2026 Formula 1 engines. Officials are checking whether the teams’ engines meet the technical rules for the upcoming season.
Compression ratio affects how the engine performs and its efficiency. If the measurements are found to be outside the permitted limits, the teams could face penalties or be required to adjust their designs.
Both Mercedes and Red Bull are cooperating with the checks. The review aims to ensure fair competition and clarity before the 2026 rule changes take full effect.