Mercedes and Red Bull are currently under technical scrutiny in Formula 1 because officials are reviewing their 2026 engine compression ratios to make sure they comply with the new rules.
The compression ratio affects engine performance, and if it’s found to be outside the permitted limits, the teams might have to make changes or face penalties. Both teams are cooperating with the investigation, which aims to ensure fair competition before the new season begins.
The review is part of FIA’s efforts to confirm that all teams follow the technical regulations for the upcoming 2026 campaign.