All articles tagged with #compression ratio
Formula 1 manufacturers unanimously approved a compromise to the 2026 engine-testing rules after a dispute over compression ratio, introducing hot and cold testing from June 1 and deciding that compression measurements will be taken only in operating conditions (130°C) from 2027, with ongoing checks on energy management and battery charging as teams adjust to the new regulations ahead of the season.
The FIA updated F1 technical regs to require engine compression ratios be measured at ambient temperature through May 31, 2026, then at both ambient and 130°C from June 1, 2026 to December 31, 2026, and only at 130°C from 2027 onward, effectively giving Mercedes a seven-race window before full hot-temperature testing applies.
Mercedes unveiled its 2026 F1 car, the W17, built for the biggest regulation reset in the sport’s history with new chassis, engines, tyres and fully sustainable fuel; the car was shown ahead of a Silverstone track run and a closed‑door pre‑season test in Catalunya, as rivals scrutinise a potential compression‑ratio loophole to boost power.