F1’s 2026 rules set a 16:1 compression ratio limit for engine cylinders. This caps how much the engine can squeeze fuel before burning it — the more you squeeze, the hotter it gets and the more power you produce, although if you try and do this too much it becomes counterproductive.

SAKHIR, Bahrain (AP) — Mercedes drivers Kimi Antonelli and George Russell were the fastest at the end of three days of Formula 1 preseason testing in Bahrain on Friday. Antonelli topped the afternoon session,

One F1 team has 'really impressed' members of the paddock during the first Bahrain test, according to commentator Alex Brundle.

George Russell posted the quickest time of the week on the final morning of this week’s Formula 1 test in Bahrain. Mercedes was playing catch-up after a difficult first two days in which it hit trouble,

Laurent Mekies, Red Bull’s F1 boss, has used the word “crazy” to describe the scale of the team’s new in-house engine program. With support from Ford, Red Bull has built its very first F1 engine for 2026, powering its own team and the sister Racing Bulls outfit.

Follow live updates and the best video as the 2026 Formula 1 pre-season continues with three days of testing from the Bahrain International Circuit.

Could Max Verstappen really quit F1? What we learned from second 2026 test in Bahrain - Verstappen’s critical assessment of the new generation of F1 cars is intriguing, just three weeks out from the s