Overview
- Lewis Hamilton's win in Barcelona cut Kimi Antonelli's lead and ended Mercedes' six-race run, prompting urgent action inside the Silver Arrows.
- Team principal Toto Wolff has pushed a package of upgrades to Austria aimed at both performance and fixing the electrical and power-unit failures that caused multiple DNFs this season.
- Mercedes led first practice in Spielberg with a one-two from Kimi Antonelli and George Russell on Friday, underlining the team's raw pace after the update.
- Rivals brought major development too — Ferrari debuted an engine upgrade and Red Bull trialled a large aero and weight package — but Red Bull and McLaren suffered software and hydraulic problems in FP1 that limited running.
- The FIA declared the weekend a heat-hazard event, which raises cooling and reliability risks for high-altitude, power‑sensitive Red Bull Ring machinery and makes Austria a crucial short-term test of the new parts and team strategy.