# Red Bull 2026 F1 power unit challenges > Live situation record from CLSTR: https://clstr.news/situations/red-bull-2026-f1-power-unit-challenges > Updated: 2026-08-07T15:35:43.000Z. Sources: 2. Developments: 2. In late July 2026, the FIA’s ADUO assessment ranked the Red Bull‑Ford power unit ahead of Mercedes, triggering additional development allowances for Mercedes, Ferrari, Audi and Honda. Red Bull, while leading the performance index, was reported to be weighing an early halt to its current chassis programme and a shift of resources toward a new 2027 car, amid driver Max Verstappen’s concerns about the car’s performance and telemetry. By early August, external commentary highlighted that the optimism was not translating on track. Former Ferrari engineer Rob Smedley gave Red Bull a mid‑season rating of five out of ten, citing recurring balance, race‑pace and reliability problems with the RB22 power unit. Multiple retirements for Verstappen and rookie Isack Hadjar, including rear‑wing failures and sudden loss of power, left Verstappen winless despite a second‑place finish in Hungary. The snapshot shows the team struggling to deliver the results expected of a championship‑winning outfit. Together, the snapshots trace a shift from a performance‑lead assessment to on‑track reliability setbacks, underscoring the challenges Red Bull faces with its 2026 power unit as it contemplates future development directions. ## Timeline ### 2026-08-07: Red Bull Racing given 5/10 mid‑season rating amid power‑unit troubles Rob Smedley rates Red Bull Racing 5/10 for 2026, citing recurring power‑unit and reliability problems that have left Max Verstappen winless so far. 2 sources. https://clstr.news/cluster/red-bull-racing-given-510-midseason-rating-amid-powerunit-troubles ### 2026-07-28: Red Bull Ford power unit leads over Mercedes in FIA ADUO assessment Red Bull‑Ford’s engine tops the FIA ADUO rating over Mercedes, prompting possible updates for rivals; Red Bull also eyes an early shift to a 2027 car amid performance worries. 3 sources. https://clstr.news/cluster/red-bull-ford-power-unit-leads-over-mercedes-in-fia-aduo-assessment --- Cite as: Red Bull 2026 F1 power unit challenges. CLSTR, https://clstr.news/situations/red-bull-2026-f1-power-unit-challenges