Interlagos’ compact layout and history of variable November weather create a closely balanced outlook for safety car deployment at the 2026 São Paulo Grand Prix, reflected in the even 50% implied probability. The circuit has seen an 86% safety car rate across recent editions, driven by its undulating surface, tight barriers, short run to Turn 1, and frequent rain that reduces grip and visibility. Recent wet races produced multiple interventions from crashes, debris, and aquaplaning, while dry conditions have occasionally allowed uninterrupted running. Trader sentiment balances these proven incident risks against the chance of stable weather and improved car reliability. Updated forecasts showing sustained dry or heavy rain, plus any qualifying incidents or track-surface issues, remain the developments most likely to shift probabilities in either direction.