Xiaomi (小米) SU7 Ultra vented-hood gets free aerodynamic upgrade — two blades added to front compartment to boost downforce

What Xiaomi is changing

Xiaomi (小米) is offering a free aerodynamic upgrade for owners of the SU7 Ultra who selected the carbon-fiber dual-duct front bonnet option, it has been reported. The shopwise explanation shared online says the update adjusts the bonnet's ducting and adds two aerodynamic blades in the front compartment. Those blades will work with the car's active grille to smartly control airflow; in track mode or at high speeds (reportedly above 150 km/h) the system will funnel air to increase downforce.

Rollout, history and logistics

Owners can reportedly book the upgrade through Xiaomi Auto service channels — by calling the 400 line or via dedicated service groups — and the shop installation is expected to take roughly 2–3 hours. The move follows a string of public developments: Xiaomi launched the SU7 Ultra production model with an optional carbon‑fiber dual‑duct bonnet in February 2025, issued an apology over that component in May 2025 with a limited swap-to-aluminum option, and announced the free aerodynamic upgrade for option‑holders in October 2025. The March 2026 booking window is the latest step in that timeline.

Why it matters

Xiaomi says the modification will increase vehicle downforce at speed, which can improve high‑speed stability and track performance — but it has been reported that the tweak will also raise energy consumption, and Xiaomi has not disclosed how much range, if any, will be lost. For owners who seldom exceed 150 km/h, the benefit may be nominal. For performance-focused buyers, though, two little blades could matter. In a broader sense, the update shows how Chinese automakers iterate hardware post‑launch to respond to customer feedback and prototype aesthetics as they scale in a competitive global EV market. Worth it for buyers? That depends on how much you value high‑speed handling versus potential range tradeoffs.