Xiaomi is addressing a costly misstep with its SU7 Ultra performance sedan by offering a no-charge fix for its controversial $5,800 carbon fiber hood upgrade. Buyers of the ”track-level cooling” hood discovered the large front vents were merely cosmetic and did not actually channel air to improve cooling or aerodynamics. Following lawsuits over deceptive marketing and refund demands, Xiaomi has developed a technical upgrade that adds electronically controlled vanes to transform the fake vents into functional airflow devices.
This retrofit allows the new vent system to modulate airflow by opening at speeds above 93 mph or when the driver selects track mode, enhancing downforce and cooling as promised. The upgrade, which takes about three hours to install, requires owners to schedule service through Xiaomi’s app. Xiaomi acknowledges the vanes could marginally reduce driving range at high speed, but everyday driving remains unaffected.

The controversy erupted last May when owners realized their pricey upgrade was all show and no performance. After a Suzhou, China, court found Xiaomi liable and ordered damages paid, the automaker won a second ruling in Changsha stating its marketing language did not amount to intentional deception, highlighting the murky line companies tread when promoting high-end car parts.
While Xiaomi’s lengthy delay to fix the hood vents frustrated customers, the new electronic vanes represent a meaningful technical solution rather than a superficial patch. In a world where automakers often respond to backlash with cosmetic fixes, Xiaomi’s three-hour mechanical upgrade is a rare example of owning the problem beyond PR statements. Still, it raises questions about quality control and marketing honesty in performance electric vehicle accessories, especially when price tags hit thousands.
This episode joins a growing list of tech companies expanding into automotive sectors while navigating pitfalls unfamiliar to their core businesses. Xiaomi’s experience with the SU7 Ultra hood vents could serve as a cautionary tale for other tech titans entering car manufacturing, emphasizing that credibility means more than spin when enthusiasts have high expectations and deep pockets.
Xiaomi SU7 Ultra hood vent upgrade adds functional airflow
The retrofit upgrade for the Xiaomi SU7 Ultra’s carbon fiber hood includes:
- Electronically controlled vanes inside front vents
- Vanes open automatically above 93 mph or in track mode
- Improved airflow for better cooling and increased downforce
- Installation takes approximately three hours via authorized service
- Potential slight reduction in high-speed driving range
Legal challenges over Xiaomi SU7 Ultra hood vent marketing
The controversy around the SU7 Ultra hood vents began when users discovered the vents were non-functional despite marketing claims. Significant legal rulings include:
- May 2023: Suzhou court found Xiaomi liable and ordered damages
- Later ruling in Changsha court cleared Xiaomi of intentional deception
- Highlighting legal gray areas in marketing high-end automotive parts
Impact of Xiaomi’s upgrade on electric vehicle performance accessories
Xiaomi’s response to the hood vent issue shows a commitment to technical solutions over superficial fixes in electric vehicle performance parts. This case underscores challenges in quality control and marketing for tech companies entering automotive manufacturing.

