The new Xiaomi SU7 electric sedan underwent a comprehensive live teardown led by company CEO Lei Jun in China, exposing the intricate engineering and materials science behind the vehicle. The 3.5-hour broadcast dissected the car to the component level, covering exterior build, interior features, safety structures, and electrical systems. This detailed examination underscores Xiaomi’s commitment to transparency and quality in its automotive debut.
Exterior and Manufacturing Precision
Xiaomi’s approach to the SU7’s exterior prioritizes durability and finish. The body employs a “3C2B” paint process – three coats and two baking stages – combined with galvanized steel and electrophoresis for corrosion protection. This ensures long-term resistance to weather and road damage, a critical factor in real-world vehicle longevity.
The wheels are milled for 13 hours using 22 tools, showcasing an obsession with precision. The front bumper integrates advanced radar tech, with the high-end SU7 Max gaining unique brake cooling ducts – a detail that speaks to performance intent.
Headlights utilize copper substrates and cylindrical heat sinks for efficient thermal management, vital for LED longevity. The taillights employ 360 LEDs spaced 10mm apart, delivering high visibility and a striking visual signature.
Interior Tech and Integrated Systems
The SU7’s interior incorporates high-tech features like an upgraded refrigerator compressor, a 25-speaker sound system, and an 8-microphone array for five-zone voice control. Xiaomi has covered over 90% of door panels with sound insulation to minimize external noise.
The vehicle’s domain control module consolidates cockpit, driver assistance, vehicle control, and communication functions into a single unit – reducing weight and simplifying integration. Electronic fuses provide rapid power-off execution, enhancing safety. The SU7 is equipped with LiDAR, 4D radar, 12 ultrasonic sensors, and 11 cameras for advanced driver assistance systems.
Chassis, Safety, and Structural Integrity
The SU7 uses a front double-wishbone and rear five-link suspension to maximize grip during braking and cornering. Standard trims come with 265mm rear tires, while the SU7 Max features Brembo brake calipers for improved stopping power. Air suspension is available, adjusting ride height and stiffness in real time.
The chassis utilizes 7-series aerospace-grade aluminum and high-strength steel (up to 2,200 MPa) in critical areas like door beams, A-pillars, and C-pillars. The rear floor is a three-section design, simplifying post-collision repair. The car comes standard with nine airbags, including rear side airbags and woven curtain airbags.
A crash test simulation revealed the front crumple zone absorbing energy effectively during a 50% offset collision at 60 km/h, with minimal deformation of the A-pillar. The battery is protected by a reinforced frame made of high-strength steel.
Market Reception and Specifications
The Xiaomi SU7, which measures 4997/1963/1445 mm with a 3,000 mm wheelbase, has already received 40,000 firm orders in the domestic market following its March 19 launch. Standard and Pro trims offer a 235 kW rear motor, while AWD models reach 508 kW. Battery options include 73 kWh, 96.3 kWh LFP, and 101.7 kWh ternary NMC packs, delivering between 720 and 902 km of CLTC range.
The Xiaomi SU7 teardown isn’t just a demonstration of engineering prowess; it’s a statement of intent in a competitive EV market. By revealing the internal workings, Xiaomi aims to build trust through transparency and reinforce its commitment to quality.
