Xiaomi SU7 L Prototype Spotted: Long-Wheelbase Electric Sedan Under Testing

Xiaomi’s ambitious entry into the electric vehicle sector continues to evolve, as fresh spy shots reveal what appears to be a long-wheelbase variant of the SU7, informally dubbed the Xiaomi SU7 L. The extended model, currently under heavy camouflage, is expected to prioritize rear passenger comfort, positioning itself as an executive-class sedan in China’s increasingly competitive EV market.

Key Takeaways

• Spy shots show a camouflaged Xiaomi SU7 prototype with a longer wheelbase.
• The extended sedan, possibly named SU7 L, could measure up to 5.2 meters.
• Design retains the SU7’s fastback profile but adds more rear cabin space.
• Market positioning hints at an executive sedan, rivaling luxury EVs.
• Expected pricing could start above 400,000 yuan (≈ $55,800).

A Longer, More Spacious Xiaomi SU7

Images shared by automotive blogger @风清颂 reveal a prototype that looks noticeably longer than the current SU7. While the standard model measures 4,997 mm in length with a 3,000 mm wheelbase, estimates suggest the SU7 L could stretch to 5.2 meters, with its wheelbase extended by 80–150 mm.

The most evident change appears behind the B-pillar, where the additional bodywork enhances second-row space. This adjustment is aimed at improving rear legroom, catering to business-class buyers and passengers who prioritize comfort over sportiness.

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Executive-Class Positioning

While retaining the wing-shaped front fascia and star-ring taillights of the SU7, the prototype’s elongated proportions hint at a new strategy. Analysts believe the SU7 L could shift Xiaomi away from its youthful, sporty image toward the executive sedan segment, competing with premium players such as the Porsche Panamera Executive.

Expected upgrades may include:

• Wider, more comfortable rear seating.
• Higher-quality interior trims.
• Independent rear entertainment systems.
• Possible premium features such as a refrigerator for passengers.

This executive-focused approach would differentiate the SU7 L from its standard counterpart, which is marketed as a mid-sized high-performance sedan.

Technical Basis and Platform

Although Xiaomi has not confirmed technical details, the SU7 L is expected to retain the 800V high-voltage platform and the brand’s intelligent driving systems. The current SU7 features an aerodynamic drag coefficient of 0.195, one of the lowest in its class.

A longer body, however, will require revised suspension tuning to maintain handling precision while delivering a smoother ride. Xiaomi’s engineers will need to balance dynamics with comfort to ensure the new variant appeals to executive buyers.

Market Positioning and Competition

Industry speculation suggests the SU7 L could start above 400,000 yuan (≈ $55,800), placing it between domestic competitors like the BYD Han L 4WD Flagship (279,800 yuan ≈ $39,030) and global rivals like the Tesla Model S (684,900 yuan ≈ $95,550 in China).

This strategic pricing would allow Xiaomi to target buyers seeking a blend of luxury and value, appealing to consumers unwilling to pay Tesla’s premium but desiring more prestige than BYD’s flagship sedan.

Multiple Xiaomi Models in Development

The spy shots also confirm that Xiaomi is testing several prototypes simultaneously, including the previously reported YU9 SUV and the performance-focused YU7 GT (formerly referred to as the YU7 Ultra). This parallel development strategy suggests Xiaomi aims to rapidly expand its EV lineup and capture market share across multiple segments.

Looking Ahead

The Xiaomi SU7 L remains in early testing stages, with no official confirmation of its name, specifications, or launch timeline. Industry observers, however, suggest a possible market debut around 2026.

If delivered as expected, the SU7 L could mark Xiaomi’s entry into the executive EV sedan space, reinforcing its ambition to challenge both domestic rivals and established global luxury brands.