Xiaomi has been caught testing a dramatically revised version of its SU7 Ultra at the Nürburgring, with a pair of prototypes photographed carrying aggressive new aerodynamic parts. The changes include a large front splitter, side skirts, louvers above the front wheels, a twin-plane rear wing on swan-neck mounts and an all-new diffuser.
The timing is pointed. The standard SU7 Ultra, a tri-motor electric sedan with 1,548 hp, held the production-car lap record at the Nürburgring for an executive EV until the Porsche Taycan Turbo GT Manthey took it earlier this year. These prototypes suggest Xiaomi is preparing a response.
The most striking change is at the rear. The twin-plane wing is nearly as large as the unit on a Porsche 911 GT3 RS and, like that car, uses huge swan-neck mounts. The images also appear to show the components needed for an active Drag Reduction System, which would open one of the wing's slats at the press of a button to cut drag and raise top speed. That would mirror the setup on the Porsche that beat it.
Below the wing sits a new diffuser, likely made from carbon fiber, that resembles the one Manthey offers for the Taycan Turbo GT. Working together, the wing and diffuser are designed to keep the EV's rear wheels planted at speed.

Brakes, suspension and possibly more power
The front end has been overhauled too. The bumper now carries a large splitter and aero skirts on either side, with louvers above the front wheels and large side skirts along the flanks. In some photos the carbon ceramic brake discs are glowing red, which hints that braking hardware may have changed as well.
The added downforce will almost certainly require suspension changes, and a power upgrade is possible. Xiaomi has previously shown a quad-motor powertrain producing 2,054 hp but has not fitted it to a production model, and a hotter SU7 Ultra would be an obvious candidate.
What it means for the Porsche fight
The road car is visibly moving toward the configuration of the original record-setting SU7 Ultra Prototype, which suggests this is a lap-time exercise rather than a routine facelift.
Nothing has been confirmed. Xiaomi has not announced the upgrades, a launch date, pricing or whether the DRS and quad-motor drivetrain will make production, so the prototypes leave plenty of questions open.

