Yangwang

BYD quoted torsional rigidity of 54,425 Nm/degree for the U9 body structure and a structural lightweight coefficient of 0.95.

BYD stated that the U9's body-control system can lower the centre of gravity to 393 mm on track and raise ground clearance to as much as 145 mm for city driving.

The U9's DiSus-X system actively controls body movement; BYD demonstrated functions including three-wheel driving, vehicle “dancing” and a stationary jump.

In track testing described by BYD, the U9 reached instantaneous lateral acceleration of up to 1.7 g, while the manufacturer quoted a 0.72°/g understeer gradient in the linear range.

At its 2023 supercar-platform presentation, BYD stated that the U9's four-motor e4 system produces more than 1,300 horsepower.

The U9 uses the e4 platform with four independently driven wheels; torque-vectoring control can regulate each motor separately.

BYD quoted DC charging at up to 110 kW for the U8 Premium Edition, enabling about 30–80% in 18 minutes.

The U8 Premium Edition uses the DiSus-P intelligent hydraulic body-control system to actively manage body position and movement.

The e4 system can control each wheel's torque to help maintain U8 stability even during a sudden tire-pressure loss.

Independent control of all four wheels allows the U8 to perform a near-on-the-spot rotation that the manufacturer calls an all-terrain tank turn.