What are the reasons for the instability of Wuling Hongguang S at high speeds?

[StCayden]

Wuling Hongguang S is unstable at high speeds because: the car has a relatively high chassis, and more air passes under the chassis, creating turbulence beneath the chassis, which reduces stability. Taking the 2020 Wuling Hongguang S as an example, it is a microvan with body dimensions of: length 4390mm, width 1660mm, height 1750mm, a wheelbase of 2720mm, a fuel tank capacity of 50l, and a curb weight of 1185kg. The 2020 Wuling Hongguang S features a MacPherson strut front suspension and a leaf spring non-independent rear suspension. It is equipped with a 1.2L naturally aspirated engine, producing a maximum horsepower of 76ps, a maximum power of 56kw, and a maximum torque of 110nm, paired with a 5-speed manual transmission.