New car released at the 2021 Guangzhou Auto Show: BMW i4 appears with 0-100km/h acceleration time of 3.9 seconds.

The new car is the first pure electric product created by BMW M department, with its exterior design language largely based on the BMW i4, featuring carbon fiber accents. The car measures 4785/1852/1856mm in length, width, and height, respectively, with a wheelbase of 2856mm, and the aerodynamic coefficient is as low as 0.24cd.

Electric Drive and Acceleration

The i4 features BMW’s fifth-generation eDrive electric drive technology, with Hair-pin flat wire winding rotors. The maximum power of the i4 eDrive40, which utilizes a single-motor rear-drive system, is 250 kW, with a maximum torque of 430 N·m and a 0-100 km/h acceleration time of 5.7 seconds.

The i4 M50, which features dual-motor all-wheel drive system, has a maximum power of 400 kW, maximum output of 536 horsepower, maximum torque of 795 N·m, and 0-100 km/h acceleration time of 3.9 seconds.

Battery and Range

The i4 is equipped with a large battery with a total capacity of 83.9kWh and a heat pump air conditioning system, enabling the i4 eDrive40 to achieve a WLTP range of 590 km and the i4 M50 to achieve a range of 510 km. The thickness of the i4’s battery pack is only 110mm, reducing its impact on the vehicle’s overall thickness. In addition, thanks to the low center of gravity provided by the battery pack, the i4’s center of gravity is 53mm lower than that of the BMW 3 Series sedan.

Charging

The i4 series supports a maximum DC fast charging rate of 200 kW, allowing the i4 M50 to add 164 km of range and the i4 eDrive40 to add 140 km of range in just 10 minutes of charging at certain welladapted stations. The vehicle can also be charged with up to 11 kW of AC power.

As the first high-performance model of the i series, the i4 M50 has been enhanced in many ways to boost its performance. The weight distribution ratio of the front and rear axles is 48.2:51.8, and the center of gravity has been lowered by 37 mm.

The front motor has a power of 190 kW, the rear motor has a power of 230 kW, and the maximum kinetic energy recovery power of the vehicle at a speed of 225 km/h is 195 kW.The tire options are 255/35 R20 for the front and 285/30 R20 for the rear. The overall width of the vehicle is increased by 26mm in the front and 12mm in the rear.

The i4 M50 features the M suspension system with VDC variable damping shock absorbers in addition to the original system, and the rear axle is equipped with air suspension. The front suspension has an anti-roll bar and tower top reinforcement, while the rear axle also has a reinforcement bar to improve rigidity, and the vehicle has a variable steering ratio.

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This article is a translation by ChatGPT of a Chinese report from 42HOW. If you have any questions about it, please email bd@42how.com.