What Suspension System Does the BMW 3 Series Use?
2 Answers
The BMW 3 Series utilizes a double-joint spring strut front axle and a multi-link independent suspension system. The suspension system refers to all the force-transmitting connection devices between the car's frame and the axle or wheels. Its function is to transmit forces and torque between the wheels and the frame, buffer the impact from uneven road surfaces transmitted to the frame or body, and dampen the resulting vibrations to ensure smooth driving. In terms of power, the BMW 3 Series is equipped with a 2.0T turbocharged engine, delivering a maximum power of 115 kW and a maximum torque of 250 Nm, paired with an 8-speed automatic transmission.
Most BMW 3 Series models feature a MacPherson strut front suspension, which is simple, practical, cost-effective, and compact, making it ideal for front-engine layouts. The rear suspension employs a multi-link design that independently controls each wheel's movement, enhancing stability and vibration absorption. The latest G20 generation 3 Series base models retain this setup, but sportier versions like the M340i come with adjustable damping suspension. The adaptive system automatically adjusts stiffness: in Comfort mode, it absorbs bumps smoothly, while in Sport mode, it increases support for better cornering stability. The overall tuning balances handling and comfort, ensuring a smooth city drive and spirited track performance. However, the MacPherson front suspension slightly lags behind double-wishbone designs in extreme roll control, though BMW engineers have compensated by optimizing chassis rigidity. In summary, this suspension system keeps the 3 Series agile and reliable, earning praise for years—just remember to check for worn bushings during maintenance.
