Suspension types, how they work, and the differences between ICE, hybrid and electric cars
The suspension connects the wheels to the body, keeps them in constant contact with the road, and absorbs shocks from bumps. The springing element (a coil spring or an air bag) absorbs impact energy, the damper controls the resulting oscillation, and the control arms define the wheel's path and hold its geometry — camber, toe and track. The design of these parts differs by suspension type, and the loads they carry depend on the car's weight and balance, which is why heavy electric cars are tuned quite differently from lighter ICE cars.
From a simple dependent beam to multi-link and air suspension systems
The strut combines the damper and the spring in a single unit that also forms part of the wheel's steering knuckle. The most common front suspension thanks to its simplicity, compactness and low production cost.
Components
Each wheel is mounted on several independent links, each controlling its own geometry parameter — camber, toe, or longitudinal position. Delivers better handling and comfort, often used on the rear axle.
Components
The wheel is held by two triangular arms — upper and lower — giving precise control over camber and very accurate handling. Common on sports and premium cars.
Components
Both wheels of an axle are joined by a semi-independent beam that twists slightly as the wheels move independently. A simple, compact and inexpensive design — typical for the rear axle of budget cars.
Components
A rubber-and-fabric air bag replaces the steel spring and is inflated by a compressor. Lets you adjust ride stiffness and ground clearance, compensate for load, and reduce drag at higher speeds.
Components
The architecture is similar, but tuning and packaging differ significantly
Moderate, predictable weight allows for lighter springs and dampers. Budget models often use an inexpensive torsion beam at the rear, and packaging has to leave room for the exhaust system and driveshaft.
The added weight of the traction battery and electric motor calls for slightly stiffer springs and reinforced dampers. Rear suspension packaging is often reworked to make room for a battery under the floor or seats.
A heavy battery pack meaningfully increases the car's weight, so springs and dampers are made to absorb more energy and the arms are reinforced. At the same time, the low center of gravity from a floor-mounted battery improves stability. The absence of a transmission tunnel frees up space for multi-link suspension even in mainstream models, and air suspension is offered more often — it compensates for the load and can lower ride height at speed to save range.
The core elements shared by most suspension types
Click a node to see its description in the cards below
The springing element that absorbs impact energy from bumps and supports the weight of the body.
Damps the spring's oscillation after an impact by pumping oil or gas through valves inside a cylinder — without it, the body would keep bouncing after every bump.
Connect the wheel to the body and define its path of motion, keeping camber, toe and track within the intended range.
An elastic bar linking the left and right wheels of an axle. When the body leans in a turn, it twists and pulls up the opposite wheel, reducing body roll.
Movable connections between the arms, the strut and the body that allow the necessary suspension travel while damping vibration.
An intermediate frame that carries the suspension and powertrain — it reduces vibration transfer to the body and simplifies vehicle assembly.