Car struts are a key component of your vehicle's suspension system. You'll find them on each wheel, typically at the front, but some vehicles have them on all four corners. A strut is a single, compact unit that combines a shock absorber and a spring. Its main job is to support the vehicle's weight, dampen bumps, and help maintain tire contact with the road.
To locate them, look for the tallest, most vertical component behind each wheel. They are usually cylindrical, made of metal, and have a large coil spring wrapped around them. The top of the strut is connected to the vehicle's frame inside the engine bay or wheel well, often under a rubber cover.
Understanding the difference between struts and simpler shock absorbers is important. While both control spring movement, a strut is a structural part of the suspension, meaning it helps position the wheel and supports the vehicle's weight. A shock absorber only handles the damping function. This is why a worn-out strut can affect wheel alignment and is generally more complex to replace.
The performance of your struts directly impacts ride quality, handling, and safety. Worn struts can lead to excessive bouncing, nose-diving during braking, uneven tire wear, and reduced control in corners. For most drivers, checking the struts involves looking for oil leaks on the strut body, listening for clunking noises over bumps, and observing the vehicle's behavior on the road.
The following table compares strut types found in different vehicles:
| Vehicle Type / Strut Design | Common Characteristics | Typical Replacement Cost Range (Parts & Labor) | Key Performance Focus |
|---|
| Standard Sedan/SUV (MacPherson Strut) | Most common design; balances cost, space, and comfort. | $300 - $600 per strut | Ride comfort, predictable handling |
| Performance/Sports Car | Firmer damping; often part of a more complex multi-link system. | $500 - $1,000+ per strut | Sharp handling, minimal body roll |
| Heavy-Duty Truck/SUV | Robust construction to handle higher loads and off-road use. | $400 - $800 per strut | Durability, load leveling, off-road control |
| Air Strut (Luxury/Adjustable Vehicles) | Uses pressurized air instead of a metal spring; allows for adjustable ride height. | $800 - $1,500+ per strut | Luxury ride, self-leveling, adjustable clearance |
| Electronic/Damping Adjustment | Allows driver to select different ride modes (Comfort, Sport, etc.). | $700 - $2,000+ per strut | Customizable ride and handling |
