What is a common defect in suspension systems?

A common defect in suspension systems is missing or broken leaf springs. Leaf springs are critical components in a vehicle's suspension system, providing support and maintaining ride height. When leaf springs are damaged or absent, it can lead to decreased stability, poor handling, and unsafe driving conditions. This situation can also cause uneven tire wear, increased stress on other suspension components, and can even affect the vehicle's braking performance.

In contrast, while leaking hydraulic fluid can be an issue, it is more often associated with hydraulic systems rather than directly indicating a suspension problem. A cracked gear box is typically a concern related to the transmission or steering system, not suspension. Loose electrical connections may affect vehicle electronics but do not impact the suspension system's performance or integrity. Each of these alternatives pertains to different systems within a vehicle, further emphasizing the importance of identifying leaf springs as a key aspect of suspension maintenance.