Made of steel or aluminium, the driveshaft is a key component of the drive-train mechanism, which is a complex part of the car. The driveshaft is subject to intense pressure and movement, and is required to strike a balance between strength (to bear the torque load) and inertia (caused by too much weight). Over time, the driveshaft can deteriorate. Damage to the driveshaft can also be caused by external factors, such as kerb collisions, or by a malfunctioning CV (constant velocity) axle joint (probably the result of a damaged CV boot that protects the joint) – so it’s essential to maintain these joints and their coverings. Indicators of driveshaft failure include: strange noises such as squeaking, rattling or clunking; intense vibrations, shaking or juddering, especially in the floor; and resistance in the wheels, most commonly whilst turning or parking. If you notice any of these signs don’t put off checking them out or the damage will be more expensive to repair in the long run.