There are many reasons why your engine mounts may need replacing, The Main reasons are the following :

1.Incorrect installation of the mounts

Although you can install engine mounts by yourself, we still recommend taking your vehicle to a reputable and qualified engineer as soon as you notice any signs your engine mounts need replacing. This ensures that your new fittings will be installed properly and last longer.

2. Ageing and wearing overtime 

A common cause of engine mount failure is age and wear. Engine mounts are typically made of rubber, a material that is prone to wear over time and may lose its elasticity and, as a result, lessen its function to your engine. Age and stress can cause small cracks in fluid-filled engine mounts that can lead to leaks. As soon as you notice this has happened, made obvious by increased vibration and engine mount noise, you should replace your worn engine mount.

3. Driving techniques that can damage the vehicle’s parts

Over-revving the gears and improper use of the clutch can cause serious damage to your engine mounts. Practising proper driving techniques will extend the lifespan of your engine mounts and other vehicle components.

4. Accident involvement which has caused damage or moved the mounts

If you’ve been involved in an accident, you should always check for internal damage, such as engine mount failure, as well as superficial damage. Similarly, make sure you’re aware of a car’s road history before buying a new car and getting the right checks put in place before taking the vehicle to the road. Taking these precautions will help keep the machine operator safe.

5. Fluid leaks onto the mounts

If you notice any leaks in your motor, you should take your car for a service to fix the leak, and any other damage caused, no matter what the substance. For example, engine oil could cause the rubber to soften, leading to engine mount failure.