Hi, Im almost certain it will be the suspension top mount. If you pop the bonnet, and look in the top right hand corner where the plastic grill is (right at the bottom of the windscreen). Look through the grill and you will see the suspension turret top mount. They're pretty straight forward to replace. You can remove the plastic trim to get to the top strut mounting bolts. Then you need to remove the 2 mounting bolts that hold the strut to the hub carrier, disconnect the drop link and then remove the whole strut from the car. Safely compress the spring using spring compressors and remove the top mount. Obviously safety is critical here, as compressing suspension springs can be VERY dangerous, so if you haven't done it before, its best to take it to a garage. I replaced the top mount on mine a while ago and it was around £55 for the parts. Hope that helps, Alan