Just developed a fault today - symptoms are:

- a vibration, almost a shaking, of the engine (bonnet open) when stationary;
- the vibration comes through the pedals and the steering wheel;
- worst at low speeds and setting off;
- a tapping sound from the bonnet when driving at all speeds;
- it feels like the level of vibration reduces after a while, but that could be wishful thinking;
- no loss of power;
- no warning lights;

Having trawled the forum and google, it sounds like it could be anything from the dual mass flywheel, the entire engine, the timing belt (which I have just had replaced).

Before the obligatory trip to get fleeced, does anyone have any suggestions of what the problem is?