Why is my Ford Fiesta's engine making a rattling noise?

I've noticed that my Ford Fiesta's engine has started making a strange rattling noise when I accelerate. It only seems to happen when the engine is cold and goes away when it warms up. Should I be concerned about this noise? What could be causing it?

It's possible that the rattling noise is coming from a loose component in the engine, such as a heat shield or exhaust clamp. I would recommend taking your car to a mechanic to have it inspected.

Another possible cause could be a malfunctioning engine mount. This can cause the engine to vibrate more than usual, resulting in a rattling noise. It's important to have this checked out as well, as a faulty engine mount can lead to other issues.