Why is my Ford Fiesta engine making a knocking noise?

I recently purchased a Ford Fiesta and have noticed that the engine makes a knocking noise, especially when accelerating. What could be causing this issue and what steps should I take to address it?

The knocking noise could be a sign of low oil pressure or worn engine bearings. It is best to take your car to a trusted mechanic for a proper diagnosis and repair.

It is possible that the knocking noise is caused by a faulty spark plug or ignition coil. Have a professional inspect these components to determine if they need to be replaced.

If you recently had your oil changed, the incorrect oil weight could be causing the knocking noise. Check your owner's manual for the recommended oil weight and have it changed if necessary.