Why does my Ford Fiesta's engine make a knocking noise?

I recently bought a used Ford Fiesta and I noticed that the engine makes a knocking noise when I accelerate. Is this normal or is there something wrong with my car's engine?

It is not normal for a Ford Fiesta's engine to make a knocking noise. This could be a sign of engine damage and should be checked by a mechanic.

I also own a Ford Fiesta and mine makes a similar noise. However, I had it checked by a mechanic and they said it's just the engine's design. It's best to get it checked just in case.

I had the same issue with my Ford Fiesta and it turned out to be a problem with the spark plugs. I would recommend getting them replaced as soon as possible.