What is the reason for engine misfire in a Ford S-Max?

I own a Ford S-Max and recently I've been noticing a rough idle and a slight loss of power. After running some diagnostics, it shows that there is a random misfire in one of the cylinders. How can I fix this issue and prevent it from happening again?

A common cause of engine misfires in Ford S-Max is a faulty ignition coil. I recommend checking and possibly replacing all ignition coils to ensure proper spark in all cylinders.

Another possible cause of misfire could be a clogged fuel injector. I suggest using a fuel injector cleaner and regularly performing a fuel system flush to prevent this issue in the future.

In some cases, a misfire can also be caused by a faulty mass air flow sensor. Cleaning or replacing the sensor should help improve engine performance and prevent the issue from reoccurring.