How to troubleshoot a misfiring engine in a Ford S-Max?

I've been experiencing issues with my Ford S-Max's engine, with it misfiring and causing reduced performance. What could be the cause of this issue and how can I fix it?

One possible cause of a misfiring engine in a Ford S-Max is faulty spark plugs. It's important to check and replace them if needed. Make sure to use genuine Ford spark plugs for best results.

Another potential cause could be a clogged fuel filter. This can restrict the flow of fuel to the engine, causing misfiring. Regularly replacing the fuel filter according to Ford's recommended maintenance schedule can help prevent this issue.

A malfunctioning ignition coil can also lead to a misfiring engine. If the ignition coil is faulty, it may need to be replaced. Consult a professional mechanic for proper diagnosis and replacement if needed.