How often should I change the spark plugs on my Ford Puma?

I recently purchased a used Ford Puma and was wondering how often I should change the spark plugs. I've heard conflicting information and want to make sure I'm taking good care of my car.

As a general rule of thumb, it's recommended to replace your spark plugs every 30,000 miles or every 3-5 years, whichever comes first. However, it's always best to consult your vehicle's manual for specific guidelines.

If you notice any issues such as rough idling, difficulty starting your car, or a decrease in fuel efficiency, it may be time to change your spark plugs. Again, refer to your manual for specific recommendations.