How do I know if my Vauxhall Zafira Life's spark plugs need to be replaced?

I have a Vauxhall Zafira Life and I'm wondering if it's time to replace the spark plugs. How can I tell if they're worn out and need to be replaced?

One way to know if your spark plugs need to be replaced is to check the color and condition of the spark plug. If they're black or covered in carbon buildup, they need to be replaced.

Another sign that your spark plugs need to be replaced is if your car is experiencing misfires or failing to start. This could be a sign that the spark plugs are faulty or worn out.

I recommend checking your owner's manual for the recommended maintenance schedule for your specific Vauxhall Zafira Life model. This will give you a better idea of when the spark plugs should be replaced.