When should I replace my BMW X3's spark plugs?

I noticed that my BMW X3 isn't performing as well as it used to. Could it be because of the spark plugs?

Yes, it is possible that your spark plugs need to be replaced. Depending on the age and mileage of your BMW X3, it is recommended to replace them every 60,000 - 100,000 miles.

Another possibility is that your spark plugs are just dirty and need to be cleaned. Try using a spark plug cleaner to see if it improves your BMW X3's performance.

In addition to mileage, it's important to pay attention to any warning signs such as difficulty starting the engine or decreased fuel efficiency. These can indicate that it's time to replace your BMW X3's spark plugs.