It’s also possible for spark plugs to fail internally, if their electrical components stop working. When this happens, there ...

Spark plugs are one of those mechanical components that can easily be forgotten about, but they do need to be changed at some point. Here's how often.

If your car is older, if and when you need to change your spark plugs will largely depend on how your car is behaving. If a car has a bad spark plug, it'll usually let you know pretty quickly.