How do I know if my Ford Focus needs a tune-up?

I recently bought a used Ford Focus and I'm not sure when it was last serviced. How can I tell if my car needs a tune-up?

It's a good idea to get a tune-up if you're not sure about the state of your car. Find a trustworthy mechanic and have them run a diagnostic test to see if any components need to be replaced.

There are a few signs that could indicate your car needs a tune-up, such as a decrease in fuel efficiency or difficulty starting the engine. If you notice these issues, it's best to get it checked out.