What are the most common maintenance concerns for a Ford Fiesta?

I just purchased a used Ford Fiesta and want to make sure I stay on top of maintenance. What are the most important things I should keep an eye on and when should I schedule maintenance check-ups?

Regular oil changes are essential to keep your engine running smoothly. Check your owner's manual for the recommended interval, but a good rule of thumb is every 5,000 miles.

Pay attention to your tire pressure and tread depth. Low tire pressure can decrease your fuel efficiency and worn tires can be dangerous to drive on.