What is the most efficient way to maintain the engine of a Kia Sportage?

My Kia Sportage's engine seems to be running rough lately. What steps should I take to ensure it is running at its best?

Regularly check and change the oil as recommended by the manufacturer. This will ensure that the engine is properly lubricated and running smoothly.

Keep an eye on your coolant levels and make sure to top up if necessary. Overheating can cause damage to the engine.

Check and replace any worn or damaged spark plugs. These can greatly affect the performance of your engine.

Consider using higher quality fuel or adding a fuel system cleaner to improve engine performance.