How can I ensure my Vauxhall Vivaro's engine runs smoothly?

I've noticed that my Vauxhall Vivaro's engine seems to be running a bit rough lately. I want to make sure it stays in good condition and doesn't lead to any major issues. Any tips or advice for keeping the engine running smoothly?

Regularly check and change the oil to keep the engine lubricated and running smoothly.

Clean or replace the air filter to ensure proper air flow and prevent the engine from working too hard.

Have a mechanic inspect the spark plugs to make sure they are not worn or damaged, which can affect the engine's performance.