What should I do if my Vauxhall Crossland has a rough idle?

My Vauxhall Crossland has been idling roughly lately. It feels shaky and unstable when I come to a stop. What could be causing this issue?

It is likely that your air filter needs to be replaced. A dirty air filter can restrict air flow to the engine, causing it to idle roughly. Replace your air filter every 15,000 miles or as recommended by your owner's manual. Make sure to use a high quality air filter for best results.

Check your spark plugs. Worn out or dirty spark plugs can also cause a rough idle. Replace them if necessary. It is also a good idea to check your spark plug wires and replace them if they are worn out.

You may have a vacuum leak. This can happen if a hose or gasket is cracked or loose. Check all hoses and connections around the engine for leaks and repair or replace as needed.

Your fuel injectors may need to be cleaned. Dirty fuel injectors can cause an uneven fuel distribution, resulting in a rough idle. Use a fuel injector cleaner to clean them and see if that improves the idle.

If none of these solutions work, it could be a bigger issue with your engine. It is best to take your car to a mechanic for a diagnostic test to determine the exact cause of the rough idle.