What is the correct engine idle speed for a vauxhall vectra -year 2004?

The correct engine idle speed for a 2004 Vauxhall Vectra is typically around 750 RPM for gasoline engines and approximately 800 RPM for diesel engines. However, it's always best to consult the owner's manual or service documentation for the specific model and engine variant to confirm the exact specifications. Proper idle speed is crucial for engine performance and efficiency.