How can I improve the fuel efficiency of my Vauxhall Astra's engine?

I've noticed that my Vauxhall Astra's engine is not as fuel-efficient as it used to be. What steps can I take to improve its efficiency and save on fuel costs?

Regularly checking and replacing the air filter in your Vauxhall Astra can greatly improve its fuel efficiency. Make sure to follow the manufacturer's recommended schedule for filter replacements.

Driving at a constant speed and avoiding frequent acceleration and deceleration can also help improve fuel efficiency. Try to maintain a steady pace when on the road.

Using a fuel injector cleaner can also help improve your Vauxhall Astra's fuel efficiency. Just make sure to follow the instructions on the product label for proper usage.

Regular maintenance, such as oil changes and tune-ups, can also play a big role in improving the fuel efficiency of your Vauxhall Astra.