How do I increase fuel efficiency in my BMW X2?

I recently purchased a BMW X2 and I've noticed that it's not getting the advertised fuel efficiency. What can I do to improve it?

First, make sure you are keeping up with regular maintenance such as oil changes and tire rotations. This can greatly affect fuel efficiency.

Additionally, check your tire pressure regularly. Under-inflated tires can decrease fuel efficiency.

Avoid excessive idling and aggressive driving. These can both negatively impact your fuel efficiency.