How do I get the best fuel economy in my BMW 3 Series?

I am wondering what the best practices are for getting the most out of my fuel in my BMW 3 Series. Some friends have suggested different techniques, but I'm not sure which one is the most effective. Any advice would be greatly appreciated!

Another tip for achieving better fuel efficiency in your BMW 3 Series is to regularly check and maintain your tire pressure. Under-inflated tires can decrease fuel economy by up to 3%, so make sure to keep them properly inflated.

One of the best ways to improve fuel economy in your BMW 3 Series is to practice smooth and consistent driving. This means avoiding aggressive acceleration and braking, and maintaining a steady speed on the highway.