How to increase the fuel efficiency of my Ford Mondeo?

I recently purchased a Ford Mondeo and have noticed that the fuel efficiency is not as good as I expected. Is there anything I can do to improve it? What are some tips I can follow to increase the fuel efficiency and save money in the long run?

One tip is to keep your tires properly inflated. Under-inflated tires can decrease fuel efficiency by up to 3%.

Another tip is to avoid unnecessary idling. Turn off your engine if you're going to be stopped for more than 30 seconds. This can save you up to a gallon of gasoline per hour.

Regular maintenance, such as changing the air filter, can also improve fuel efficiency. A clogged air filter can decrease your mileage by up to 10%.