How can I improve my Nissan Qashqai's fuel efficiency?

I've been noticing that my Nissan Qashqai's fuel consumption has been higher than expected. I've tried driving at a steady speed and practicing smooth acceleration, but it doesn't seem to make a significant difference. What else can I do to improve my fuel efficiency?

One thing you can do is to regularly check and replace your air filter. A dirty air filter can greatly affect your fuel efficiency. You should also make sure your tires are properly inflated, as under-inflated tires require more energy to move and can decrease your fuel economy.