8. Get the Junk Out of Your Trunk
Excess weight, it’s not just the enemy of your swimsuit, it’s also detrimental to fuel efficiency. It’s why small, light cars are more economical than massive SUVs with knobby tires and the aerodynamics of a mountain range.
One way to save fuel is to get the junk out of your trunk, the crap out of your hatch, the belongings out of your bed, etc. Extra weight does neither you nor your vehicle any favors, so quit living like a vagrant. Your wallet/bank account/retirement fund will thank you.