Regular Maintenance - Air Filter, Spark Plugs, Oil Changes, and Alignment
This should be a no-brainer but life happens and our vehicle maintenance sometimes takes a backseat. Engines take in over 10 million gallons of air through the filter every year and on older vehicles, this can really affect your fuel usage. Check your filter when you change your oil and be sure to replace it at least once a year.
Spark plugs have a lifecycle and not replacing them in time can cost you wasted fuel each year. For example, if your spark plugs are 80,000 miles into their 100,000-mile lifespan, they are 80% worn and it would be a good time to replace them before they become inefficient. 100,000 miles might be generous so check your vehicle for the exact intervals you should be checking for replacement plugs.
Oil change and alignment should be checked regularly. Everyone knows that they need an oil change regularly but make sure you are also using the recommended oil for your vehicle - this will help you save on gas. Tire alignment could cost you more than you think, if your tires are dragging sideways, the tires are working harder and you are losing gas mileage.