Replace 5 car parts for better gas mileage

If you’re unhappy with how much you are spending on gas, you may be able to save money by simply replacing car parts. AutoPartsWarehouse.com recently looked at car parts that can improve gas mileage and picked the top five. You can purchase them online and save on a mechanic’s charge by doing it yourself.

All text by Tara Baukus Mello, Bankrate.com contributor

Mass air flow sensor

Function: It monitors exhaust flow before and after the catalytic converter, sending the data to the engine computer, which adjusts the fuel injection level. When it is faulty, the data aren’t accurate. It’s best to replace the sensor on cars with more than 100,000 miles.

DIY Difficulty: Easy

Oxygen sensor

Function: It monitors exhaust flow before and after the catalytic converter, sending the data to the engine computer, which adjusts the fuel injection level. When it is faulty, the data aren’t accurate. It’s best to replace the sensor on cars with more than 100,000 miles.

DIY Difficulty: Moderate

Spark plugs

Function: The spark plugs ignite the air/fuel mixture in the engine combustion chamber. New spark plugs result in the engine running cleaner and more efficiently.

DIY Difficulty: Moderate

Air filter

Function: It filters the air coming into the engine. Dirty filters reduce gas mileage, especially on cars that are 10 years or older.

DIY Difficulty: Easy

Tires

Function: Tires provide traction and handling for the car. Tires that are worn, out of alignment or underinflated can reduce fuel economy. Because tires naturally lose air, check pressure monthly to ensure optimum gas mileage and handling. It will also help the tires last longer.

DIY Difficulty: Easy