Before you head out on a long road trip this summer, consider having these car parts replaced to improve your vehicles fuel efficiency.

Mass air flow sensor: If dirty, it sends inaccurate information about the air flow entering the engine, affecting fuel efficiency.

Oxygen sensor: Monitors the exhaust flow which adjusts the fuel injection level. After 100,000 miles the accuracy of this part could be compromised.

Spark plugs: The air/fuel mixture is important to your engine running cleanly and efficiently. New spark plugs result in a cleaner running engine, increasing fuel efficiency.

Air filter: Dirty air filters are unable to filter the air coming into your engine, resulting in lower fuel efficiency. These should be replaced on cars over 10 years old.

Tires: Worn, misaligned or deflated tires can reduce gas mileage. Check air pressure regularly and replace worn tires.

Source: Bankrate.com