With fuel prices on the rise, efficient gas mileage is more important than ever. Getting the most out of a tank of gas largely depends on following a few key auto maintenance tips. Failure to take care of your car's needs not only results in low fuel efficiency, but could also result in an unexpected trip to the mechanic. Here are four main reasons your gas mileage may be decreasing.

Top Reasons for Poor Gas Mileage

1. Faulty Fuel Injector

Fuel injectors that are clogged or damaged negatively impact a car's gas mileage. Fuel injectors spray fuel into a vehicle's engine cylinders and precision is needed for proper combustion. When the mechanism becomes dirty or broken, the optimal level of fuel may not reach the engine, resulting in getting less miles per gallon. In some cases, simply cleaning off the fuel injector resolves the issue. Damaged components may need to be replaced. 

2. Faulty Oxygen Sensor

An oxygen sensor works to measure the levels of exhaust gas coming from the engine. It then sends the data to your car's computer, which adjusts the fuel levels accordingly. When an oxygen sensor isn't working properly, it won't be able to properly read data, causing your engine to burn an excess amount of fuel. When this sensor malfunctions, it usually also triggers the check engine light, meaning it should be addressed immediately.

3. Wrong Oil

Many drivers believe that using thicker oil is more beneficial, but using the wrong oil can cause serious damage to your vehicle. Oil that is too thick could lead to increased resistance within engine parts, which could lead to poor gas mileage. Always use the type of oil recommended in your vehicle's owner's manual. 

4. Low Tire Pressure

Maintaining optimal tire pressure is one of the fundamentals of auto maintenance. Not only does low tire pressure increase the risk of a blowout, it also reduces gas mileage. If your car is equipped with an automatic tire pressure sensor, don't ignore the alert system and fill your tires as soon as you are able. Check your tire pressure at least once a month to make sure levels are adequate.

If you're in need of routine auto maintenance or repairs, contact the experts at Griff's Auto Service in Rochester, NY. This family-owned and -operated auto repair service has been serving northwest New York for over 30 years. They also offer 24/7 roadside assistance to help you in an emergency. For more information, visit them online or call (585) 227-8700 to make an appointment.