Many possible factors can lead to poor gas mileage, including driving faster and more aggressively, which both cause the engine to require more fuel to perform less work. In addition to driving habits, using certairn vehicle accessories and features, such as air conditioning, worsens gas mileage by putting additional strain on the engine.Know More
Aside from driving habits, there are a few mechanical problems that affect gas mileage. Bad oxygen sensors and clogged air filters are the most common mechanical causes of bad gas mileage. A clogged air filter reduces the flow of fresh air to the engine, which causes the engine to work harder. The oxygen sensor is responsible for regulating the air and fuel. If it is malfunctioning, it can have a similar effect on the engine.
A malfunctioning fuel injector can also have a significant effect on gas mileage. The fuel injector is responsible for distributing oil, so a leak or malfunction can significantly impact gas mileage. This problem can also cause the engine to perform poorly, which also affects gas mileage. Misfiring spark plugs also contribute to decreasing gas efficiency. Like many other parts, spark plugs that are not working correctly negatively affect the performance of the engine.Learn more in Car Parts & Maintenance
U.S. Department of Energy suggestions for increasing gas mileage include proper car maintenance, using efficient driving methods, organizing trips in advance and purchasing a fuel-efficient vehicle, such as a hybrid or electric vehicle. Choice of vehicle is a major factor that contributes to fuel efficiency.Full Answer >
Increase gas mileage by moderating driving habits and keeping tire pressure and alignment in order. Taken together, these changes increase fuel mileage by up to 20 percent.Full Answer >
A Flowmaster exhaust does improve gas mileage. This type of exhaust improves engine efficiency by taking away most of the restriction caused by a factory exhaust. Manufacturers produce standard mufflers to be more restrictive to make cars quieter. Restrictive exhausts also decrease horsepower.Full Answer >
As a general rule, putting a lift kit and bigger tires on a truck will decrease its gas mileage. There are, however, some ways to mitigate this.Full Answer >