Learn about the factors that affect gas prices, the current gas prices in the United States, how to calculate gas costs, and tips for saving on gas costs in our comprehensive guide on how much per gallon of gas.
Gas prices have always been a topic of interest for many Americans. From the cost of fueling up for a road trip to the impact of gas prices on the economy, there are plenty of reasons why people want to know how much per gallon of gas they can expect to pay. In this article, we will explore the factors that affect gas prices, the current gas prices in the United States, how to calculate gas costs, and tips for saving on gas costs.
Factors That Affect Gas Prices

Calculating the cost of a full tank of gas
The cost of gas per gallon is influenced by many factors. Understanding these factors can help you make better decisions about when and where to fill up your tank. Here are some of the most significant factors that affect gas prices:
Global Oil Supply and Demand
The price of crude oil is the most significant factor that determines gas prices. The Organization of Petroleum Exporting Countries (OPEC) controls about 40% of the world’s oil supply and can influence the price of oil by adjusting production levels. Other factors that can impact oil supply and demand include geopolitical tensions, natural disasters, and changes in economic growth.
Political Factors
Political factors can also have a significant impact on gas prices. For example, the United States government may impose sanctions on countries that are major oil producers, leading to higher prices. Changes in government policy, such as tax increases or incentives for alternative fuels, can also influence the demand for gas and the cost per gallon.
Stay tuned for the following sections to learn about more factors that affect gas prices and how they impact the cost per gallon.
Current Gas Prices in the United States

Driving on fumes and searching for affordable gas
The cost of gas per gallon varies across the United States. According to AAA, the national average for regular gasoline as of September 2021 is $3.18 per gallon. However, prices can be much higher or lower depending on where you live.
Average Gas Prices by State
Gas prices can vary significantly by state due to differences in taxes, transportation costs, and other factors. As of September 2021, California had the highest average gas price at $4.39 per gallon, while Mississippi had the lowest average gas price at $2.73 per gallon.
Comparison of Current Gas Prices to Previous Years
Over the past decade, gas prices in the United States have fluctuated significantly. In 2011, the national average gas price was $3.53 per gallon, while in 2016, it dropped to $2.14 per gallon. However, prices have been steadily increasing over the past few years, with the national average reaching $3.18 per gallon in September 2021.
Stay tuned for the next sections to learn how to calculate gas costs and tips for saving on gas costs.
Current Gas Prices in the United States
Not only do gas prices vary by state, but there can also be significant regional differences within states. For example, gas prices in urban areas tend to be higher than in rural areas due to increased transportation costs.
Regional Differences in Gas Prices
Gas prices can also vary by region due to differences in supply and demand. For example, the West Coast tends to have higher gas prices due to strict environmental regulations and limited refinery capacity. In contrast, the Gulf Coast has lower gas prices due to its proximity to major refineries.
How to Calculate Gas Costs
Calculating gas costs can help you budget for road trips and plan your daily commute. There are several methods you can use to calculate gas costs, including:
Using Fuel Economy and Distance Traveled
One way to calculate gas costs is to use your vehicle’s fuel economy and the distance you plan to travel. To do this, you will need to know your vehicle’s miles per gallon (MPG) rating and the distance you plan to travel.
For example, if your vehicle gets 25 MPG and you plan to travel 500 miles, you will need 20 gallons of gas (500 miles ÷ 25 MPG = 20 gallons). If the current gas price is $3.18 per gallon, your total gas cost would be $63.60 (20 gallons x $3.18 per gallon).
Using Gas Prices and Distance Traveled
Another way to calculate gas costs is to use the current gas price and the distance you plan to travel. To do this, you will need to estimate how many gallons of gas you will need based on the distance you plan to travel.
For example, if you plan to travel 500 miles and estimate that your vehicle gets 20 MPG, you will need 25 gallons of gas (500 miles ÷ 20 MPG = 25 gallons). If the current gas price is $3.18 per gallon, your total gas cost would be $79.50 (25 gallons x $3.18 per gallon).
Using Gas Prices and Fuel Economy
Finally, you can also calculate gas costs by combining your vehicle’s fuel economy and the current gas price. To do this, you will need to know your vehicle’s MPG rating and the current gas price.
For example, if your vehicle gets 25 MPG and the current gas price is $3.18 per gallon, your cost per mile would be approximately $0.127 (25 MPG ÷ $3.18 per gallon = $0.127 per mile). If you plan to travel 500 miles, your total gas cost would be $63.50 (500 miles x $0.127 per mile).
Stay tuned for the next section to learn about tips for saving on gas costs.
Tips for Saving on Gas Costs
Gas prices may be out of your control, but there are things you can do to reduce your fuel consumption and save money. Here are some tips for saving on gas costs:
Driving Techniques to Improve Fuel Efficiency
Your driving habits can significantly impact your gas mileage. By following these tips, you can reduce your fuel consumption and save money:
- Accelerate and brake gently: Sudden stops and starts waste gas.
- Maintain a steady speed: Avoid speeding up and slowing down unnecessarily.
- Use cruise control: This can help you maintain a consistent speed on the highway.
- Avoid idling: Turn off the engine if you’re parked or stuck in traffic for an extended period.
- Use air conditioning sparingly: Air conditioning can reduce your fuel efficiency, especially at low speeds.
Vehicle Maintenance to Improve Fuel Efficiency
Regular vehicle maintenance can help your car run more efficiently, which can save you money on gas. Here are some maintenance tasks you should prioritize:
- Keep your tires properly inflated: Underinflated tires can reduce your gas mileage by up to 3%.
- Change your air filter: A dirty air filter can reduce your fuel efficiency by up to 10%.
- Get regular tune-ups: Properly maintained cars can improve gas mileage by up to 4%.
- Use the recommended oil: Using the manufacturer’s recommended oil can improve your gas mileage by up to 2%.
Alternative Transportation Options
Finally, consider alternative transportation options to reduce your reliance on gas-powered vehicles. Here are some options to consider:
- Public transportation: Buses, trains, and subways can be more affordable and eco-friendly than driving.
- Carpooling: Sharing a ride with friends or coworkers can reduce your fuel costs.
- Biking or walking: Short trips can be made on foot or by bike, which is not only good for your wallet but also your health.
Conclusion
In conclusion, understanding the factors that affect gas prices can help you make better decisions about when and where to fill up your tank. While gas prices are out of our control, there are things we can do to reduce our fuel consumption and save money. By following the tips outlined in this article, you can improve your fuel efficiency and reduce your reliance on gas-powered vehicles. As gas prices continue to fluctuate, it’s essential to stay informed and make smart choices for both your wallet and the environment.