
The cost of filling up a tank of gas varies depending on several factors, including the vehicle type, gas type, location, and date of purchase. The average price of gas in the US is $3.14 per gallon, but this can range from $2.83 to $5.99 per gallon. The size of a car's gas tank typically depends on the vehicle's size, with smaller cars holding around 12 gallons and larger cars holding 15-16 gallons. The cost of filling up a tank of gas can also be impacted by the use of cashback credit cards, gas apps, and rewards programs.
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What You'll Learn

Gas prices vary by region
The cost of filling a tank of gas varies depending on several factors, including the vehicle type, gas grade, and region.
Gas prices vary significantly across different regions, with West Coast states like California and Oregon typically having the highest prices due to gas taxes and special processing requirements. On the other hand, states in the South and Midwest, such as Mississippi and Oklahoma, tend to have lower gas prices. For example, in September 2022, gas prices in Oregon were as high as $5.99 per gallon, while prices in some parts of California reached $4.59 per gallon. In contrast, gas prices in New Jersey were around $3.35 per gallon, and in certain areas of Connecticut, they were as low as $2.90 per gallon.
The size of a vehicle's gas tank also plays a role in the overall cost of filling up. Smaller cars generally have gas tanks that hold around 12 gallons, while larger cars can hold 15 to 16 gallons or more. For instance, a Toyota Corolla may have a 10-11 gallon tank, whereas a truck could have a tank capacity of 25 gallons or more. As a result, filling a larger vehicle's tank will inevitably cost more than filling a smaller car's tank, assuming similar fuel efficiency.
Additionally, gas prices can fluctuate within a region due to various factors such as local taxes, refinery access, and supply disruptions. To find the most affordable gas prices in their area, individuals can use gas apps like GasBuddy, Waze, or Google Maps, which provide real-time price information and help them make informed decisions about where to fill up.
It is worth noting that gas prices also vary depending on the grade of gas. Regular gas is typically the most affordable option, while higher grades like premium or diesel tend to be more expensive. Moreover, gas prices tend to be higher on Fridays and Saturdays, so filling up at the beginning of the week can result in cost savings.
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Gas prices fluctuate
Crude oil prices significantly influence gasoline prices. Retail gasoline prices tend to follow the trends set by crude oil prices. The cost of crude oil, taxes, and distribution collectively shape the price at the pump. Federal, state, and local government taxes contribute to the final retail price, with federal taxes including an excise tax and the Leaking Underground Storage Tank fee. Taxes can vary across regions, impacting the price consumers pay.
Seasonal changes also play a role in gas price fluctuations. Gasoline demand typically increases during the summer due to more frequent driving and family road trips. Environmental regulations require summer gasoline to be less prone to evaporation during warm weather, leading to the use of more expensive components. As a result, gasoline prices are generally higher in the summer compared to winter months.
The octane level of gasoline, indicating its resistance to combustion, also affects pricing. Refiners charge more for higher-octane fuel, with premium-grade gasoline being the most expensive option. The price difference between regular and premium-grade gasoline has generally increased over time.
Additionally, local market conditions, such as fueling location, marketing strategies, and competition, can impact gas prices. The cost of doing business for gasoline retailers varies depending on factors like wages, rent, and sources of supply. These factors collectively contribute to the dynamic nature of gas prices, making it essential for consumers to stay informed and adapt their purchasing strategies accordingly.
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Cost depends on vehicle type
The cost of a tank of gas depends on several factors, including the vehicle type, the price of gas in your location, and how often you drive.
The amount of gas a car can hold depends on its size. Smaller cars usually have gas tanks that hold around 10-12 gallons, whereas larger cars can hold 15-16 gallons. For example, a Toyota Corolla has a tank of around 10-11 gallons, while a Honda sedan has a tank of about 10 gallons. Trucks tend to have much larger tanks, with some holding up to 25, 30, or even 36 gallons.
Let's consider an example to understand the cost implications of different vehicle types. Assuming the price of gas in your area is $3.85 per gallon, a small car with a 12-gallon tank would cost approximately $46.20 to fill up, whereas a larger car with a 15-gallon tank would cost around $57.75. If you own a truck with a 30-gallon tank, you could be paying close to $114 to fill it up at the same gas price.
It's worth noting that gas prices can vary significantly by region. For instance, West Coast states like California and Hawaii tend to have higher gas prices, while states in the South and Midwest are generally cheaper. Additionally, gas prices fluctuate over time due to factors such as the price of crude oil, taxes, and distribution, local taxes, refinery access, and supply disruptions.
To save money on fuel costs, you can compare gas prices in your area, use gas apps like GasBuddy, Waze, or Google Maps, combine your errands to reduce short trips, and join gas rewards programs to earn cashback or discounts.
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Save money by using gas apps
The cost of filling up a tank of gas can vary depending on several factors, including the vehicle type, how much you drive, and the number of gallons your car can hold. For instance, smaller cars with 12-gallon tanks may cost around $46.20 to fill up, while larger cars with 15-gallon tanks may cost approximately $57.75. With gas prices continuing to rise, it's essential to explore ways to save money on fuel costs. This is where gas apps come in.
Gas apps can be incredibly beneficial in locating low gas prices, helping you pinch pennies, and even staying on top of car maintenance. One such example is GasBuddy, a crowd-sourced app with over 100 million downloads. GasBuddy users can report real-time prices at stations, allowing you to find the best deals on fuel. Additionally, GasBuddy offers the Pay with GasBuddy program, where you can get a free card linked to your bank account. By using this card for shopping and dining, you earn GasBack rewards that can be redeemed for discounts at the pump, saving you up to 30 cents per gallon.
Another useful app is MapQuest, which can help you find gas stations along your route and suggest the most affordable option. It also provides information on traffic and restaurant reservations. If you're a frequent user of BP gas stations, the BPme Rewards app can help you save 5 cents per gallon. Similarly, the Shell app offers a loyalty program where you can save 5 cents per gallon, and if you fill up 12 or more times with at least 10 gallons each time, you'll be upgraded to platinum status, earning you 10 cents off per gallon.
The Upside app, formerly known as GetUpside, offers cashback on gas, groceries, and restaurants. While the app doesn't specify the exact savings, it used to provide discounts of up to 25 cents per gallon when it was GetUpside. Additionally, the Carfax Car Care app helps you keep up with your car's maintenance, alerting you to upcoming services and providing a customized dashboard for your vehicle's service history and maintenance schedules.
By leveraging these gas apps, you can make informed choices, locate the best prices, and maximize your savings at the pump, helping to stretch your dollar further in the face of rising gas prices.
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Save money by joining rewards programs
The cost of filling up a tank of gas varies depending on several factors, including the size of your car's gas tank, the price of gas per gallon, and how often you fill up. With gas prices on the rise, joining a gas rewards program can be a great way to save money on fuel costs. Here are some benefits and tips to help you get started:
Benefits of Joining Rewards Programs
Gas rewards programs offer various benefits to help you save money on fuel purchases. Here are some common advantages:
- Discounts and Rewards Points: Many programs offer discounts per gallon or reward points for each purchase. For example, the Exxon Mobil Rewards+ program offers 6 points per gallon on premium fuel purchases, and Speedway Speedy Rewards provides 10 points per gallon at the pump. These points can be redeemed for future discounts or rewards.
- Partnership Benefits: Some gas stations partner with grocery stores or other businesses to offer additional benefits. For instance, Shell has partnered with grocery stores, allowing you to earn fuel points when you shop at participating supermarkets.
- Convenience Store Rewards: Many gas station rewards programs also offer benefits for purchases made at their convenience stores. Exxon Mobil Rewards+, for example, allows you to earn and redeem points on convenience store items.
- Sign-Up Bonuses: Some programs provide sign-up bonuses, such as a free drink or a certain number of cents off per gallon on your first few fill-ups.
Tips for Choosing a Rewards Program
When selecting a gas rewards program, consider the following:
- Frequently Visited Stations: Opt for a rewards program from a gas station that you visit regularly. Many programs offer higher rewards rates to loyal customers, so choosing a program associated with a station convenient for you can help maximize your savings.
- Compare Rewards Structures: Different rewards programs have varying structures. Some may offer a certain number of cents back per gallon, while others provide points that can be redeemed for discounts. Evaluate the rewards structure to determine which program offers the most value for your purchasing habits.
- No Annual Fees: Most gas rewards programs are free to join. Avoid programs that charge annual fees, as this may offset the savings you accumulate through discounts and rewards.
- App or Website Convenience: Many gas rewards programs offer user-friendly apps or websites that allow you to track and redeem your rewards easily. Look for a program with a well-designed digital platform to simplify your rewards experience.
By strategically joining a gas rewards program and taking advantage of the benefits and discounts offered, you can significantly reduce your fuel costs over time. Remember to review the terms and conditions of each program before enrolling to ensure you understand how to maximize your savings.
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Frequently asked questions
The cost of a tank of gas depends on the vehicle’s size and the gas price per gallon. Smaller cars generally have gas tanks that hold 12 gallons, while larger cars can hold 15 or 16 gallons. The national average price per gallon is $3.14, but this varies by state.
The size of the gas tank determines how much gas your vehicle can hold and, consequently, how much it will cost to fill up. For example, if gas costs $3.85 per gallon in your area, a car with a 12-gallon tank will cost $46.20 to fill up, while a larger car with a 15-gallon tank will cost $57.75.
Yes, there are several ways to save money on the cost of gas:
- Compare gas prices in your area or use apps like GasBuddy, Waze, or Google Maps to find the lowest prices.
- Plan your trips to combine errands and reduce the number of trips.
- Join gas rewards programs to earn discounts or cashback rewards.
- Use a cashback credit card to maximize savings, but be sure to pay off the balance in full each month to avoid interest charges.
- Fill up your tank on Mondays, which is typically the cheapest day of the week for gas prices.











































