U.S. gas price guides
41 practical guides about fuel prices, fuel economy, road-trip costs and U.S. price data.
Thanksgiving 2026 Road Trip Gas Cost: What You Will Pay This Year
Gas prices heading into Thanksgiving 2026 are more than $1 a gallon higher than a year ago. Here is what popular holiday drives cost, when to leave and how to save.
Regular Gas Price Today in the U.S.: National Average and What Drives It
The latest U.S. national average for regular gasoline from EIA, why prices differ so much between states, and how to pay less at the pump.
Midgrade Gas Price: What 89 Octane Costs and Who Should Buy It
The latest U.S. average for midgrade gasoline, how it is made at the pump and why few cars actually need it.
Premium Gas Price Today: How Much More Than Regular – and Is It Worth It?
The latest U.S. average price of premium gasoline, how big the gap to regular is, and when your car really needs it.
Diesel Price Today in the U.S.: Why Diesel Often Costs More Than Gas
The latest U.S. national average diesel price, why diesel is often more expensive than regular gasoline, and what moves diesel prices.
Regular vs Premium Gas: When Is Premium Worth Paying For?
What octane really means, which cars need premium, which only recommend it, and how much choosing premium costs you each year.
Midgrade vs Regular Gas: What Is the Difference and Which Should You Buy?
Octane explained in plain terms, the price gap between 87 and 89, and a simple rule for choosing the right grade.
How Gas Prices Work: What You Pay For in a Gallon of Gasoline
The four building blocks of the U.S. pump price — crude oil, refining, distribution and marketing, and taxes — and why each one moves.
Oil Prices vs Gas Prices: How a Change in Crude Reaches the Pump
The rule of thumb linking a $1 change in a barrel of crude to the price per gallon, the typical delay, and why prices seem to rise faster than they fall.
Gas Taxes in the U.S.: Federal and State Taxes per Gallon
The federal gas and diesel tax, how state taxes differ, and why taxes explain part of the price gap between states.
Weekly vs Daily Gas Prices: Why Averages Differ by Source
Why EIA, AAA and apps show different gas prices on the same day, and which number to use for what.
National vs State Gas Prices: Why the Gap Can Be Over $2 a Gallon
Why a gallon costs far more in California than in Texas, with the latest EIA state numbers and the reasons behind the gap.
How to Read Gas Prices Per Gallon: The Tenth-of-a-Cent Explained
What the “9/10” on U.S. gas signs means, how to compare prices correctly and how to convert between gallons and liters.
How to Calculate Gas Cost for a Road Trip (With Examples)
The simple formula for a trip’s fuel cost, worked examples for popular U.S. routes and tips to budget a road trip.
How to Calculate Your Car’s Real MPG (Fill-to-Fill Method)
Measure your real fuel economy in three steps, understand why it differs from the EPA rating, and convert MPG to cost per mile.
How Much Does It Cost to Fill Up a Gas Tank? Prices by Tank Size
What it costs to fill a typical car, SUV and pickup at today’s average gas price, with a simple formula and examples by state.
Is It Worth Driving Farther for Cheaper Gas? The Break-Even Math
How many miles you can drive to save on gas before the detour costs more than it saves – with a quick formula and table.
How Much Do You Save With 10 or 20 Cents Off per Gallon?
What a 10-cent or 20-cent discount really saves per fill-up, per month and per year – and how fuel-rewards programs compare.
How Much Do You Save at 20 Cents Less per Gallon?
What a 20-cent price gap is worth per fill-up, per year and per trip – and when it justifies driving to another station.
How to Build a Monthly Gas Budget (With Examples)
A step-by-step way to estimate monthly fuel spending from your commute and errands, and how to keep it on track when prices change.
How Much Do You Spend on Gas per Year? Annual Fuel Cost Calculator Guide
Estimate your annual gas bill from miles driven, MPG and the current price – with examples for typical cars, SUVs and pickups.
10 Proven Ways to Improve Gas Mileage (and How Much Each Saves)
Driving habits and maintenance tips backed by FuelEconomy.gov, ranked by how much they can cut your fuel bill.
Tire Pressure and Gas Mileage: How Much Does It Really Matter?
How under-inflated tires waste fuel, where to find the right pressure for your car and how often to check it.
Roof Racks, Cargo Boxes and Fuel Economy: How Much They Cost You
How much a roof box or bike rack reduces MPG, why speed makes it worse and cheaper ways to carry extra gear.
Why Short Trips Hurt Fuel Economy – and How to Fix It
Cold engines use much more fuel. How short trips affect your mileage and simple ways to cut the cost of errands.
City vs Highway MPG: Why Fuel Economy Changes and What It Costs
Why most cars get better mileage on the highway, why hybrids are different, and how speed changes your fuel bill.
Why Are California Gas Prices So High?
Special fuel blends, high taxes and fees, an isolated refining market and environmental programs: the reasons California pays the most for gas.
Why Is Gas Cheaper in Texas?
Refinery capacity on the Gulf Coast, a 20¢ state gas tax unchanged since 1991, and no special fuel blend outside a few metro areas.
Florida Gas Stations and Gas Prices: Cities, Map and Weekly Averages
Florida’s weekly EIA gas price, why gas is priced the way it is, and how to browse registered stations by city.
Los Angeles Gas Prices This Week: Why LA Pays Much More Than the U.S.
This week’s EIA average for Los Angeles, how it compares with the U.S., and why California gas is the most expensive in the lower 48.
San Diego Gas Stations and Gas Prices: Daily Average and Station List
California gas costs more than anywhere else in the lower 48 – what that means for San Diego and where to browse local stations.
Houston Gas Prices This Week: Why Houston Is One of the Cheapest U.S. Cities
This week’s EIA average for Houston, how it compares with the U.S. average and why gas on the Gulf Coast is so cheap.
Dallas Gas Stations and Gas Prices: Texas Average and Station List
Texas weekly gas price as the baseline for Dallas, why Texas gas is cheap and where to browse registered stations.
Austin Gas Stations and Gas Prices: Texas Average and Station List
What gas costs in Austin, why Texas has some of the cheapest gas in the U.S. and how to browse registered stations in the area.
Miami Gas Stations and Gas Prices: Weekly Average and Station List
This week’s EIA gas price for Miami, how it compares with Florida and the U.S., and where to browse Miami fuel stations.
Orlando Gas Stations and Gas Prices: Baseline Price and Station List
What gas costs in the Orlando area, why prices near the theme parks differ and how to browse the stations registered in Orlando.
Tampa Gas Stations and Gas Prices: Baseline Price and Station List
The Florida weekly gas price as a baseline for Tampa, tips for finding cheaper gas in the Tampa Bay area and how to browse registered stations.
How EIA Gas Price Data Works (and How to Read It Correctly)
How EIA collects its weekly retail gasoline and diesel prices, what the national, regional and state series mean, and their limits.
U.S. Gas Price History: Highs, Lows and What Caused Them
Key moments in U.S. gasoline prices since 2000, the record of 2022, and how to read the EIA weekly series.
Is There a Best Day to Buy Gas? What the Data Shows
Day-of-week myths, seasonal patterns and why choosing the right station saves far more than choosing the right day.
Station Price vs Area Average: Why Your Pump Price Differs
An average is not what you pay. Why individual stations charge more or less than the EIA average and how to find the best price nearby.