Buc-ee’s Diesel Prices: Live State-by-State Rates
As of September 2026, Buc-ee’s diesel prices range from $2.98 to $3.85 per gallon across its 60+ locations. Texas City, TX, has the lowest reported price at $2.98 per gallon, while Goodyear, AZ, has the highest at $3.85 per gallon. Buc-ee’s diesel prices are typically 30 to 50 cents per gallon higher than regular unleaded gas, following the usual diesel-to-gas price difference.
Buc-ee’s sells standard #2 automotive diesel for passenger vehicles, RVs, and light-duty pickup trucks, but it does not offer high-flow trucker lanes because 18-wheelers are prohibited at Buc-ee’s locations. This guide covers the latest Buc-ee’s diesel prices by state, DEF availability, and how Buc-ee’s compares with Sam’s Club, Costco, and other bulk fuel retailers.
How Much Is Diesel at Buc-ee’s in September 2026?
In September 2026, Buc-ee’s diesel prices range from $2.98 per gallon at Texas City, TX, the chain’s cheapest rate, to $3.85 per gallon at Goodyear, AZ, the highest. Most Texas Buc-ee’s locations are priced between $2.98 and $3.15 per gallon, while locations across the Southeast, including Alabama, Georgia, Florida, Tennessee, and Kentucky, generally average $3.05 to $3.25 per gallon. Northern and Western locations in Colorado, Ohio, and Arizona tend to be more expensive, with diesel prices ranging from about $3.25 to $3.85 per gallon.
| Stateate | Sample StoreSample Store | Sep 2026 Diesel Priceep 2026 Diesel Price | Diesel AvailableDiesel Available | DEF AvailableDEF Available |
| Texas | Texas City (chain cheapest) | $2.98/gal | Yes | Yes |
| Texas | Baytown | $3.02/gal | Yes | Yes |
| Texas | Katy | $3.05/gal | Yes | Yes |
| Texas | Luling | $3.05/gal | Yes | Yes |
| Texas | San Marcos | $3.08/gal | Yes | Yes |
| Texas | New Braunfels | $3.08/gal | Yes | Yes |
| Texas | Fort Worth | $3.10/gal | Yes | Yes |
| Texas | Amarillo | $3.15/gal | Yes | Yes |
| Louisiana | Coming April 2027 | TBD | TBD | TBD |
| Alabama | Athens | $3.15/gal | Yes | Yes |
| Alabama | Leeds | $3.15/gal | Yes | Yes |
| Alabama | Auburn | $3.18/gal | Yes | Yes |
| Alabama | Robertsdale | $3.20/gal | Yes | Yes |
| Georgia | Warner Robins | $3.18/gal | Yes | Yes |
| Georgia | Brunswick | $3.20/gal | Yes | Yes |
| Florida | Daytona Beach | $3.22/gal | Yes | Yes |
| Florida | St. Augustine | $3.24/gal | Yes | Yes |
| South Carolina | Florence | $3.24/gal | Yes | Yes |
| Tennessee | Sevierville | $3.20/gal | Yes | Yes |
| Tennessee | Crossville | $3.22/gal | Yes | Yes |
| Kentucky | Richmond | $3.15/gal | Yes | Yes |
| Kentucky | Smiths Grove | $3.18/gal | Yes | Yes |
| Mississippi | Harrison County | $3.15/gal | Yes | Yes |
| Missouri | Springfield | $3.22/gal | Yes | Yes |
| Virginia | Mount Crawford | $3.35/gal | Yes | Yes |
| Arkansas | Benton (newest, Aug 2026) | $3.18/gal | Yes | Yes |
| Ohio | Huber Heights (Apr 2026) | $3.28/gal | Yes | Yes |
| Colorado | Johnstown | $3.42/gal | Yes | Yes |
| Arizona | Goodyear (chain highest) | $3.85/gal | Yes | Yes |
| Kansas | Coming Oct 2027 | TBD | TBD | TBD |
| Nebraska | Coming 2027-28 | TBD | TBD | TBD |
Note: Prices can change every 24 to 48 hours. The figures shown above are September 2026 averages, based on each store’s pricing over the previous seven days. Weekend prices are usually 5 to 10 cents higher than midweek rates. For the latest real-time prices, check our Buc-ee’s live gas price tracker, which is updated hourly.
Why Is Buc-ee’s Diesel More Expensive Than Regular Gas?
Diesel generally costs more than regular gasoline at Buc-ee’s and other U.S. fuel stations for several reasons. Diesel has higher federal and state fuel taxes, requires more costly refining to meet ultra-low-sulfur diesel (ULSD) standards, and can also have higher wholesale petroleum prices.
The federal tax on diesel is 24.4 cents per gallon, compared with 18.4 cents for gasoline. In many states, diesel taxes are also around 3 to 5 cents per gallon higher than gasoline taxes, which adds to the price difference.
Does Buc-ee’s Have DEF (Diesel Exhaust Fluid)?
Yes, Buc-ee’s locations that sell diesel also offer DEF (Diesel Exhaust Fluid) at the pump. DEF is needed for modern diesel vehicles with SCR emission systems, including many 2010 and newer diesel pickups, RVs, and passenger vehicles.
At Buc-ee’s, DEF is dispensed alongside the diesel pumps, so drivers do not have to stop at a separate DEF station or purchase plastic containers. Buc-ee’s DEF prices typically range from $3.00 to $3.50 per gallon.
Can 18-Wheeler Trucks Buy Diesel at Buc-ee’s?
No. Buc-ee’s does not allow 18-wheeler trucks at its locations, so commercial truck drivers cannot use the diesel pumps either. Buc-ee’s diesel pumps are designed for passenger vehicles, RVs, and light-duty diesel pickup trucks.
Drivers of commercial 18-wheelers should use truck-friendly fuel stops such as Pilot Flying J, Love’s Travel Stops, or TA Petro, which provide facilities designed for large trucks. For more details, see our Buc-ee’s 18-wheeler truck ban policy breakdown.
How Does Buc-ee’s Diesel Compare to Sam’s Club and Costco?
In September 2026, Buc-ee’s, Costco, and Sam’s Club all generally keep fuel prices competitive to attract customers. Costco diesel is typically around 10 to 25 cents below the regional average, but a Costco membership is required. Sam’s Club diesel follows a similar pricing pattern and is also available only to members. Buc-ee’s diesel is usually 20 to 40 cents below the regional average, with no membership required. Pilot Flying J can offer competitive diesel prices for truck drivers but may be less attractive for regular retail customers.
Buc-ee’s main advantage is that drivers can buy diesel without paying a membership fee, and its locations are commonly found along major interstate routes. Buc-ee’s also operates 24 hours a day, while Costco and Sam’s Club typically close overnight.
Which Buc-ee’s Has the Cheapest Diesel?
Buc-ee’s in Texas City, TX, has the chain’s cheapest diesel at around $2.98 per gallon as of September 2026. Texas City is located near the Houston-area refinery network, with access to major refineries operated by Marathon Petroleum, Valero, and BP. These supply advantages help keep local wholesale diesel costs lower, which can result in cheaper pump prices for customers. For more information, see our guide to all 37+ Texas Buc-ee’s locations.
Which Buc-ee’s Has the Most Expensive Diesel?
Buc-ee’s in Goodyear location, AZ, has the highest diesel price in the chain at around $3.85 per gallon as of September 2026. Arizona has one of the more expensive diesel markets in the western U.S., influenced by limited fuel distribution, California-related pricing, and higher state fuel taxes. Even at $3.85 per gallon, Goodyear’s diesel is typically 15 to 25 cents below the Arizona state average. For more information about electric vehicle options, see our guide to Buc-ee’s complete EV charging network.
Buc-ee’s diesel prices by region (September 2026)
| RegionRegion | Avg Diesel Pricevg Diesel Price | Cheapest Buc-ee’sheapest Buc-ee’s | Notesotes |
| Texas Gulf Coast | $3.00 to $3.10/gal | Texas City ($2.98) | Cheapest region, refinery access |
| Central Texas | $3.05 to $3.15/gal | Luling ($3.05) | Solid pricing, high I-10 volume |
| North Texas / DFW | $3.08 to $3.15/gal | Fort Worth ($3.10) | Standard DFW metro pricing |
| Southeast (AL/GA/SC/FL) | $3.15 to $3.24/gal | Athens/Leeds AL ($3.15) | I-65 corridor generally cheapest |
| Tennessee / Kentucky | $3.15 to $3.22/gal | Richmond KY ($3.15) | I-75 corridor pricing |
| Missouri / Arkansas | $3.18 to $3.22/gal | Benton AR ($3.18) | New AR store, competitive |
| Ohio / Midwest | $3.25 to $3.30/gal | Huber Heights ($3.28) | Higher Midwest tax burden |
| Colorado / Rocky Mountain | $3.40 to $3.45/gal | Johnstown ($3.42) | Boutique blend requirements |
| Arizona / Southwest | $3.80 to $3.85/gal | Goodyear ($3.85) | Chain highest, isolated market |
Do Buc-ee’s Diesel Prices Change Often?
Yes. Buc-ee’s diesel prices typically change every 24 to 48 hours, based on wholesale fuel prices and local competitor pricing. Weekend rates can be 5 to 10 cents higher than midweek prices, while major holiday travel periods such as Thanksgiving, Christmas, Fourth of July, and Memorial Day can bring increases of around 10 to 15 cents per gallon.
When Is the Best Time to Buy Buc-ee’s Diesel?
For lower diesel prices, Tuesday through Thursday mornings are generally the best times to fill up. It can also help to avoid holiday weeks and Sunday evenings, when prices may be higher. At some high-volume locations, early-morning price changes after overnight fuel deliveries can sometimes result in lower rates. Winter months from October through March may also bring cheaper diesel because of lower seasonal demand.
For long road trips, checking prices at locations such as Texas City, Baytown, and Katy, Texas, can help you find some of the lower Buc-ee’s diesel rates. You can also track price changes through the Buc-ee’s live gas price tracker.
Diesel Fuel Quality at Buc-ee’s
Buc-ee’s sells standard #2 automotive diesel for diesel passenger vehicles, RVs, and light-duty pickup trucks. Drivers can also find DEF at the pump at Buc-ee’s locations that offer diesel, making it a convenient option for modern diesel vehicles.
Public Review about
Which Buc-ee’s Is Best for You?
The best Buc-ee’s depends on your location and fuel needs. Texas City, TX, is the best choice for the lowest reported diesel price, while locations such as Baytown and Katy can also offer competitive Texas rates. For drivers traveling farther west, Goodyear, AZ, is more expensive but may still be a convenient highway stop.
How Much Can You Save at Buc-ee’s?
Your savings depend on the local price difference and how much diesel you need. For example, a 25-cent-per-gallon difference saves $5 on a 20-gallon fill-up and $7.50 on 30 gallons. Comparing nearby Buc-ee’s prices before filling up can help you find the better deal.
Is Buc-ee’s Diesel Good for RVs and Pickup Trucks?
Yes. Buc-ee’s diesel is intended for passenger diesel vehicles, RVs, and light-duty pickup trucks, making it a convenient option for road trips. Drivers with compatible modern diesel vehicles can also use DEF at the pump where available.
History
Buc-ee’s began in 1982 in Lake Jackson, Texas, as a small convenience store and fuel stop. As the company expanded into larger travel centers, diesel became an important part of its fuel offering for RVs, pickup trucks, and other diesel vehicles. Over the years, Buc-ee’s expanded diesel service across more states and added DEF at the pump at locations that sell diesel. The company has continued to focus its fueling areas on regular travelers rather than commercial trucks, maintaining its long-standing 18-wheeler ban.
Today, diesel is a standard part of Buc-ee’s fuel offering at many locations, although prices vary by state and local market conditions. The company’s diesel service continues to focus on everyday drivers, RV owners, and light-duty pickup owners rather than the commercial trucking market.
Frequently Asked Questions
i. How much is diesel at Buc-ee’s right now?
Buc-ee’s diesel prices vary by location, with September 2026 rates ranging from about $2.98 to $3.85 per gallon.
ii. Which Buc-ee’s has the cheapest diesel?
Texas City, Texas, has the lowest reported Buc-ee’s diesel price at around $2.98 per gallon in September 2026.
iii. Does every Buc-ee’s have diesel?
Most Buc-ee’s locations offer diesel, but fuel availability and pump options can vary by store.
iv. Does Buc-ee’s have DEF at the pump?
Yes. Buc-ee’s locations that sell diesel also offer DEF at the pump for compatible diesel vehicles.
v. Can 18-wheeler trucks buy diesel at Buc-ee’s?
No. 18-wheelers are not allowed at Buc-ee’s, so commercial trucks cannot use its diesel pumps.
vi. Is Buc-ee’s diesel cheaper than Costco or Sam’s Club?
Buc-ee’s diesel is generally 20 to 40 cents below the regional average, while Costco and Sam’s Club often offer competitive prices but require memberships.
vii. Why is diesel more expensive than regular gas at Buc-ee’s?
Diesel usually costs more because of higher fuel taxes, ULSD refining requirements, and wholesale fuel prices.
viii. How often do Buc-ee’s diesel prices change?
Buc-ee’s diesel prices typically change every 24 to 48 hours, depending on wholesale and local market conditions.
ix. Which Buc-ee’s has the most expensive diesel?
Goodyear, Arizona, has the highest reported Buc-ee’s diesel price at around $3.85 per gallon in September 2026.
x. When is the best time to buy diesel at Buc-ee’s?
Tuesday through Thursday mornings are generally better times to look for lower weekday diesel prices, while holiday periods and Sunday evenings may be more expensive.
Conclusion
Buc-ee’s diesel prices remain competitive in September 2026, ranging from about $2.98 to $3.85 per gallon depending on the location. Texas City, TX, has the lowest reported price, while Goodyear, AZ, has the highest. Buc-ee’s also offers DEF at the pump at locations that sell diesel, with no membership required.
For drivers, Buc-ee’s can be a convenient choice for road trips and everyday diesel needs, especially when prices are lower than nearby averages. Checking the latest rate before filling up can help you find the best deal, as Buc-ee’s diesel prices can change every 24 to 48 hours.
