Toyota Tundra Fuel Tank Size Chart by Year 2000-2026 and Models
The Toyota Tundra fuel tank size chart covers four factory capacity figures across U.S. model years 2000 through 2026: 26.4, 38.0, 22.5, and 32.2 gallons. The correct capacity depends on the year and, for several model years, the trim and factory equipment.
Most 2000–2014 Tundras use a 26.4-gallon tank. The second generation later offered a 38-gallon version, while the redesigned 2022 Tundra introduced 22.5- and 32.2-gallon tanks. For 2026, Toyota standardized the 32.2-gallon tank across the U.S. lineup.
The chart below separates those changes so you can find the right specification before checking your truck’s equipment.
Toyota Tundra / U.S. models / 2000–2026
How Tundra Fuel Tank Sizes Changed
Factory capacities in U.S. gallons. Bar lengths are scaled to the 38-gallon tank. Two bars mean the model-year group includes different equipment configurations.
Reading the graphic: These are nominal factory capacities, not the gallons added at each fill-up. Liter conversions are rounded.
2015 exception: A manual listing does not establish which tank a particular truck has. Check the original build details before ordering parts.
Toyota Tundra Fuel Tank Size Chart by Year
This chart lists nominal factory fuel tank capacity, not the amount of gasoline you should expect to add at every fill-up. Liter values are rounded from U.S. gallons. Multiple capacities in one row mean that factory configurations differed, not that every trim offered a choice.
| Model Year | Generation | Factory Tank Size | Approx. Liters | Important Configuration Note |
|---|---|---|---|---|
| 2000 | First | 26.4 gal | 100 L | Original Tundra lineup |
| 2001 | First | 26.4 gal | 100 L | Factory specification |
| 2002 | First | 26.4 gal | 100 L | Factory specification |
| 2003 | First | 26.4 gal | 100 L | Factory specification |
| 2004 | First | 26.4 gal | 100 L | Includes expanded cab lineup |
| 2005 | First | 26.4 gal | 100 L | V6 and V8 models |
| 2006 | First | 26.4 gal | 100 L | Final first-generation year |
| 2007 | Second | 26.4 gal | 100 L | Redesigned second generation |
| 2008 | Second | 26.4 gal | 100 L | Factory specification |
| 2009 | Second | 26.4 gal | 100 L | Factory specification |
| 2010 | Second | 26.4 gal | 100 L | Factory specification |
| 2011 | Second | 26.4 gal | 100 L | Factory specification |
| 2012 | Second | 26.4 gal | 100 L | Factory specification |
| 2013 | Second | 26.4 gal | 100 L | Factory specification |
| 2014 | Second | 26.4 gal | 100 L | Pre-large-tank model lineup |
| 2015 | Second | 26.4 / 38.0 gal* | 100 / 144 L | 2015 manual lists both; verify exact build |
| 2016 | Second | 26.4 / 38.0 gal | 100 / 144 L | 38-gal tank on designated higher grades |
| 2017 | Second | 26.4 / 38.0 gal | 100 / 144 L | SR5 could have 38-gal upgrade |
| 2018 | Second | 26.4 / 38.0 gal | 100 / 144 L | Grade and package dependent |
| 2019 | Second | 26.4 / 38.0 gal | 100 / 144 L | Grade and package dependent |
| 2020 | Second | 26.4 / 38.0 gal | 100 / 144 L | Grade and package dependent |
| 2021 | Second | 26.4 / 38.0 gal | 100 / 144 L | Trail Edition included 38-gal package |
| 2022 | Third | 22.5 / 32.2 gal | 85 / 122 L | SR5 large-tank option; higher grades 32.2 |
| 2023 | Third | 22.5 / 32.2 gal | 85 / 122 L | SR and SR5 smaller-tank configurations |
| 2024 | Third | 22.5 / 32.2 gal | 85 / 122 L | SR5 larger-tank option |
| 2025 | Third | 22.5 / 32.2 gal | 85 / 122 L | SR5 option; higher grades 32.2 gal |
| 2026 | Third | 32.2 gal | 122 L | Standard across all U.S. grades |
The 2015 owner’s manual includes specifications for both standard and large tanks, while Toyota’s subsequent 2016 launch announcement describes the larger tank as a new feature on higher grades. Do not identify a specific 2015 truck as a 38-gallon model without checking its factory equipment.
Quick capacity conversion: 22.5 gallons is about 85 liters; 26.4 gallons is about 100 liters; 32.2 gallons is about 122 liters; and 38.0 gallons is about 144 liters. These are U.S. gallons, not Imperial gallons.
Three model-year changes deserve closer attention: the large-tank listings around 2015–2016, the 2022 redesign, and the universal 32.2-gallon tank for 2026.
What Size Tank Came on 2000 to 2006 Tundras
First-generation Toyota Tundras have a 26.4-U.S.-gallon (100-liter) factory fuel tank. That figure applies across the early lineup, including trucks equipped with the 3.4L V6 and 4.7L V8, and continues through the final 2006 model year.
Toyota’s original owner documentation states the capacity as 100 liters, equivalent to 26.4 U.S. gallons. A Double Cab from the later first-generation years does not automatically require a different tank simply because its wheelbase and cab are larger.
What Changed for 2007 to 2014 Tundras
The second-generation Tundra arrived for 2007, but 26.4 gallons remained the factory capacity through the 2014 model year. Toyota’s period specifications and owner manuals identify 100 liters, including on V8-equipped trucks.
Why 2015 Tundra Fuel Tank Listings Need Verification
The 2015 Toyota Tundra owner’s manual lists a standard 26.4-gallon tank and a large 38.0-gallon tank. However, Toyota’s announcement for the following 2016 model year presents the 38-gallon tank as a new feature for specific upper trims.
That difference matters. The manual shows that Toyota documented both capacities for 2015, but a general manual does not prove a particular truck was factory-equipped with the larger unit. Likewise, a generic specification for a 2015 Limited may show 26.4 gallons, depending on the database and configuration.
You can examine Toyota’s 2015 Tundra owner’s manual library and compare it with the original window sticker or dealer equipment record for the truck in question. For 2015 specifically, avoid buying a 38-gallon replacement tank based only on the manual’s list of possible capacities.
Toyota’s subsequent 2016 rollout provides a clearer starting point for the large-tank trim breakdown.
Which 2016 to 2021 Tundras Have 38 Gallons
Toyota publicized the 38-gallon fuel tank for the 2016 Tundra, making it standard on Limited, Platinum, 1794 Edition, and TRD Pro models. The smaller 26.4-gallon tank remained relevant to entry grades and certain SR5 configurations.
Toyota’s 2016 Tundra product announcement explicitly identifies those upper grades and the 38-gallon increase. For 2017, Toyota further specified that SR and SR5 had 26.4 gallons, while SR5 could receive 38 gallons with an upgrade package.
| Grade or Factory Equipment | Typical 2016–2017 Capacity |
|---|---|
| SR | 26.4 gallons |
| SR5 without large-tank upgrade | 26.4 gallons |
| SR5 with qualifying upgrade package | 38.0 gallons |
| Limited | 38.0 gallons |
| Platinum | 38.0 gallons |
| 1794 Edition | 38.0 gallons |
| TRD Pro | 38.0 gallons |
One useful 2021 example is the Trail Special Edition. Toyota described it as an SR5 CrewMax equipped with the SR5 Upgrade Package, including the larger 38-gallon tank. That shows why an SR5 badge by itself cannot settle the question.
Compared with a 26.4-gallon tank, the 38-gallon tank holds 11.6 additional U.S. gallons. That provides greater potential driving distance at the same fuel economy, although towing and terrain can sharply reduce actual range.
Which 2022 to 2025 Tundras Have 32.2 Gallons
The fully redesigned 2022 Tundra replaced the old capacity pair with 22.5- and 32.2-gallon tanks. The third generation uses Toyota’s twin-turbocharged i-FORCE V6 and available i-FORCE MAX hybrid system rather than the previous V8 lineup.
In the 2022 factory brochure, SR and SR5 list a standard 22.5-gallon tank, the SR5 lists an available 32.2-gallon tank, and higher grades list 32.2 gallons. That overall pattern continues in subsequent third-generation brochure tables, subject to each model year’s package offerings.
Toyota’s 2025 Tundra factory brochure makes the distinction especially clear:
| 2025 Tundra Grade | Factory Tank Capacity |
|---|---|
| SR | 22.5 gallons |
| SR5 | 22.5 gallons standard; 32.2 available |
| Limited | 32.2 gallons |
| Platinum | 32.2 gallons |
| 1794 Edition | 32.2 gallons |
| TRD Pro | 32.2 gallons |
| Capstone | 32.2 gallons |
Toyota’s i-FORCE MAX hybrid designation does not create a separate universal fuel-tank number. Check the year and actual grade combination. Our Toyota Tundra trim levels chart explains the broader grade differences without confusing engine availability with tank fitment.
For owners comparing a 2025 model with a 2026 truck, Toyota made the question simpler in the newer model year.
Why Every 2026 Tundra Gets 32.2 Gallons
Every U.S.-market 2026 Toyota Tundra has a standard 32.2-gallon fuel tank, including SR and SR5 models. Toyota eliminated the smaller 22.5-gallon option for the 2026 model year.
Toyota’s 2026 Tundra announcement confirms the 32.2-gallon standard for both i-FORCE and i-FORCE MAX models.
That does not mean every 2026 Tundra holds more fuel than every 2025 Tundra. Many 2025 trucks already used the same 32.2-gallon tank. The major change is that lower grades no longer receive the smaller tank.
An SR owner moving from a 2025 22.5-gallon truck to a 2026 32.2-gallon truck gains 9.7 gallons of rated capacity. For a 2025 Limited owner, there is no corresponding capacity increase from this update alone.
How to Verify Your Toyota Tundra Tank Size
The model-year chart narrows the possibilities. Your individual truck’s original factory equipment determines the correct answer when two capacities appear for the same year.
- Confirm the model year. Use the registration or VIN documentation, not an assumed calendar-year purchase date.
- Check Toyota’s owner’s manual. Find the fuel specifications, but understand that manuals sometimes list more than one possible tank.
- Identify the exact trim and packages. An SR5 with an upgrade package can differ from another SR5 of the same year.
- Check the original window sticker or factory build details. Ask a Toyota dealer to confirm equipment using the complete VIN when the sticker is unavailable.
- Account for repairs or modifications. An older truck may have had its factory tank replaced, so the original specification might no longer describe the installed hardware.
Do not use the driver-door payload label as a direct fuel-tank identifier. That label is intended for tire, load, and weight information, not as a universal capacity certificate. A VIN decoder can help identify the truck, but may not reveal every tank-related option.
Cab and bed arrangements also changed between generations. If those details are uncertain, compare the truck with our Toyota Tundra bed size chart before using a year-and-package specification.
A fill-up receipt is not a dependable substitute for factory equipment records, because the tank normally still contains fuel when you stop to refill.
How Fuel Tank Size Affects Tundra Driving Range
The simplest theoretical range calculation is tank capacity in gallons multiplied by fuel economy in miles per gallon. It is a planning calculation, not a promise that all of the fuel can be used in real driving.
For example, assume a truck averages 18 mpg in a particular driving situation. Theoretical ranges would be approximately 405 miles with 22.5 gallons, 475 miles with 26.4 gallons, 580 miles with 32.2 gallons, and 684 miles with 38 gallons.Tank Size Example at 18 mpg 22.5 gallons 405 miles 26.4 gallons 475 miles 32.2 gallons 580 miles 38.0 gallons 684 miles
The 18-mpg value is an illustrative assumption, not one official EPA rating for all Tundras. Actual range depends on the year, powertrain, drivetrain, speed, towing weight, temperature, terrain, and tire setup.
A low-fuel warning does not mean the tank has become completely empty. Fuel remaining below the gauge’s warning threshold, pump shutoff behavior, and vehicle position can affect how many gallons enter during a fill-up.
Stop filling when the nozzle shuts off normally rather than repeatedly topping off. If the pump clicks off well before the tank should be full, our guide to gas pumps that keep clicking off explains possible filler-neck and vapor-venting problems. It does not establish your tank’s rated capacity.
Which Toyota Tundra Tank Size Applies to Your Truck
The Toyota Tundra fuel tank size chart points to 26.4 gallons for the older generations, with an important large-tank documentation exception around 2015. The 2016–2021 lineup used 26.4- and 38-gallon configurations, while the 2022–2025 lineup used 22.5 and 32.2 gallons. For 2026, Toyota made 32.2 gallons standard across all U.S. grades.
When a single capacity appears for your year, the chart is a useful starting point. When two capacities appear, the trim and factory packages matter just as much as the model year. Before buying a replacement tank or estimating long-distance range, confirm the original equipment on your specific truck. That one check prevents an otherwise accurate general specification from becoming the wrong answer for your Tundra.
Toyota Tundra Fuel Tank Size Questions Answered
How Many Gallons Does a Toyota Tundra Gas Tank Hold?
Depending on the year and configuration, factory Tundra capacities in this guide are 22.5, 26.4, 32.2, or 38.0 U.S. gallons. Check the model-year chart first, then verify the original equipment when two sizes appear in the same row.
Which Toyota Tundra Years Have a 38 Gallon Tank?
The 38-gallon tank is clearly documented in Toyota’s 2016–2021 second-generation equipment offerings, especially on higher trims and qualifying SR5 packages. The 2015 owner’s manual also lists a large 38-gallon tank, but availability on an individual 2015 truck should be confirmed from its original build information.
Does the 2025 Toyota Tundra Have a 32.2 Gallon Tank?
Yes. For 2025, Toyota listed 32.2 gallons as standard on Limited, Platinum, 1794 Edition, TRD Pro, and Capstone, and available on SR5. The SR’s factory specification remained 22.5 gallons, so the larger figure does not describe every 2025 Tundra.
Is the 2026 Toyota Tundra Fuel Tank Bigger Than the 2025 Model?
It is bigger than the smaller 22.5-gallon tank used on some 2025 models, but not bigger than the 32.2-gallon tank already fitted to many 2025 trucks. Toyota made the 32.2-gallon tank standard across every U.S. grade for 2026.
How Can I Tell Which Fuel Tank My Tundra Has?
Check your year, trim, and equipment package against Toyota’s documentation, then confirm the original build through the window sticker or a Toyota dealer using the VIN. Do not rely only on fuel-gauge readings or the amount shown on your last gas-station receipt.
