2017 Ford F150 Fuel Tank Size – Determine Your Truck’S Range
The 2017 Ford F-150 offers three primary fuel tank capacities: 23 gallons, 26 gallons, and the highly coveted 36-gallon extended-range version. Identifying your specific tank size is essential for calculating towing range, planning off-road excursions, and understanding your vehicle’s total weight distribution.
Do you ever find yourself staring at the fuel gauge, wondering exactly how many miles you have left before the “Low Fuel” light turns from a suggestion into a crisis? You are not alone. Whether you are hauling a trailer through the mountains or navigating a remote trail, knowing your 2017 ford f150 fuel tank size is the first step in mastering your truck’s logistics.
Many owners assume all F-150s are built the same, but Ford designed this model year with several configurations to balance weight and utility. If you bought your truck used or lost the original window sticker, determining your capacity might feel like a guessing game. This guide will walk you through the technical specs and DIY methods to identify your tank once and for all.
We will dive deep into the mechanical differences between these tanks, how they affect your payload, and what you can do to extend your range. By the end of this article, you will be able to plan your stops with precision and avoid the frustration of an unexpected empty tank in the middle of nowhere.
The Exact 2017 ford f150 fuel tank size Based on Trim and Bed Length
The 2017 F-150 lineup was incredibly diverse, and the fuel system was no exception. Ford utilized different tanks to accommodate various wheelbases and consumer needs. Generally, the 2017 ford f150 fuel tank size falls into one of three categories: 23 gallons, 26 gallons, or 36 gallons.
The 23-gallon tank was the standard offering for most base models, particularly those with the 3.5L Ti-VCT V6 or the 2.7L EcoBoost engines. It was designed for the everyday driver who prioritizes a lower curb weight for better city fuel economy. While it is sufficient for commuting, it often leaves long-distance towers wanting more.
The 26-gallon tank was frequently found on specific configurations, such as the Regular Cab with an 8-foot bed or certain SuperCab models. It provides a slight buffer over the base tank but is less common than the other two options. If you have a specialized work truck configuration, this might be what is hiding under your frame rails.
The 36-gallon extended-range tank is the “gold standard” for the F-150 community. It was often included in the Max Trailer Tow Package or available as a standalone optional upgrade. This tank allows for incredible highway range, sometimes exceeding 700 miles on a single fill-up when paired with the right engine and driving habits.
The 23-Gallon Standard Capacity
If you own a 2WD SuperCab or a standard SuperCrew without a towing package, there is a high probability you have the 23-gallon tank. This size is ideal for weight savings, as fuel is heavy—roughly 6 pounds per gallon. A full 23-gallon tank weighs about 138 pounds, which keeps your payload capacity higher for actual gear.
However, for off-roaders, the 23-gallon tank can be a limitation. When you are airing down tires and crawling through soft sand, your miles-per-gallon (MPG) will drop significantly. In these scenarios, that 23-gallon capacity disappears faster than you might expect, making jerry cans a mandatory addition to your bed rack.
The 36-Gallon Extended Range Option
For those who live for the open road, the 36-gallon tank is a game-changer. It is most commonly found on 4WD SuperCrew models equipped with the 3.5L EcoBoost or the 5.0L V8. This tank is physically much longer than the standard version, taking up more space along the driver-side frame rail.
This tank is the favorite for anyone pulling a travel trailer. Towing can cut your fuel economy in half, so having 36 gallons of unleaded fuel ensures you aren’t stopping at every other gas station. It provides peace of mind when traveling through “no service” zones in the American West or northern territories.
How to Verify Your 2017 ford f150 fuel tank size
If you are unsure which tank your truck has, you don’t need to drain it to find out. There are several reliable ways to confirm your 2017 ford f150 fuel tank size without getting your hands too dirty. The most accurate method is checking your Vehicle Identification Number (VIN) through a Ford-specific decoder.
Another quick way is to look at your instrument cluster’s “Distance to Empty” (DTE) screen right after a full fill-up. If your DTE shows 500-700 miles, you almost certainly have the 36-gallon tank. If it maxes out around 350-450 miles, you are likely working with the 23-gallon or 26-gallon variant.
You can also perform a physical inspection. Slide under the driver’s side of the truck and look at the fuel tank. A 23-gallon tank is relatively short and ends well before the transfer case area on 4WD models. The 36-gallon tank is noticeably long, extending much further down the frame rail toward the rear of the cab.
- Window Sticker: If you still have the original Monroney label, it will explicitly list “36 Gallon Fuel Tank” under the optional equipment section.
- FordPass App: Registering your VIN in the FordPass app can sometimes provide detailed build specifications, including fluid capacities.
- Dealership Inquiry: Give your local Ford parts department a call with your VIN; they can pull up the exact build sheet for your chassis.
The Impact of Fuel Tank Size on Towing and Payload
One detail many DIYers overlook is how the 2017 ford f150 fuel tank size affects the truck’s legal payload capacity. Every pound of fuel you carry is a pound you cannot carry in the bed. A full 36-gallon tank weighs approximately 216 pounds, whereas the 23-gallon tank weighs 138 pounds.
This 78-pound difference might seem negligible, but when you are at the limit of your Gross Vehicle Weight Rating (GVWR), every ounce counts. If you have a heavily modded off-road rig with steel bumpers, a winch, and a roof-top tent, that extra fuel weight is something you must factor into your suspension tuning and tire pressure.
On the flip side, the utility of the larger tank for towing is unmatched. When pulling a 7,000-pound trailer, your fuel economy might dip to 9 or 10 MPG. With a 23-gallon tank, your “safe” range is only about 200 miles. With the 36-gallon tank, you can comfortably push 300 miles between stops, which is much safer for long-haul transit.
- Calculate your average MPG: Use your trip computer over 500 miles of mixed driving.
- Multiply by capacity: Multiply that MPG by your tank size (e.g., 18 MPG x 36 Gallons = 648 miles).
- Subtract a safety margin: Always leave at least 3-5 gallons as a “reserve” to keep the fuel pump cool and avoid sucking up sediment.
Real-World Range: What to Expect from Your F-150
Your actual range will vary wildly depending on which engine is paired with your 2017 ford f150 fuel tank size. The 2.7L EcoBoost is known for impressive efficiency when empty, often achieving over 22 MPG on the highway. Paired with a 36-gallon tank, that is a theoretical range of nearly 800 miles.
The 5.0L V8 and the high-output 3.5L EcoBoost (found in the Raptor) are thirstier. If you are running 35-inch all-terrain tires and a leveling kit, your aerodynamics are compromised. In these cases, even the large tank feels necessary just to maintain a standard 400-mile cruising range.
For off-road enthusiasts, range is about time, not just miles. If you are spending the day in low-range 4WD, your “miles per gallon” becomes “gallons per hour.” Understanding your capacity allows you to decide if you need to carry extra RotopaX containers on your bed rack before heading into the backcountry.
Upgrading Your Fuel Capacity: Is it Possible?
If you discovered your 2017 ford f150 fuel tank size is only 23 gallons and you need more, you do have options. Many owners choose to perform a “tank swap.” This involves sourcing a 36-gallon tank from a salvaged 2017 F-150 and installing it in place of the smaller one.
This isn’t a simple “plug and play” job for everyone. You will need the larger tank, the corresponding fuel sending unit, and the longer heat shields. Most importantly, you must use a tool like FORScan to reprogram the truck’s computer. If you don’t update the PCM, your fuel gauge and “Distance to Empty” will be completely inaccurate.
There are also aftermarket companies like Transfer Flow or S&B Tanks that offer high-capacity replacement tanks. These can sometimes push your capacity to 40 gallons or more. These are typically made of high-density cross-linked polyethylene and are designed to withstand the rigors of off-roading and heavy debris.
Tools Needed for a DIY Tank Swap
If you decide to tackle a tank swap in your home garage, safety is paramount. Ensure the tank is as empty as possible before starting. You will need a floor jack with a wide transmission adapter or a specialized fuel tank jack to support the weight while you undo the straps.
Basic hand tools, including a socket set and fuel line disconnect tools, are required. Always perform this work in a well-ventilated area and keep a fire extinguisher nearby. If you are uncomfortable working around flammable vapors or high-pressure fuel lines, this is a job best left to a professional mechanic.
Common Issues Related to the F-150 Fuel System
Regardless of your 2017 ford f150 fuel tank size, the fuel system requires periodic attention. One common issue for the 2017 model is the Evaporative Emission (EVAP) system. If you have trouble filling the tank (the pump keeps clicking off), your charcoal canister might be clogged or the vent valve could be stuck.
Another thing to watch for is fuel pump longevity. The fuel pump is submerged in the tank, using the gasoline itself as a coolant. If you constantly run your tank down to the “E” mark, the pump can overheat. This is especially true for the 36-gallon tank, where the fuel can slosh away from the pump on steep inclines when levels are low.
Keep an eye out for any lingering smell of gasoline around the rear of the cab. While rare, fuel tank straps can corrode in “salt belt” states, leading to a loose tank. A quick visual inspection during every oil change can prevent a catastrophic failure on the highway.
Frequently Asked Questions About 2017 ford f150 fuel tank size
Can I put a 36-gallon tank in a Regular Cab Short Bed?
Generally, no. The 36-gallon tank is physically too long for the short wheelbase of the Regular Cab Short Bed (RCSB). The frame geometry and the location of the driveshaft and exhaust components limit the space available for the extended-range tank.
How much fuel is left when the light comes on?
On most 2017 F-150s, the low fuel warning triggers when there are approximately 1/16th of a tank remaining, or roughly 50 miles of range. For the 36-gallon tank, this means you might still have 2-4 gallons left in reserve. However, you should never rely on this “buffer” as it can vary based on driving conditions.
Does the 2017 Raptor have a different tank size?
The 2017 Ford Raptor comes standard with a 26-gallon tank on the SuperCab models and a 36-gallon tank on the SuperCrew models. Given the Raptor’s high-performance 3.5L EcoBoost and lower MPG, the 36-gallon tank is highly recommended for any Raptor owner planning on desert pre-running.
Is the fuel tank plastic or metal?
The fuel tanks in the 2017 F-150 are made of high-grade, multi-layer plastic (HDPE). This material is preferred because it is lighter than steel, does not rust, and can be molded into complex shapes to maximize volume within the frame rails.
Final Thoughts on Your F-150’s Fuel Capacity
Understanding your 2017 ford f150 fuel tank size is about more than just knowing how much a fill-up will cost. It is about knowing the limits of your vehicle and having the confidence to push those limits when necessary. Whether you are sticking with the standard 23-gallon tank or enjoying the massive range of the 36-gallon version, your truck is a tool designed for work and play.
Take the time to verify your capacity using your VIN or a quick look under the chassis. Knowing your range will make you a better tower, a safer off-roader, and a more prepared traveler. If you find your current tank isn’t meeting your needs, remember that upgrades are possible with a bit of DIY spirit or professional help.
Stay safe on the roads, keep an eye on that gauge, and enjoy the incredible versatility that the 2017 Ford F-150 provides. Happy trucking!
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