
When renting a U-Haul truck, it’s essential to know the correct fuel type to avoid damage and ensure optimal performance. Most U-Haul trucks run on regular unleaded gasoline, typically with an octane rating of 87 or higher. However, larger trucks, such as the 26-foot models, often require diesel fuel. Always check the fuel cap or the rental agreement for specific instructions, as using the wrong fuel can lead to costly repairs. Additionally, U-Haul recommends refueling the truck to the same level as when you picked it up to avoid extra charges. Understanding the fuel requirements ensures a smooth and hassle-free moving experience.
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What You'll Learn
- Gasoline vs. Diesel: Uhaul trucks typically use gasoline, but some larger models may require diesel fuel
- Fuel Efficiency Tips: Maintain steady speeds, avoid idling, and reduce cargo weight to improve fuel efficiency
- Fuel Tank Capacity: Uhaul trucks have varying tank sizes; check your rental for specific capacity details
- Refueling Requirements: Return the truck with the same fuel level as when picked up to avoid fees
- Recommended Fuel Types: Use regular unleaded gasoline for most Uhaul trucks unless specified otherwise

Gasoline vs. Diesel: Uhaul trucks typically use gasoline, but some larger models may require diesel fuel
Uhaul trucks primarily run on gasoline, a fact that simplifies the fueling process for most renters. Gasoline is widely available at stations across the country, making it convenient for short-distance moves or trips that don’t require extensive planning. For smaller to mid-sized Uhaul models, such as the 10-foot and 15-foot trucks, gasoline engines are the standard. These trucks are designed for efficiency and ease of use, with fuel tanks typically holding around 30 to 40 gallons, depending on the model. This means you can travel approximately 300 to 500 miles on a single tank, depending on driving conditions and load weight.
However, when it comes to larger Uhaul trucks, such as the 20-foot and 26-foot models, diesel fuel may be required. Diesel engines are favored for heavier loads and longer distances due to their superior torque and fuel efficiency. A diesel-powered Uhaul truck can often achieve better mileage, especially when hauling significant weight, with fuel tanks ranging from 50 to 70 gallons. This translates to a range of 600 to 800 miles per tank, reducing the need for frequent stops during cross-country moves. While diesel fuel is slightly more expensive per gallon than gasoline, the improved efficiency can offset the cost for longer trips.
Choosing between gasoline and diesel for your Uhaul rental depends on your specific needs. If you’re moving locally or transporting a lighter load, a gasoline-powered truck is likely the more practical and cost-effective option. For long-distance moves or heavy cargo, a diesel-powered truck may be worth the investment. Always check the fuel requirements of your specific Uhaul model before renting to avoid surprises. Additionally, plan your route to ensure access to the correct fuel type, especially in rural areas where diesel stations may be less common.
One practical tip for renters is to monitor fuel consumption closely, especially with diesel trucks. Diesel engines tend to have a higher initial cost but can save money over time due to better fuel economy. For gasoline trucks, consider refueling when the tank reaches half full to avoid running low during your move. Always keep a fuel log to track expenses, as Uhaul requires the truck to be returned with the same fuel level as when it was picked up. By understanding the fuel requirements of your Uhaul truck, you can ensure a smoother, more efficient moving experience.
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Fuel Efficiency Tips: Maintain steady speeds, avoid idling, and reduce cargo weight to improve fuel efficiency
U-Haul trucks are designed to handle a variety of tasks, from local moves to cross-country hauls, but their fuel efficiency can be a concern, especially when covering long distances. One of the most effective ways to optimize fuel usage is by maintaining steady speeds. Rapid acceleration and frequent braking can significantly decrease fuel efficiency, as the engine works harder to regain momentum. For instance, driving at a consistent 55 mph can improve fuel efficiency by up to 20% compared to driving at 70 mph. Cruise control can be a valuable tool here, helping you maintain a steady speed on highways and reducing the temptation to speed up unnecessarily.
Idling is another fuel efficiency killer that often goes unnoticed. A U-Haul truck’s engine consumes about 0.5 gallons of fuel per hour when idling, which adds up quickly during stops. To combat this, turn off the engine if you anticipate being stationary for more than a minute, such as during loading or unloading. Modern U-Haul trucks are equipped with fuel-injected engines that start efficiently, so restarting won’t harm the vehicle. Additionally, planning your route to minimize stop-and-go traffic can further reduce idling time and save fuel.
Reducing cargo weight is a straightforward yet impactful way to enhance fuel efficiency. Every extra 100 pounds in a U-Haul truck can decrease fuel efficiency by up to 1%. Before loading, evaluate what you truly need to transport and discard or donate unnecessary items. For example, replacing heavy furniture with lighter alternatives or consolidating smaller items into fewer boxes can make a noticeable difference. U-Haul trucks have weight limits, so staying within these guidelines not only improves fuel efficiency but also ensures safer driving.
Combining these strategies can yield significant savings on fuel costs. For a 1,000-mile trip, maintaining steady speeds, avoiding idling, and reducing cargo weight by 500 pounds could save up to 10 gallons of fuel, depending on the truck size and driving conditions. U-Haul trucks typically run on regular unleaded gasoline, so these efficiency measures directly translate to financial savings. By adopting these habits, you not only reduce expenses but also minimize your environmental footprint, making your move more sustainable.
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Fuel Tank Capacity: Uhaul trucks have varying tank sizes; check your rental for specific capacity details
Uhaul trucks are not one-size-fits-all, and neither are their fuel tanks. A 10-foot truck might hold 30 gallons, while a 26-foot model could require up to 60 gallons. Knowing your specific rental’s capacity is critical for budgeting and trip planning. Always check the vehicle’s documentation or consult the rental agreement for precise details.
Imagine embarking on a cross-country move only to realize halfway through that your truck’s tank is smaller than expected. This oversight could lead to unnecessary stops, increased fuel costs, and added stress. To avoid this, verify the tank size before departure and plan refueling stops accordingly. Apps like GasBuddy or Waze can help locate affordable fuel stations along your route.
Fuel tank capacity directly impacts your travel strategy. For instance, a 30-gallon tank on a 10-foot truck might allow 300–400 miles per fill-up, depending on fuel efficiency (typically 8–12 mpg). In contrast, a 26-foot truck with a 60-gallon tank could cover 600–700 miles but will cost significantly more to fill. Factor in these variables when estimating your fuel budget and time allocation.
A practical tip: Always return the truck with the same fuel level as when you picked it up to avoid additional charges. If the tank is ¾ full at pickup, refill it to that level before returning. Use the fuel gauge as your guide, but remember that larger tanks may require more fuel to reach the same level. This simple step can save you from unexpected fees and ensure a smooth rental experience.
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Refueling Requirements: Return the truck with the same fuel level as when picked up to avoid fees
U-Haul trucks are designed to run on unleaded gasoline, specifically 87 octane or higher. This is a critical detail to remember when you’re refueling, as using the wrong fuel type can void your rental agreement and lead to costly repairs. However, the more pressing concern for most renters isn’t the type of fuel but the fuel level at return. U-Haul’s policy is straightforward: return the truck with the same fuel level as when you picked it up, or face fees that can quickly add up. For example, if you return the truck with a quarter tank less than it started with, U-Haul charges a refueling fee based on their own rates, which are typically higher than local gas station prices.
To avoid these fees, document the fuel level at pickup with a photo or written note. U-Haul trucks often have fuel gauges that are less precise than personal vehicles, so a visual record can prevent disputes. If the truck is returned with more fuel than it started with, U-Haul does not reimburse the difference, so aim for precision rather than overfilling. A practical tip is to refuel within 10 miles of the drop-off location to ensure the gauge stabilizes before return.
The refueling requirement isn’t just a policy—it’s a fairness mechanism. U-Haul operates on a shared-use model, meaning the next renter relies on the fuel level left by the previous one. Returning the truck with insufficient fuel disrupts this system, forcing U-Haul to refuel at their expense, which is then passed on to the next customer. By adhering to this rule, you contribute to a smoother rental experience for everyone.
For those who struggle with estimating fuel needs, consider this analytical approach: calculate the round-trip distance and factor in the truck’s average fuel efficiency, which ranges from 8 to 12 miles per gallon depending on the model. For instance, a 26-foot truck averaging 8 mpg on a 50-mile trip will consume approximately 6.25 gallons. Refueling to the exact level becomes easier when you plan ahead with these specifics.
Finally, a persuasive argument: refueling correctly is cheaper and less stressful than paying U-Haul’s fees. A gallon of gas at a local station averages $3 to $4, while U-Haul’s refueling fee can be $5 to $7 per gallon, depending on location. Spending a few minutes to refuel saves you money and avoids the hassle of disputing charges later. In the end, this simple step ensures your rental experience ends on a positive note, with no surprises on your final bill.
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$496.75

Recommended Fuel Types: Use regular unleaded gasoline for most Uhaul trucks unless specified otherwise
U-Haul trucks are designed with versatility in mind, but their fuel requirements are surprisingly straightforward. For the vast majority of U-Haul trucks, regular unleaded gasoline is the recommended fuel type. This includes popular models like the 10-foot, 15-foot, and 20-foot trucks, which are commonly used for local and one-way moves. The simplicity of this requirement is a boon for renters, as regular unleaded gasoline is widely available at most gas stations, eliminating the need for specialized fuel searches during your move.
While it might be tempting to opt for premium gasoline thinking it could enhance performance, U-Haul explicitly advises against this for most of their trucks. Regular unleaded gasoline, typically with an octane rating of 87, is sufficient to power these vehicles efficiently. Using premium fuel (91+ octane) won’t provide additional benefits and will only increase your fuel costs unnecessarily. This recommendation aligns with the trucks’ engine specifications, which are optimized for standard gasoline to balance performance and fuel economy.
There are exceptions to this rule, however. Some larger U-Haul trucks, such as the 26-foot models, may require diesel fuel. These trucks are equipped with diesel engines, which are more powerful and better suited for hauling heavier loads over long distances. If you’re renting a larger truck, always double-check the fuel type specified on the vehicle or in your rental agreement. Using the wrong fuel type can cause severe engine damage, void your rental agreement, and lead to costly repairs.
To ensure a smooth rental experience, follow these practical tips: always confirm the fuel type before filling up, keep your receipt as proof of using the correct fuel, and plan your route to include gas stations that offer the required fuel type. For regular unleaded gasoline, this is rarely an issue, but for diesel, it’s wise to locate stations in advance, especially if you’re traveling through rural areas. Additionally, avoid letting the fuel gauge drop too low, as running out of fuel can incur additional fees and inconvenience.
In summary, sticking to regular unleaded gasoline for most U-Haul trucks is a simple yet critical aspect of your rental experience. It ensures optimal performance, avoids unnecessary expenses, and keeps your move on track. By understanding and adhering to these fuel recommendations, you’ll not only protect the vehicle but also streamline your moving process, allowing you to focus on what truly matters—getting to your destination safely and efficiently.
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Frequently asked questions
Most U-Haul trucks use regular unleaded gasoline, but some larger models may require diesel fuel. Always check the fuel cap or the rental agreement for the specific type.
U-Haul trucks are designed to run on regular unleaded gasoline, so premium fuel is not necessary and will not provide additional benefits.
If the truck requires diesel, it will be clearly marked on the fuel cap or in the rental agreement. Larger trucks like the 26-foot models often use diesel, while smaller ones typically use gasoline.











































