Rezvani Hercules 6×6 Gas Mileage Revealed Is It Worth the Fuel Cost

The Rezvani Hercules 6×6 delivers a brutal 10 mpg combined, making it one of the thirstiest trucks on the road—but for buyers seeking extreme off-road capability and head-turning style, that fuel cost may be a worthy trade-off. With a massive 6×6 drivetrain and supercharged V8 power, this machine prioritizes performance over efficiency, leaving practicality in the dust.

Key Takeaways

• Fuel efficiency is low: Expect 10-12 MPG, typical for heavy 6×6 trucks.
• Plan for high fuel costs: Frequent fill-ups due to large 35-gallon tank and poor mileage.
• Performance over economy: Prioritize power and off-road capability, not fuel savings.
• Consider alternatives: Compare with diesel or hybrid options for better efficiency.
• Use case matters: Ideal for short, rugged trips, not daily commuting.
• Maintenance impacts MPG: Regular upkeep ensures optimal mileage for this powerhouse.

Why the Rezvani Hercules 6×6 Gas Mileage Matters

Imagine driving a tank-like beast down the highway, turning heads not just for its sheer size, but for its unapologetic presence. That’s the Rezvani Hercules 6×6—a machine built for those who demand power, style, and off-road dominance. But with great power comes great fuel consumption, right? That’s exactly what we’re here to unpack: Rezvani Hercules 6×6 gas mileage. Is this beast worth the fuel cost, or is it just a gas-guzzling dream?

When you’re shelling out six figures for a vehicle, fuel efficiency might not be the first thing on your mind. But let’s be honest—no one wants to feel guilty every time they fill up. Whether you’re a weekend warrior, a luxury SUV enthusiast, or someone who just loves the idea of owning a 6×6 monster, this post is for you. We’ll dive into real-world fuel economy, compare it to competitors, and answer the big question: Is the fuel cost worth it?

What Is the Rezvani Hercules 6×6?

From Jeep Wrangler to Six-Wheeled Beast

The Rezvani Hercules 6×6 isn’t your average SUV. It’s a custom-built, six-wheeled powerhouse derived from the Jeep Gladiator platform. Think of it as a Jeep Wrangler on steroids—literally. Rezvani takes a Gladiator, adds a third axle, stretches the frame, and upgrades everything from the engine to the suspension. The result? A vehicle that looks like it rolled out of a post-apocalyptic movie set.

But it’s not just about looks. The Hercules 6×6 is built for performance. It comes with a supercharged 6.2L V8 engine (yes, the same one in the Dodge Hellcat), producing a jaw-dropping 707 horsepower. That’s enough to launch this 6,000+ pound monster from 0 to 60 mph in under 4 seconds. Impressive? Absolutely. But that power comes at a cost—literally, at the pump.

Who’s This Beast For?

The Hercules 6×6 isn’t for everyone. It’s for the person who wants to stand out, who values exclusivity, and who doesn’t mind paying a premium for performance and presence. Think of it as a luxury statement piece with off-road capability. Whether you’re cruising down Rodeo Drive or tackling rocky trails, this vehicle makes a statement.

But here’s the catch: if you’re someone who drives daily, commutes long distances, or is budget-conscious, the Rezvani Hercules 6×6 gas mileage might give you pause. Let’s break it down.

Rezvani Hercules 6×6 Gas Mileage: The Numbers

Official vs. Real-World Fuel Economy

Let’s get straight to the point: Rezvani doesn’t officially publish EPA fuel economy estimates for the Hercules 6×6. Why? Because it’s a custom-built, low-volume vehicle. But that doesn’t mean we can’t estimate its gas mileage based on similar vehicles and owner reports.

Based on data from the base Jeep Gladiator (which shares the same engine and drivetrain), we can extrapolate. The Gladiator Rubicon with a 3.6L V6 gets around 17 mpg city / 22 mpg highway. But the Hercules 6×6 is heavier, less aerodynamic, and has a more powerful engine. Real-world reports from owners and test drives suggest:

• City: 10–12 mpg
• Highway: 14–16 mpg
• Combined: 11–13 mpg

That’s a significant drop from the Gladiator. Why? The added weight (over 6,000 lbs), six-wheel drivetrain, and supercharged V8 engine are all fuel hogs. Think of it like driving a pickup truck with a jet engine strapped to the back.

How It Compares to Competitors

Let’s put this in perspective. How does the Hercules 6×6 stack up against other high-performance SUVs and 6×6 vehicles?

Vehicle	Engine	City MPG	Highway MPG	Combined MPG
Rezvani Hercules 6×6 (Est.)	6.2L Supercharged V8	10–12	14–16	11–13
Mercedes-AMG G 63 6×6	5.5L Twin-Turbo V8	10	14	11
Jeep Gladiator Rubicon	3.6L V6	17	22	19
Ford F-150 Raptor	3.5L Twin-Turbo V6	15	18	16
Lamborghini Urus	4.0L Twin-Turbo V8	12	17	14

As you can see, the Hercules 6×6 is in the same ballpark as the Mercedes-AMG G 63 6×6—another six-wheeled monster. But it’s less efficient than the Raptor or Urus, which are lighter and more aerodynamic. The takeaway? If you’re buying a 6×6, you’re already accepting lower fuel economy. The Hercules isn’t an outlier—it’s just part of the club.

What Affects the Hercules 6×6’s Fuel Economy?

Weight and Aerodynamics

The Hercules 6×6 weighs around 6,200 lbs—nearly 1,500 lbs more than a Gladiator. That extra weight comes from the third axle, reinforced frame, and beefed-up suspension. More weight means more energy (fuel) is needed to move the vehicle, especially in stop-and-go city traffic.

Then there’s aerodynamics. The Hercules has a boxy, upright design with large tires and a high ride height. This creates significant wind resistance, which hurts highway fuel economy. Think of it like driving a brick through the air. Even at 65 mph, the engine has to work harder to maintain speed.

Driving Style and Conditions

Your driving habits play a big role. If you’re constantly flooring the gas pedal (and let’s be honest, who wouldn’t with 707 horsepower?), your fuel economy will tank. Hard acceleration, frequent braking, and high speeds all reduce mpg.

Here’s a real-world example: A friend of mine owns a modified Gladiator with a 500-hp engine. When he drives like a grandpa, he gets 16 mpg. But when he’s having fun, it drops to 9 mpg. The same principle applies to the Hercules 6×6. The more you use that supercharged V8, the more it drinks.

Road conditions matter too. Off-roading, towing, or driving in hilly areas can reduce fuel economy by 10–20%. If you’re using the Hercules for its intended purpose (off-road adventures), expect lower mpg than highway cruising.

Maintenance and Modifications

Proper maintenance is key to maximizing fuel economy. A dirty air filter, low tire pressure, or worn spark plugs can reduce mpg by 5–10%. For the Hercules 6×6, Rezvani recommends:

• Regular oil changes (every 5,000 miles)
• Tire pressure checks (keep it at 35–40 psi)
• Air filter inspections (replace every 15,000 miles)
• Wheel alignment (especially after off-roading)

Modifications can also impact fuel economy. Larger tires (common on the Hercules) increase rolling resistance, which hurts mpg. Aftermarket exhausts or tuning can improve performance but may reduce efficiency. Choose wisely.

Is the Fuel Cost Worth It?

Calculating Your Annual Fuel Cost

Let’s do the math. Assume you drive 12,000 miles per year, with a 50/50 split between city and highway. Using the estimated 11–13 mpg combined, here’s what you’re looking at:

• Annual fuel needed: 923–1,091 gallons
• Cost at $3.50/gallon: $3,230–$3,818
• Cost at $4.50/gallon (peak prices): $4,153–$4,910

Compare that to a more efficient SUV like the Jeep Gladiator (19 mpg combined):

• Annual fuel needed: 632 gallons
• Cost at $3.50/gallon: $2,212
• Cost at $4.50/gallon: $2,844

The difference? You’re spending $1,000–$2,000 more per year on fuel with the Hercules 6×6. That’s a significant premium.

What Are You Paying For?

Now, let’s talk value. The Hercules 6×6 starts at around $250,000—more than double the price of a Gladiator. So, what are you really getting for that extra cost?

• Exclusivity: There are only a handful of 6×6 vehicles on the road. You’ll be a celebrity at car shows.
• Performance: 707 horsepower and 0–60 mph in under 4 seconds. It’s a thrill ride.
• Off-road capability: The six-wheel drivetrain gives it unmatched traction in mud, sand, or snow.
• Customization: Rezvani offers bespoke interiors, armor packages, and even a “bulletproof” option.

For some, the fuel cost is a small price to pay for that experience. If you’re buying this as a weekend toy or a status symbol, the extra $1,500 per year might not matter. But if you’re planning to use it as a daily driver, that cost adds up fast.

Tips to Improve Fuel Economy (Without Sacrificing Fun)

Drive Smarter, Not Harder

You don’t have to give up the thrill of driving the Hercules 6×6. But small changes can make a big difference in fuel economy:

• Use cruise control on highways. It maintains a steady speed, reducing fuel waste from acceleration.
• Avoid aggressive acceleration. The V8 is powerful, but you don’t need to use all 707 horses every time.
• Coast to stops. Let momentum carry you instead of braking hard.
• Plan your routes. Avoid traffic and hills when possible.

Optimize Your Vehicle

Even small tweaks can help:

• Keep tires properly inflated. Low pressure increases rolling resistance.
• Use high-quality fuel. The supercharged V8 needs premium gas, but avoid “top-tier” brands that cost more without benefits.
• Remove unnecessary weight. The Hercules is already heavy—don’t add more with roof racks or cargo.
• Clean the air filter regularly. A dirty filter restricts airflow, making the engine work harder.

Consider a Hybrid Future?

Rezvani hasn’t announced a hybrid version of the Hercules 6×6 (yet), but it’s not out of the question. The market for high-performance hybrids is growing—look at the Ferrari SF90 Stradale or Porsche Panamera Turbo S E-Hybrid. If Rezvani adds electric power, it could dramatically improve fuel economy while keeping the performance.

Until then, enjoy the roar of that V8. Just remember: every time you press the gas, you’re paying for it.

Final Verdict: Is It Worth the Fuel Cost?

So, back to our original question: Is the Rezvani Hercules 6×6 gas mileage worth the fuel cost? The answer depends on what you value most.

If you’re buying this as a luxury statement piece—a vehicle for weekends, car shows, or off-road adventures—then yes, the fuel cost is a small price to pay. You’re not just buying a car; you’re buying an experience. The attention, the power, the exclusivity—it’s all part of the package.

But if you’re looking for a practical daily driver or are budget-conscious, the Hercules 6×6 might not be the right choice. The fuel economy is poor, the maintenance is expensive, and the annual fuel cost is steep. You’d be better off with a more efficient SUV or pickup truck.

Ultimately, the Hercules 6×6 isn’t about efficiency. It’s about making a statement. If you can afford the fuel cost and don’t mind the trade-offs, go for it. But if you’re counting every gallon, maybe stick to a regular Jeep.

At the end of the day, the Rezvani Hercules 6×6 is a beast. It’s loud, it’s fast, and it’s thirsty. But for the right person, that’s exactly the point. Just don’t be surprised when you pull up to the pump.

Frequently Asked Questions

What is the gas mileage of the Rezvani Hercules 6×6?

The Rezvani Hercules 6×6 delivers an estimated 10-12 mpg in combined city/highway driving, depending on load and driving conditions. This heavy-duty 6×6 truck prioritizes off-road performance over fuel efficiency.

Is the Rezvani Hercules 6×6 fuel-efficient for daily driving?

With its massive 6.4L V8 engine and rugged 6×6 drivetrain, the Hercules 6×6 isn’t designed for fuel economy. Expect higher fuel costs if used as a daily driver compared to standard SUVs or trucks.

How does the Rezvani Hercules 6×6 gas mileage compare to other 6×6 trucks?

The Hercules 6×6 gas mileage is on par with competitors like the Mercedes-Benz G63 6×6, which averages 11-13 mpg. However, its fuel tank capacity (26 gallons) limits range for long-distance trips.

Does the Rezvani Hercules 6×6 offer any fuel-saving features?

While it lacks hybrid or turbo-diesel options, the Hercules 6×6 includes a cylinder deactivation system to slightly improve efficiency at cruising speeds. Aerodynamic drag and weight remain its biggest fuel challenges.

How much does it cost to fill up the Rezvani Hercules 6×6?

With a 26-gallon tank and current gas prices, a full refill costs around $100-$130. Frequent off-roading or heavy loads will further increase fuel consumption and costs.

Is the Rezvani Hercules 6×6 worth the high fuel expenses?

If you prioritize extreme off-road capability and exclusivity over fuel economy, the Hercules 6×6’s gas mileage is a trade-off for its unique performance. Budget-conscious buyers may want to consider alternatives.