Here’s How Far The Thirstiest Full Size SUVs Can Go On A Tank Of Gas

A few months back, we brought you this story on the thirstiest SUVs of 2025, hunting down ten machines with the heaviest fuel consumption on the market from automakers like Bentley, Audi, and Jeep, with the Ferrari Purosangue taking the unpalatable cake. Below, we’re revisiting each, calculator in hand, to see how far they can drive on a tank of gas. While each of the choices below will satisfy the shopper after extremes of SUV firepower and feats of acceleration, you’ve got better choices when maximum MPGs are a priority.

11

2025 Chevrolet Suburban/GMC Yukon XL

420–532 Miles

The GMC Yukon XL/Chevy Suburban are basically twins, despite the different logos on their hoods. They both offer the same selection of engines, including the optional 3.0-liter Duramax turbodiesel. Though not quite as strong as the V8 selection, at least in terms of straight acceleration, it is a capable powerplant that still lets the full-size SUVs hit their maximum towing capacities of 8,200 lbs. It also has the added benefit of significantly better fuel economy, so while the Yukon XL and Suburban rank poorly when looking at their gasoline engines, they can actually cover a rather impressive 644 miles with the Duramax. Of course, this assumes you drive them responsibly, which shouldn’t be too hard, considering they are, first and foremost, family three-row SUVs. If you opt for the 5.3-liter V8, you won’t likely get more than 476 miles, while the 6.2-liter V8 tops out at 448 miles.

10

2025 Jeep Grand Wagoneer

371–530 Miles

All Wagoneer models now boast Stellantis Hurricane power from a new breed of straight-six turbo engine. The highest-output version of these gives top-grade Wagoneer models 510 horsepower and 8,200 pounds of towing capacity. You’ll pay for that at the pumps, with annual fuel costs approaching the $4,000 mark, according to the EPA. The Grand Wagoneer’s 26.5-gallon fuel tank is good for 530 miles of highway cruising or 371 miles of city driving. Assuming you hit the combined 17 MPG rating, that’s 451 miles between fill-ups.

9

2025 Audi SQ7 / SQ8

338–473 miles

The SQ7 and SQ8 run a familiar recipe for power: twin-turbo V8 engines of four-liter displacement can be found under the hoods of each, packing an even 500 horsepower and nearly 600 lb-ft of torque, alongside the same annual thirst for about $3,600 worth of premium unleaded. The 2025 model year brings an update to headlight technology for both models, too. These are some of the highest-performing SUVs Audi has ever built, and if you hit the combined fuel economy rating of 17 MPG, then it’s 382 miles between fill-ups. Highway cruising stretches the range of a tank to 473 miles, and in city driving, you’ll go around 338 miles before it’s time to stop and fill up.

8

2025 Bentley Bentayga

315–473 miles

Here’s yet another 22.5-gallon fuel tank, this one attached to a 4.0-liter twin-turbo V8 under the hood of the Bentley Bentayga. Good for 542 horsepower and an annual gas bill approaching $4,000, its 16 MPG combined rating means 360 miles of driving between fill-ups under normal conditions. As a highway cruiser, look for just over 470 miles of range. If you use a Bentayga mostly for commuting and city driving, you’ll go about 315 miles between gas stops. As the saying goes, “if you want to play, you’ve got to pay,” and that’s the cost of satisfying the appetite of one of the most powerful and luxurious SUVs on the road.

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7

2025 Rolls-Royce Cullinan

286–452 Miles

The twin-turbo V12 is alive and well beneath the hood of the mighty Rolls-Royce Cullinan – a machine built to be nothing less than the ultimate luxury SUV on the road. Feeding its 12 cylinders is no cheap task, however. The $4,350 annual gas bill proves as much: 14 MPG combined fuel economy and a 23.8-gallon gas tank are good for 333 miles of driving before empty, with 450 miles to a tank possible on the highway, and just 286 miles in the city. Of course, an annual fuel bill of $4,350 is petty changes when you consider the $348,500 it takes just to drive this luxury barge off the dealership floor.

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6

2025 Aston Martin DBX 707

338–450 Miles

With the better part of 700 horsepower gushing from its 4.0-liter twin-turbo V8, the Aston Martin DBX 707 is an expert at turning gasoline into forward thrust at a rapid pace. Designed to challenge the world’s fastest SUVs, it’ll do a combined 17 MPG according to EPA data. With a 22.5-gallon fuel tank, that means drivers hitting the ‘combined’ rating can go 383 miles on a tank of fuel. If a highway cruise is in the books, make it 450 miles between gas stops. In city traffic? You’ll need to top off every 338 miles or so. Mind the $3,600 annual fuel cost of this one.

5

2025 Mercedes-AMG G63

370–422 Miles

The 2025 Mercedes-AMG G63 is one of the world’s ultimate 4x4s, and a recent update has made it more appealing than ever. The twin-turbo engine in the ‘G-Wagon’ delivers the better part of 600 horsepower in exchange for an annual fuel bill exceeding $4,000. Remember, this one’s built on a tough ladder-frame structure. The highest-performing version of one of the world’s most capable off-roaders ships with a 26.4-gallon gas tank, good for 422 miles of highway cruising, 370 miles of city driving, or 396 miles between fill-ups when drivers hit the combined MPG figure.

4

2025 Dodge Durango Hellcat

295–418 miles

The insanely quick Durango SRT Hellcat is one of the fastest three-row SUVs on the planet, with 710 supercharged horsepower and standard AWD. A new Brass Monkey edition is available for 2025. You can do a lot of cool stuff with this much power, but be careful with your right foot or the Durango SRT Hellcat’s gas bill might just turn your wallet inside out. The 24.6-gallon gas tank will last you 320 miles if you achieve the combined 13 MPG rating, and 418 miles on the highway. In the city? Expect this machine to make 24.6 gallons of gas disappear in 295 miles or less.

3

2025 Cadillac Escalade-V

264–408 miles

The soundtrack of the supercharged V8 in the Escalade-V has a way of tempting drivers to shove their foot to the firewall, unleashing the explosive thrust of 682 horsepower on the pavement beneath. By stuffing a race-car engine into one of the world’s most popular luxury SUVs and supporting it with targeted performance upgrades, the resulting extreme-performance version of the Cadillac Escalade sure isn’t shy about laying down some serious numbers, or putting away some serious fuel. A combined 13 MPG and an annual gas bill approaching $5,000 mean your investment in this machine comes with some serious thirst. Achieve the combined fuel economy figure, and you’ll be lucky to drive 315 miles on a tank. On the highway, 24 gallons of gas will last you almost 410 miles. In the city? The Escalade V’s tank is empty at 264 miles or less.

2

2025 Ferrari Purosangue

290–396 miles

The Ferrari Purosangue has a larger-than-average gas tank, which saves it from some truly low start-to-finish figures. This is the thirstiest unit on your page, with a big, free-breathing V12 engine sucking back over $5,000 per year worth of premium unleaded. You’ll do 15 MPG on the highway, a measly 11 MPG in the city and 12 MPG combined. However, it manages to beat out the last spot in terms of max range thanks to that extra tank capacity. The 26.4-gallon gas tank is empty in 396 miles or less on the highway, and in about 317 miles if you achieve the combined 15 MPG figure. If you drive solely in the city, you’ll be lucky to see 290 miles from a tank.