The 12 Worst Gas-Guzzling Cars

Some of the cars with the worst fuel efficiency are the 2022 Ram 1500 TRX and the 2021 Bugatti Chiron Pur Sport.
Written by Brittni Brinn
Reviewed by Jessica Barrett
Some of the worst gas-guzzling cars are the Chevrolet Colorado ZR2, the Ford F-150 Raptor, the Toyota Sequoia, the Toyota Tundra 4WD, and the 2022 Ram 1500 TRX. 
There’s nothing like driving a supercar down an empty highway—but these speedy cars are notorious for guzzling gas. Sports cars aren’t the only culprits for poor fuel economy, however—SUVs and trucks can be gas guzzlers too! If you’re looking to save money at the pump, you’re going to want to avoid vehicles that prioritize flash over fuel efficiency.
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12. 2022 Chevrolet Colorado ZR2

Miles per gallon: City 16 mpg, Highway 18 mpg
Engine specs: A 3.6-liter V-6 engine with 308 horsepower and 275 pound-feet of torque
The
Chevrolet Colorado ZR2
is a bonafide off-roader sporting raised suspension, an electronically locking rear differential, and all-terrain tires. Here are some of this guzzler’s pros and cons:
  • Pros: A pickup truck with nimble and responsive handling on and off the road, the well-positioned driver's seat provides a comfortable driving experience no matter where you drive.
  • Cons: The engine is underpowered and noisy, the interior is unremarkable, and safety features are lacking.

11. 2021 Ford Mustang Shelby GT500

Miles per gallon: City 12 mpg, Highway 18 mpg
Engine specs:  A supercharged 5.2-liter V-8 engine with 760 horsepower and 625 pound-feet of torque
Even though the Shelby GT500 is at the top of the
Mustang
line, it’s one of the worst-performing when it comes to fuel efficiency. Here are some reasons to get (or not to get) a Shelby GT500:
  • Pros: The engine power on this muscle car is incredible and provides an impressive sporty driving experience.
  • Cons: Fuel economy is the main drawback of this car, along with the exorbitant price tag and expensive add-on packages.
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10. 2022 BMW X6 M

Miles per gallon: City 13 mpg, Highway 18 mpg
Engine specs: Turbocharged 4.4-liter eight-cylinder engine producing 600+ horsepower
The
BMW X6 M
is an SUV with a heck of a lot more driving power thanks to its adaptive suspension and adjustable driving modes. Here are the best and worst features of this fuel-hungry vehicle:
  • Pros: Impressive engine performance with a classy and tech-savvy interior.
  • Cons: Seeing out of the rear window is awkward. Not as much cabin and cargo space as the X5 M but is more expensive.

9. 2022 Bentley Bentayga Speed

Miles per gallon: City 12 mpg, Highway 18 mpg
Engine specs: A 6.0-liter W-12 engine with 626 horsepower and 663 pound-feet of torque
A luxury SUV, the Bentayga Speed provides an exciting driving experience in spite of its terrible fuel economy. Here are some highs and lows of this model:
  • Pros: Luxurious interior, two solid engine choices, capable SUV.
  • Cons: The exterior design isn’t everyone’s cup of tea. The total price is more expensive than other luxury SUVs and driver-assistance features aren’t included.

8. 2021 Ford F-150 Raptor

Miles per gallon: City 15 mpg, Highway 18 mpg
Engine specs: Twin-turbo 3.5-liter V-6 EcoBoost engine with 450 horsepower and 510 pound-feet of torque
An off-roader with a bulkier build, the
Ford F-150 Raptor
is a truck that means business. Here are the best and worst parts of owning one of these gas guzzlers:
  • Pros: A fantastic off-roader, the Raptor has an appealing interior with plenty of tech features fitting for a modern vehicle
  • Cons: Apart from its poor fuel economy, the Raptor’s main flaw is that on-road driving doesn’t have the same ease when the Raptor is in its off-road element.

7. 2021 Jeep Grand Cherokee Trackhawk

Miles per gallon: City 11 mpg, Highway 17 mpg
Engine specs: A supercharged 6.2-liter V-8 with 707 horsepower and 645 pound-feet of torque
Built for high speeds, the Grand Cherokee Trackhawk has built-in Launch Control and other useful features such as a lane-departure warning system and self-parking assist. Here are the highlights and low points for this gas-guzzling machine:
  • Pros: An SUV that can tow up to 7200 pounds, the Trackhawk has roomy and comfortable seating as well as thrilling acceleration and engine capabilities.
  • Cons: In addition to its poor fuel economy, the Trackhawk is limited by its AWD and stiff handling.

6. 2022 Toyota Sequoia

Miles per gallon: City 13 mpg, Highway 17 mpg
Engine specs: 5.7-liter V-8 engine with 381 horsepower and 401 pound-feet of torque
The
Toyota Sequoia
is a three-row SUV that offers a sport trim with a tuned suspension system. Take a look at what else the Sequoia has to offer as well as what it is lacking:
  • Pros: All seating has enough legroom for adult passengers. The Sequoia also comes with prime safety features and a reliable engine.
  • Cons: The Sequoia is behind the times when it comes to its infotainment system and the interior leaves much to be desired. The Sequoia does not perform well on uneven or gravel roadways.

5. 2021 Toyota Tundra 4WD

Miles per gallon: City 13 mpg, Highway 17 mpg
Engine specs: 5.7-liter V8 
A truck with a reliable reputation, the
Toyota Tundra
4WD is a capable off-road vehicle. Here are the best and worst parts of driving a Tundra:
  • Pros: The Tundra comes with a comprehensive pack of standard features. The back seat is massive with plenty of room to bring the family or a group of friends along on your off-roading adventures.
  • Cons: The interior quality is worse than other vehicles in its class. Even though this old-fashioned truck will scratch your off-roading itch, it may disappoint when driving on the highway.
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4. 2021 Mercedes-Benz AMG G 63

Miles per gallon: City 13 mpg, Highway 16 mpg
Engine specs: A twin-turbo 4.0-liter V-8 engine with 577 horsepower and 627 pound-feet of torque
A performance line SUV, the
Mercedes-Benz AMG G 63
is a quirky yet stylish ride that almost makes you forgive how poor its fuel economy is. Take a look at what you can expect from this gas guzzler:
  • Pros: The boxy exterior gives the G 63 a flavor all its own. Its square shape doesn’t stop it from having impressive acceleration and off-road capabilities.
  • Cons: The G 63 runs noisy and doesn’t take corners well. In addition to being a gas-guzzling fiend, the G 63 is quite expensive.

3. 2021 Lamborghini Aventador

Miles per gallon: City 9 mpg, Highway 15 mpg
Engine specs: A 6.5-liter V-12 with 730+ horsepower and 509 lb-ft of torque
There’s no doubt about it—the Lamborghini Aventador is an absolute thrill to drive. But there are some cons to be aware of as well:
  • Pros: A nimble car for its size, the Aventador oozes supercar glamor.
  • Cons: The roof is clunky to remove. The Aventador doesn’t have much in the way of storage space and the transmission can be temperamental. 

2. 2022 Ram 1500 TRX

Miles per gallon: City 10 mpg, Highway 14 mpg
Engine specs: A supercharged 6.2-liter HEMI V-8 with 702 horsepower and 650 pound-feet of torque
The least fuel-efficient truck in its class, the
Ram 1500 TRX
specializes in off-road driving. Here are the best and worst things about this gas guzzler:
  • Pros: The TRX’s impressive acceleration reaches 60 mph in 3.7 seconds. The luxurious cabin is also a stand-out feature of this monster of a truck.
  • Cons: Because it’s built wider than other trucks, the TRX can be tricky to maneuver in parking lots and other close-quarter driving scenarios. The TRX also is missing a handful of features that are standard in comparable models.

1. 2021 Bugatti Chiron Pur Sport

Miles per gallon: City 8 mpg, Highway 10mpg
Engine specs: A quad-turbocharged 8.0-liter W-16 engine with 1,500 horsepower and 1,180 pound-feet of torque. 
A supercar that is nowhere near being fuel-efficient, the Bugatti Chiron Pur Sport tops our list as the worst gas-guzzler of them all. To finish off our survey of the cars with the worst fuel economies, here are the pros and cons of this speedy and expensive sports car:
  • Pros: The exterior style and engine performance are sublime, and the interior is top-notch.
  • Cons: Despite its extremely high price tag, the only tech features included with a Chiron Pur Sport are a nav-computer and sound system. The cargo space is also limited.

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