Fuel efficiency is becoming an essential aspect of automotive design, as drivers seek to reduce their environmental impact and save money on fuel. In the used car market, vehicles with poor fuel economy may not seem like the most attractive option.
However, if you’re considering purchasing a high-performance or luxury vehicle, it’s important to understand that your fuel efficiency may be less than ideal.
Many used cars from various automotive segments have been notorious for their poor fuel economy over the years, ranging from luxury sedans to high-performance supercars.
These cars may offer remarkable performance, features, and exquisite designs, but at the cost of increased fuel consumption. In this guide, we will examine 15 used cars that are notorious for their low fuel efficiency.
Key Takeaways
- Poor fuel efficiency is common in high-performance and luxury used cars
- These 15 vehicles demonstrate increased fuel consumption despite their appealing features
- Consider the trade-off between performance and fuel economy when shopping for a used car
Understanding Fuel Economy
The Role of EPA in Fuel Efficiency
The EPA plays a crucial role in regulating and improving fuel efficiency. They set standards, conduct fuel-efficiency tests, and ensure that automakers comply with the regulations.
Measuring Miles Per Gallon
To measure your car’s fuel economy, simply divide the number of miles traveled by the gallons of fuel consumed. Vehicles with higher miles per gallon ratings are considered more fuel-efficient and environmentally friendly.
Hummer H2 (2003-2009)
The Hummer H2 is known for its rugged off-road capabilities, but don’t expect great fuel efficiency. With a large 6.0L V8 engine, the H2 gets about 10 mpg in city driving and 13 mpg on the highway.
You’ll want to consider this when planning your budget for fuel expenses. However, if you value its unique design and off-road prowess, the Hummer H2 can still be an appealing choice. Just keep in mind its fuel efficiency might not be as friendly to your wallet.
RELATED: These Are The Best and Worst Hummer H2 Years To Avoid!
Dodge Challenger SRT Hellcat (2015-present)
The Dodge Challenger SRT Hellcat is known for its powerful engine, but it’s not the most fuel-efficient option. With a 6.2L Supercharged HEMI V8 engine, you can expect 13 mpg in the city and 22 mpg on the highway.
- City: 13 mpg
- Highway: 22 mpg
When purchasing a used Hellcat, make sure to factor in fuel costs as your expenses might add up faster than you think. Regardless, you’ll definitely enjoy the thrilling driving experience it provides.
RELATED: Here Are the Worst Dodge Challenger Years to Avoid and Problems!
Lamborghini Aventador (2011-present)
If you’re looking for a car with the worst fuel efficiency, the Lamborghini Aventador is certainly a contender. The powerful supercar boasts a 6.5-liter V12 engine, which results in impressive performance but isn’t great for the environment or your wallet.
In fact, this beauty is known to have an estimated fuel mileage of 9 city/15 highway miles per gallon (mpg). Its incredible acceleration and top speed come at a cost, making it one of the 15 used cars with the worst fuel efficiency.
It’s important to remember that the Lamborghini Aventador wasn’t designed to be fuel efficient. Instead, its purpose is to provide you with an unforgettable driving experience.
Bugatti Veyron (2005-2015)
When considering used cars with low fuel efficiency, the Bugatti Veyron definitely stands out. This luxurious sports car, produced from 2005 to 2015, is known for its impressive speed and power.
However, with city mileage at just 8 miles per gallon and a combined average of 10 MPG, you might find yourself frequently refilling your tank. Despite its remarkable performance, the Bugatti Veyron is among the top contenders for least fuel-efficient vehicles.
Dodge Charger SRT Hellcat (2015-present)
The Dodge Charger SRT Hellcat is a power-packed performance car, known for its 6.2L V8 Supercharged engine. Despite its impressive horsepower, it falls short in terms of fuel efficiency. The 2015 model has a fuel economy of 13 mpg city and 22 mpg highway.
You’ll enjoy the exhilarating drive with the Hellcat, but remember to keep an eye on the fuel gauge! To cut down on fuel costs, use eco-mode and plan your trips efficiently. So go ahead, take the wheel, and enjoy the thrilling experience of driving this powerful machine – just don’t forget about its fuel consumption.
RELATED: Here Are The Worst Dodge Charger Years to Avoid for Used Models!
Bentley Mulsanne (2010-2020)
If you’re considering a Bentley Mulsanne from the years 2010 to 2020, be prepared for less-than-stellar fuel efficiency. Its 6.75-liter twin-turbocharged V8 engine offers an incredible 505 horsepower and 752 lb-ft of torque, but at the expense of fuel economy.
On the official WLTP Combined test, the Mulsanne returns up to 17.4 mpg. However, if you unleash its full potential, your real-world mileage may be closer to 10 mpg.
Despite its low fuel efficiency, this luxury sedan delivers unparalleled performance and comfort, making it a true flagship model. Just remember, along with high-class amenities comes a heftier price tag, both as an upfront cost and in terms of long-term maintenance.
Ferrari GTC4Lusso (2016-present)
The Ferrari GTC4Lusso is a luxurious grand tourer with a stunning design and incredible performance. However, if you’re concerned about fuel efficiency, this might not be the best choice for you. With a powerful V12 engine, the GTC4Lusso consumes a significant amount of fuel.
To put it into perspective, you can expect around 11-17 miles per gallon (mpg) from this model. This makes the GTC4Lusso one of the least fuel-efficient cars on the market. If you’re willing to sacrifice efficiency for an outstanding driving experience, this Ferrari might still be the perfect car for you.
Ford Mustang GT (various model years)
Friendly reminder: when searching for a used car, it’s important to consider fuel efficiency. The Ford Mustang GT (various model years) might not be your top choice if you’re looking for a fuel-sipper. Mustang GTs have varying fuel efficiency, depending on the model year.
For instance, the 2014 Mustang GT gets around 18 MPG combined. On the other hand, the 2005 version only manages about 16 MPG combined. Although it’s a fun ride, the fuel efficiency might not be ideal for your budget.
RELATED: Here Are The Worst Ford Mustang Years to Avoid for Used Models!
Rolls-Royce Phantom (2003-present)
When you think of luxury and elegance, the Rolls-Royce Phantom might come to mind. But, did you know it’s also known for its poor fuel efficiency? The Phantom’s mileage is estimated to be around 12-14 MPG. With such low fuel economy, it’s not the most eco-friendly option.
However, if you’re considering purchasing a used Phantom, don’t let fuel efficiency solely deter you. The car’s opulence, features, and comfort might still make it an appealing choice for your garage. Just remember to factor in the ongoing gas costs.
Chevrolet Camaro SS (various model years)
The Chevrolet Camaro SS is known for its powerful engine and stylish design. However, one aspect where it might not impress you is its fuel efficiency. With an average fuel consumption of 15 city / 24 highway mpg for the 2015 model, it is certainly not the most economical choice.
When considering different Camaro SS model years, it’s essential to note that fuel efficiency can vary. While the best model years for the Camaro are 2018 to 2024, the worst years for fuel consumption are 2010 to 2017.
Jeep Grand Cherokee Trackhawk (2018-present)
The Jeep Grand Cherokee Trackhawk is an impressive SUV, but it’s not the best choice for fuel efficiency. With a powerful engine and features like four-wheel-drive and ventilated seats, you’ll enjoy its performance at the cost of higher fuel consumption.
This 2018 Trackhawk boasts a
- Quad exhaust
- Lane departure warning
- Premium sound system
However, these luxury features don’t help its fuel efficiency. Keep this in mind if you’re considering the 2018 Jeep Grand Cherokee Trackhawk for your collection.
Maserati Levante (2016-present)
As you consider your next car purchase, it’s essential to factor in fuel efficiency, especially with the Maserati Levante. This luxury SUV, introduced in 2016, may not offer the best fuel economy. It comes with either a 345-hp or a 424-hp turbo V6 engine, contributing to its lower efficiency.
While you’ll enjoy a premium driving experience and stylish design, bear in mind the potential impact on your wallet and the environment.
Mercedes-AMG G63 (2002-present)
If you’re considering a used Mercedes-AMG G63, keep in mind that it’s known for its poor fuel efficiency. With a powerful V8 engine, this luxury SUV delivers an impressive performance, but at the cost of high fuel consumption.
In spite of its high-end features and off-road capabilities, the G63’s fuel economy remains a major drawback. So, if you’re looking for an eco-friendly option, the G63 might not be the best choice for you.
Porsche Cayenne Turbo (2003-present)
The Porsche Cayenne Turbo is known for its powerful performance, but it’s also notorious for its poor fuel efficiency. The 2003 model has a city fuel economy of 13 mpg and a highway fuel economy of 18 mpg. Over the years, fuel efficiency hasn’t improved much.
When considering a used Cayenne Turbo, keep in mind that you might be sacrificing efficiency for performance. With its luxurious features and sporty handling, it’s up to you to weigh the pros and cons.
Nissan Armada (2004-present)
The Nissan Armada is a full-size SUV that boasts impressive towing capabilities and various luxury features. However, its fuel efficiency falls short compared to other vehicles in its class.
As a potential buyer, you should know that the Armada has a combined MPG of just 15. This car requires frequent fueling, especially for long trips. Additionally, take note of the years to avoid: 2004, 2005, 2006, 2008, & 2017.
Toyota Sequoia 4WD
When looking for a used car, fuel efficiency might be a priority for you. However, the Toyota Sequoia 4WD might not be the best choice in this regard. With just 13 miles per gallon in the city and 18 on the highway, it’s not very fuel-efficient.
If you still consider this vehicle, keep in mind that its large size and powerful engine contribute to its poor fuel economy. Although it has some attractive features, such as spacious interiors and off-road capabilities, make sure to weigh the long-term fuel costs before making a decision.
