These Are the Least Efficient Models From Every Automotive Brand

You can expect to get 17 city/21 highway/19 combined from Acura’s performance crossover. Its 3.0-liter twin-turbo V6 isn’t as thirsty as you might expect, but its 4,788-pound curb weight in top trims could be a factor in its mileage not being any better.

The nearly $90,000 midsize crossover claims to be the fastest SUV in the U.S. While that might sting some automakers, the Quadrifoglio won’t sting you as much at the pump. Its 505 hp 2.9-liter twin-turbo V6 gets 17 city/23 highway/19 combined, and it weights just over 4,300 pounds.

Audi was a toss up. Most of the higher S and RS models were pretty thirsty. But the RS Q8 nearly gets the same fuel economy as the V10-powered R8. The RS Q8 gets powered by a 4.0-liter twin-turbo V8 with 591 hp, but it weighs nearly 5,500 pounds, so it gets just 13 city/20 highway/16 combined.

At BMW, it’s a tie between the X5 M and X6 M. Both get identical 13 city/18 highway/15 combined fuel economy ratings. It makes sense, since they’re closely related. So close that both get powered by the same twin turbo 4.4-liter V8 with 617 hp. The X5 M is slight heavier, though, at 5,455 pounds to the X6 M’s 5,375 pounds.

Buick doesn’t make the land yachts of yore (we miss you Park Avenue and Roadmaster), so the biggest and thirstiest Buick you can buy now is the three-row Enclave Avenir with all wheel drive. It gets a not-bad 17 city/25 highway/20 combined from its 3.6-liter 310 hp V6. The Enclave also weighs 4,478 pounds.

You had to have known what was going to be here with Cadillac. While a normal Escalade is already a thirsty monster, the V takes it to another level. It gets just 11 city/16 highway/13 combined from its 6.2-liter V8. What’s unknown though is whether these figures are for the standard Escalade-V or the long wheelbase Escalade-V ESV. It matters, as 190 pounds of weight separates the standard V (6,217p pounds) from the ESV (6,407 pounds).

If you guessed something like Corvette ZR1 or a Suburban would be the thirstiest Chevy, you’d have been right a couple of years ago. But the introduction of the off-road-focused Silverado ZR2 changed that. Equipping the 5,620 pound pickup with mud tires screws up your gas mileage. Expect to get just 11 city/14 highway/12 combined from the 6.2-liter 420 hp V8.

While anything Hellcat is going to get shit mileage, you’d be surprised at who the worst and thirstiest offender is. Anyone with Charger SRT Hellcat Redeye Widebody can expect to get just 12 city/ 21 highway/15 combined from the 797-hp, 6.2-liter supercharged V8-powered muscle sedan. Weight could have something to do with it too as the Hellcat Redeye Widebody tips the scales at 5,500 pounds.

While the F-150 Raptor R gets the worst fuel economy in the Ford lineup, it’s technically not on sale until the end of the year. Until then, the Shelby GT500 takes the thirsty crown. The most powerful Mustang ever made gets just 12 city/18 highway/14 combined from its 5.2-liter supercharged V8. While I would share the weight of the GT500, Ford doesn’t have it listed for reasons I don’t quite know.

Genesis has a strange situation with regard to which of its models has the worst gas mileage. On one hand, you have the G90 luxury sedan with the 3.5-liter turbocharged V6 getting 17 city/24 highway/20 combined. And then on the other, you have the full-size GV80 crossover getting one mpg better in the city than the G90 but one mpg worse on the highway. Genesis is also another automaker that doesn’t list the curb weights of its vehicles.

Much like its Chevy Silverado ZR2 cousin, the off-road focused GMC Sierra AT4X is thirsty. The combo of the 6.2-liter, 420-hp V8, off-road tires and 5,400 pound curb weight combine to cause the AT4X to get just 12 city/15 highway/13 combined.

Nearly everything Honda makes gets great gas mileage. So calling out the Ridgeline for being the worst isn’t as bad as you’d think. Being a unibody-based truck helps things. Its 3.5-liter 280 hp V6 gets 18 city/24 highway/21 combined. Even with all-wheel drive, the Ridgeline won’t weigh more than 4,510 pounds.

The thirstiest vehicle over at Hyundai is unsurprisingly the full-size Palisade crossover. Despite its rather large dimensions, it’s not as thirsty as you’d think. You can expect to get 19 city/25 highway/21 combined from its 3.8-liter V6. Despite being over 16 feet long, the Palasaide weighs just over 4,350 pounds.

At Infiniti, it’s no surprise the QX80 gets the worst fuel mileage in the lineup. With the old bones this thing is riding on (despite two refreshes, the SUV you see here is the same one that was introduced back in 2010), it’s practically a dinosaur on wheels, and it loves drinking the dino juice. Its 5.6-liter 400 hp V8 has to move around just over 6,000 pounds. That’s why the QX80 will just get 13 city/19 highway/15 combined.

A 4,700-pound performance crossover powered by a supercharged 550 hp V8? Of course you’re going to live at the gas station. You can expect 15 city/21 highway/17 combined out of the F-Pace SVR.

Just recently this would’ve been a draw between the Wrangler Rubicon 392 and the Grand Wagoneer. But Jeep seems to have dropped the thirsty 6.4-liter V8 from the Grand Wagoneer lineup for ‘23, replacing it with the Hurricane I6. That means the Wrangler Rubicon 392 is the least efficient Jeep you can buy now. Expect to get just 13 city/17 highway/14 combined. Blame it on the aerodynamics of a brick, huge off-road tires, and a 6.4-liter V8 having to move all 5,103 pounds of it.

Here we have yet another draw where two different models are one mpg off of each other, the Stinger and Telluride. If you go for the Stinger GT, its 3.3-liter twin-turbo V6 will get 17 city/24 highway/20 combined. Its corporate cousin Telluride is not far off. Its 3.8-liter V6 will get 18 city/24 highway/21 combined. Just 346 pounds separates the curb weights of the Stinger (4,146) and Telluride (4,522).

You’d be wrong if you figured that the least fuel-efficient vehicle over at Land Rover was a Range Rover. It’s actually the Defender 110 V8. Dropping a 5.0-liter supercharged V8 into SUV shaped like a brick means owners are going to spend a lot of time at the gas station. The 5,735-pound SUV gets just 14 city/19 highway/16 combined.

The GX is most likely the oldest model in the entire Lexus lineup. While it’s a good, old school SUV in its off-road chops and reliability, its age comes back to haunt it at the gas pump. A 4.6-liter, 301-hp V8 powering a 5,130 pound SUV with a high center of gravity means the GX will get just 15 city/19 highway/16 combined.

While the Navigator no longer uses a V8 engine, it’s still a big thirsty SUV. Its 3.5-liter twin-turbo Ecoboost V6 is powerful, but that engine’s 440 hp still has to move around 5,600 to 6,000 pounds of SUV. This results in the Navigator getting 16 city/22 highway/18 combined.

Mazda’s full-size crossover is the thirstiest in the Japanese brand’s lineup. But given the size of the CX-9, it could be way worse. With a 2.5-liter 250 hp turbocharged I4 moving just over 4,400 pounds, the CX-9 will get 20 city/26 highway/23 combined.

While Mercedes has plenty of big-engined, high-powered AMG models that don’t get great gas mileage, the G-Wagon is the king of them all. This 5,842-pound brick gets powered by a 4.0-liter twin-turbo V8 putting out 577 hp. While it may sound great, the result of that is 14 city/18 highway/15 combined.

You don’t expect a Mini Cooper to be a gas guzzler. Thank God it still isn’t. But at Mini performance comes with a downgrade in fuel economy. Its 301 hp turbocharged engine has to move around just 3,144 pounds. And while the John Cooper Works has the worst mileage in the Mini lineup, it still isn’t bad at 22 city/31 highway/25 combined.

The... interestingly styled crossover with a legendary name is the least efficient vehicle at Mitsubishi. There aren’t many options to choose from with the brand’s three vehicle lineup. But going for the Eclipse Cross will get you slightly worse fuel economy than the larger Outlander. Its 1.5-liter I4 only has 152 hp and has to move around 3,500 pounds of crossover. Expect to get 25 city/26 highway/25 combined from the Eclipse Cross.

Like its Infiniti QX80 brother, the Armada is old and thirsty. Its 5.6-liter, 400-hp V8 has to move around nearly 6,000 pounds of SUV. That’ll result in an Armada driver always being at the gas station. Expect to get 13 city/18 highway/15 combined from the Armada.

While you probably thought something like a Cayenne or Panamera Gran Turismo model would be the thirstiest over at Porsche, they aren’t. Dig into the extensive 911 lineup, and you’ll find that the least efficient Porsche is the 911 GT3 Touring. While it weighs just over 3,100 pounds, it has a 4.0-liter 502 hp flat six-out back. You can expect 14 city/ 18 highway/ 16 combined from this toned down GT3.

Subaru is another automaker where two different models get the same mileage. The recently redesigned WRX gets the same gas mileage as the seven-seat Ascent crossover. They’re both powered by a 2.4-liter turbocharged boxer engine. The WRX makes 271 hp while the Ascent has 260 hp. You can expect to get 19 city/25 highway/21 combined from the 3,400 pound WRX and the 4,500 pound Ascent.

The redesign of the Tundra/Sequoia and their adoption of a hybrid V6 has helped them avoid being crowned the least efficient at Toyota. That crown goes to another ancient SUV, the 4Runner. Specifically the 4Runner TRD Pro. An equally old 4.0-liter 270 hp V6 paired with a five speed automatic, all-terrain tires, and a 4,750-pound curb weight are the likely culprits behind its thirst. Expect to get 17 city/19 highway/17 combined.

VW finally gave the U.S. a product specifically for Americans in 2017 with the intro of the Atlas. Surprisingly large and roomy, it’s equally thirsty at the gas pump. When equipped with 4motion all wheel drive and the 3.6-liter 276 hp VR6 engine, you can expect 18 city/23 highway/20 combined from the 4,594 pound crossover.

The seven-seat XC90 is the least efficient Volvo you can buy. This might not mean much now since the brand is headed toward an all electric lineup. The XC90 B6 gets powered by a complicated supercharged and turbocharged 2.0-liter I4 with a hybrid setup. Its 295 hp has to move around 4,522 pounds of crossover, resulting in 20 city/26 highway/22 combined.