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2026 Mercedes-Benz GLS vs. BMW X7

2026 Mercedes-Benz GLS in desert
2026 Mercedes-Benz GLS Vs. 2026 BMW X7
375 hp (3.0L inline-6 turbo w/ mild hybrid drive) Standard Engine Horsepower 375 hp (3.0L BMW TwinPower Turbo inline-6)
510 hp (4.0L V8 biturbo w/ mild hybrid drive)

603 hp (Handcrafted AMG® 4.0L V8 biturbo w/ hybrid assist)

Available Engine Horsepower 523 hp (4.4L BMW M TwinPower Turbo V8)

631 hp (4.4L BMW ALPINA Bi-Turbo V8)

19 / 24 / 21 mpg* (3.0L inline-6 turbo w/ mild hybrid drive) Standard Fuel Economy (city/highway/combined mpg) 21 / 25 / 23 mpg (3.0L BMW TwinPower Turbo inline-6)

Key Takeaways

  • The 2026 Mercedes-Benz GLS provides a maximum towing capacity of 7,700 pounds, pulling ahead of the BMW X7 for heavy-duty trips.
  • Both luxury 3-row SUVs offer potent mild-hybrid powertrains and advanced standard all-wheel-drive systems.
  • The GLS prioritizes a serene cabin environment with superior front-row legroom and highly customizable passenger configurations.

Whether you are a daily commuter, an active family, or a weekend adventurer, a luxury 3-row SUV will elevate your driving experience in Larchmont and beyond. Two longtime standouts in the segment are the Mercedes-Benz GLS and the BMW X7. While each one delivers driving refinement in a stylish package, there are some notable differences between the GLS and X7 to be aware of. Our team at Mercedes-Benz of New Rochelle explores these differences in detail below.

2026 Mercedes-Benz GLS Vs. BMW X7: Performance

When it comes to performance, you’ll find these flagship 3-row SUVs offer plenty of performance for your local drives around Mamaroneck and long-distance trips across the state. Both models are available with a turbocharged I6 engine, as well as a twin-turbo V8 offered in two power levels: automatic transmissions and standard all-wheel-drive systems route power to all four wheels. Although there isn’t much difference between the GLS and X7 power and fuel economy ratings, Mercedes-Benz is known for its smooth and reliable powertrains. Compare the performance specs and capabilities of the 2026 Mercedes-Benz GLS vs. the BMW X7 below:

Mercedes-Benz GLS

450 4MATIC® SUV

  • 3.0L inline-6 turbo engine with mild hybrid drive
  • 375 hp @ 5,800-6,100 rpm
  • 369 lb-ft of torque @ 1,800-5,000 rpm
  • 9G-TRONIC automatic transmission with shift paddles
  • 4MATIC® fully variable all-wheel drive
  • 0-60 mph in 5.8 seconds*
  • 7,700-pound towing capacity**
  • 19 mpg city / 24 mpg highway / 21 mpg combined***

GLS 580 4MATIC® SUV

  • 4.0L V8 biturbo engine with mild hybrid drive
  • 510 hp @ 5,500 rpm
  • 538 lb-ft of torque @ 2,000-4,000 rpm
  • 9G-TRONIC automatic transmission with shift paddles
  • 4MATIC® fully variable all-wheel drive
  • 0-60 mph in 4.7 seconds*
  • 7,700-pound towing capacity**
  • 14 mpg city / 20 mpg highway / 16 mpg combined***

AMG® GLS 63 SUV

  • Handcrafted AMG® 4.0L V8 biturbo engine with hybrid assist
  • 603 hp @ 5,750-6,500 rpm
  • 627 lb-ft of torque @ 2,500-4,500 rpm
  • AMG® SPEEDSHIFT® TCT 9G transmission
  • AMG® Performance 4MATIC®+ all-wheel drive
  • 0-60 mph in 4.1 seconds*
  • 7,700-pound towing capacity**
  • 15 mpg city / 20 mpg highway / 17 mpg combined***

BMW X7

xDrive40i

  • 3.0L BMW TwinPower Turbo inline 6-cylinder
  • 375 hp @ 5,200-6,250 rpm
  • 398 lb-ft of torque @ 1,850-5,000 rpm
  • 8-speed Sport Automatic transmission with Sport and Manual shift modes, steering wheel-mounted paddle shifters, and Launch Control
  • xDrive all-wheel-drive system
  • 0-60 mph in 5.6 seconds
  • 7,500-pound towing capacity
  • 21 mpg city / 25 mpg highway / 23 mpg combined

X7M60i

  • 4.4L BMW M TwinPower Turbo V-8
  • 523 hp @ 5,500-6,000 rpm
  • 553 lb-ft of torque @ 1,800-4,600 rpm
  • 8-speed Sport Automatic transmission with Sport and Manual shift modes, steering wheel-mounted paddle shifters, and Launch Control
  • xDrive all-wheel-drive system
  • 0-60 mph in 4.5 seconds
  • 7,500-pound towing capacity
  • 16 mpg city / 20 mpg highway / 18 mpg combined

ALPINA XB7

  • 4.4L BMW ALPINA Bi-Turbo V-8
  • 631 hp @ 5,600-6,500 rpm
  • 590 lb-ft of torque @ 1,800-5,600 rpm
  • Reinforced 8-speed Sport Automatic transmission with Automatic, Sport, and Manual shift modes, including ALPINA SWITCH-TRONIC software with quick-shift buttons
  • xDrive all-wheel-drive system
  • 0-60 mph in 3.9 seconds
  • 7,500-pound towing capacity
  • 16 mpg city / 20 mpg highway / 17 mpg combined

2026 Mercedes-Benz GLS Vs. BMW X7: Comfort

When it comes to interior comfort and convenience, both models swaddle their occupants in high-end materials, while heated, ventilated, and massaging seats keep the driver and front passenger comfortable on every drive to Mount Vernon. Additionally, both flagship 3-row SUVs are available with 6- or 7-passenger seating and mult-zone climate controls for each seating area. The main difference between the GLS and X7 interiors is the available space. Compare the 2026 Mercedes-Benz GLS vs. BMW X7 interior dimensions and cargo volume to see where the GLS trumps the X7 in overall room below:

Mercedes-Benz GLS

  • Seating Capacity: 7 passengers (6 optional)
  • Cargo Volume: 84.7 cubic feet / 42.7 cubic feet / 17.4 cubic feet
  • Headroom (1st/2nd/3rd row): 39.4 inches / 40.2 inches / 38.9 inches
  • Shoulder Room (1st/2nd/3rd row): 59.3 inches / 58.5 inches / 50.3 inches
  • Legroom (1st/2nd/3rd row): 40.3 inches / 41.9 inches / 34.6 inches

BMW X7

  • Seating Capacity: 7 (6 with optional second-row Captain’s Chairs)
  • Cargo Volume (behind first/second/third row): 90.4 cubic feet / 48.6 cubic feet / 12.8 cubic feet
  • Headroom (1st/2nd/3rd row): 41.9 inches / 39.9 inches / 36.6 inches
  • Shoulder room (1st/2nd/3rd row): 60.0 inches / 58.1 inches / 47.9 inches
  • Legroom (1st/2nd/3rd row): 38.8 inches / 37.6 inches / 33.3 inches

What is the main difference between the 2026 Mercedes-Benz GLS and BMW X7?

The main difference is their focus on the road: the 2026 Mercedes-Benz GLS prioritizes ultimate ride comfort, slightly higher maximum towing capacity, and a serene cabin environment, while the BMW X7 leans towards a firmer, sportier driving dynamic with a driver-focused interior layout.

Test-Drive The Mercedes-Benz GLS In New Rochelle

We have covered just a sampling of the ways the GLS will take every drive to the heights of performance and luxury. Contact us to schedule a test drive or visit our showroom at your convenience. We also invite you to apply for financing and calculate your payments now to streamline the buying process. We know you will agree that the Mercedes-Benz GLS, inside and out, is without rival in the premium 3-row SUV class.

Disclaimers:

*Stated rates of acceleration are estimated based upon manufacturer’s track results and may vary depending on model, environmental and road surface conditions, driving style, elevation and vehicle load.

**With optional trailer hitch. Read Operator’s Manual before towing. In some states, aftermarket trailer brakes are required. See dealer for details.

***EPA estimated fuel economy. Compare the estimated mpg to the estimated mpg of other vehicles. You may get different mileage depending on how fast you drive, weather conditions and trip length. Your actual highway mileage will probably be less than the highway estimate.


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