2026 BMW X7 vs Mercedes GLS: Which Luxury SUV Wins?

If you’re shopping for a three-row luxury SUV, the 2026 BMW X7 and 2026 Mercedes-Benz GLS are likely at the top of your list. Both deliver premium comfort, strong performance, and advanced technology, but which is the better fit for your lifestyle? 

Let’s take a closer look at how they compare in space, features, performance, and value so you can make an informed decision.

Interior Space and Comfort

When it comes to full-size luxury SUVs, passenger comfort is a top priority, especially in the third row.

BMW X7

The X7 offers three spacious rows of seating for up to seven passengers. Even adults will find the third row surprisingly accommodating, with easy access thanks to BMW’s power-sliding second-row seats. High-quality materials are standard, and available options include Merino leather upholstery, heated and ventilated seats, and four-zone automatic climate control.

Mercedes-Benz GLS

The GLS also seats up to seven and features a roomy cabin with fine materials. While the second row is very comfortable, the third row is better suited for kids or shorter trips for adults.

Verdict: If you need a truly usable third row for family or friends, the BMW X7 has the edge in passenger space and accessibility.

Technology and Infotainment

Luxury buyers expect cutting-edge tech—and both SUVs deliver.

BMW X7

Standard is BMW’s Curved Display, pairing a 12.3-inch driver display with a 14.9-inch central touchscreen powered by iDrive 8.5. You get wireless Apple CarPlay® and Android Auto™, cloud-based navigation, and an available Bowers & Wilkins Diamond Surround Sound System. The X7 also features BMW’s latest Driving Assistance Professional Package for semi-automated driving support.

Mercedes GLS

The GLS uses the MBUX infotainment system with dual 12.3-inch screens, voice control, and wireless smartphone integration. It’s an excellent system but requires more menu navigation for certain functions.

Verdict: Both are tech-heavy, but the BMW X7’s interface feels cleaner and more intuitive, especially when paired with BMW’s gesture controls and responsive menus.

Performance and Power

Performance is where both SUVs flex their engineering muscle.

• BMW X7: Offers multiple powertrains:
  • xDrive40i: 375 horsepower turbocharged inline-6
  • M60i: 523 horsepower twin-turbo V8
  • ALPINA XB7: 631 horsepower for incredible acceleration

All come standard with xDrive all-wheel drive and an 8-speed automatic transmission. Ride quality is smooth yet sporty thanks to two-axle air suspension.

• Mercedes GLS: Available with:
  • GLS 450: 375 horsepower inline-6 with mild hybrid
  • GLS 580: 510 horsepower twin-turbo V8 with mild hybrid
  • Mercedes-AMG GLS 63: 603 horsepower twin-turbo V8

The GLS offers a plush ride but leans more toward comfort than sportiness.

Verdict: Both offer strong engines, but BMW’s chassis tuning and handling dynamics make the X7 more engaging for drivers who like precision with their luxury.

Fuel Economy and Efficiency

• BMW X7: The xDrive40i returns an EPA-estimated 21 mpg city / 25 mpg highway, while V8 options drop slightly due to added power.
• Mercedes GLS: Similar numbers for the GLS 450 at 20 mpg city / 25 mpg highway, with V8 models using more fuel.

Verdict: Nearly a tie here, but BMW’s inline-6 edges ahead in real-world efficiency thanks to its refined tuning.

Towing and Capability

• BMW X7: Properly equipped, can tow up to 7,500 pounds, perfect for boats, trailers, or campers.
• Mercedes GLS: Also tows up to 7,500 pounds with the right package.

Verdict: Equal capability, so your choice will come down to ride feel and cabin comfort.

Pricing and Value

Pricing for both models is competitive in the full-size luxury SUV space:

• BMW X7: Starts around $83,500 for the xDrive40i, climbing to over $150,000 for the ALPINA XB7.
• Mercedes GLS: Starts around $87,000 for the GLS 450, topping $145,000 for the AMG GLS 63.

Considering its interior space, engaging performance, and standard features, the BMW X7 delivers strong value, especially in its base and mid-tier trims.

Long-Term Ownership and Maintenance

Every new BMW X7 comes with BMW Ultimate Care, covering scheduled maintenance for the first 3 years or 36,000 miles. That includes services like oil changes, inspections, and more at no extra cost. Mercedes offers similar complimentary maintenance plans for a limited time, but BMW’s combination of service coverage and dealership expertise here in St. Louis makes it easy to keep your SUV in top shape.

At BMW of West St. Louis, our factory-trained technicians use Genuine BMW Parts, and our service team knows the X7 inside and out. From routine care to advanced diagnostics, we’re equipped to keep your luxury SUV performing like new.

Which SUV Fits Your Lifestyle?

If you want:

• A truly usable third row for adult passengers
• Driver-focused handling without sacrificing ride comfort
• A balanced blend of tech, luxury, and capability

…then the 2026 BMW X7 is a clear choice.

If you prioritize:

• Ultra-plush ride comfort above sportiness
• A bold, classic Mercedes design
• Brand loyalty to Mercedes-Benz

…the GLS will fit the bill.

Experience the 2026 BMW X7 in St. Louis

At BMW of West St. Louis, we make it easy to compare the BMW X7 with other luxury SUVs and find the one that’s perfect for you. From the moment you walk into our showroom, our knowledgeable product specialists are ready to guide you through every trim, performance option, and available package, showing you exactly why the X7 continues to set the standard for three-row luxury. You’ll have the chance to explore our wide selection of 2026 BMW X7 models, learn about our flexible financing and lease options, and enjoy a premium test drive experience that’s tailored to your needs.

Schedule your test drive today and feel the difference for yourself.