BMW X7 vs Mercedes-Benz GLS: Which Used SUV Is Better?
Buy the BMW X7 if you want the more athletic driving experience, stronger value in the U.S. used market, and a trim lineup that runs from a capable six-cylinder family SUV to an ultra-fast Alpina. Buy the Mercedes-Benz GLS if third-row comfort, a softer ride, and a more traditional full-size luxury SUV experience matter more.
The BMW X7 vs Mercedes-Benz GLS decision is not just about choosing between two luxury brands. Each model has several distinct versions, and a GLS 450 is not the right comparison for an X7 M60i or Alpina XB7.
This guide covers the full U.S. model runs: 2019–2026 BMW X7 and 2020–2026 Mercedes-Benz GLS. It includes the standard, V8, performance, and ultra-luxury versions, then separates official specifications from what real owners and service cases show buyers to inspect.
For more detailed model-specific information, read our used BMW X7 buying guide and Mercedes-Benz GLS buyer’s guide.
BMW X7 vs Mercedes-Benz GLS: Match the Right Trims
| BMW X7 | Best Mercedes-Benz GLS Comparison | Why |
|---|---|---|
| X7 xDrive40i | GLS 450 4MATIC | Turbocharged six-cylinder, three-row luxury SUVs for most buyers |
| X7 xDrive50i or M50i | GLS 580 4MATIC | Twin-turbo V8 performance and luxury |
| X7 M60i | GLS 580 4MATIC | Modern V8 flagship comparison, though BMW is more performance-focused |
| Alpina XB7 | Mercedes-AMG GLS 63 | High-performance three-row SUVs |
| No direct X7 equivalent | Mercedes-Maybach GLS 600 | The Maybach is built around rear-seat luxury, not X7-style driving dynamics |
The X7 and GLS both offer seven seats or an available six-seat layout with second-row captain’s chairs. All regular X7 models use BMW xDrive all-wheel drive and an eight-speed automatic. The GLS 450 and GLS 580 use 4MATIC all-wheel drive and Mercedes-Benz’s nine-speed automatic.
Official U.S. Trim and Performance Comparison
BMW X7 Trims, 2019–2026
| X7 Trim | U.S. Model Years | Engine | Horsepower / Torque | 0–60 mph |
|---|---|---|---|---|
| xDrive40i | 2019–2022 | 3.0L turbo inline-six | 335 hp / 330 lb-ft | 5.8 sec |
| xDrive50i | 2019 | 4.4L twin-turbo V8 | 456 hp / 479 lb-ft | 5.2 sec |
| M50i | 2020–2022 | 4.4L twin-turbo V8 | 523 hp / 553 lb-ft | 4.5 sec |
| Alpina XB7 | 2021–2022 | 4.4L bi-turbo V8 | 612 hp / 590 lb-ft | 4.0 sec |
| xDrive40i | 2023–2026 | 3.0L turbo mild-hybrid inline-six | 375 hp / 398 lb-ft | 5.6 sec |
| M60i | 2023–2026 | 3.0L turbo mild-hybrid inline-six | 523 hp / 553 lb-ft | 4.5 sec |
| Alpina XB7 | 2023–2026 | 4.4L bi-turbo mild-hybrid V8 | 631 hp / 590 lb-ft | 3.9 sec |
The 2023 X7 refresh brought updated styling, the curved display with iDrive 8, a 40-horsepower increase for the xDrive40i, and the M60i nameplate.
The original 2021 Alpina XB7 made 612 horsepower, while the 2023-and-newer version makes 631 horsepower. BMW has also announced the limited 2026 XB7 Manufaktur final edition. It is relevant to the X7’s model history, but it is a new-vehicle special edition and should not be a major factor for a used-X7 buyer today. 2026 XB7 Manufaktur details.
Mercedes-Benz GLS Trims, 2020–2026
| GLS Trim | U.S. Model Years | Engine | Horsepower / Torque | 0–60 mph |
|---|---|---|---|---|
| GLS 450 4MATIC | 2020–2023 | 3.0L turbo mild-hybrid inline-six | 362 hp / 369 lb-ft | 5.9 sec |
| GLS 580 4MATIC | 2020–2023 | 4.0L twin-turbo mild-hybrid V8 | 483 hp / 516 lb-ft | 5.2 sec |
| Mercedes-AMG GLS 63 | 2021–2026 | 4.0L twin-turbo mild-hybrid V8 | 603 hp / 627 lb-ft | 4.1 sec |
| Mercedes-Maybach GLS 600 | 2021–2026 | 4.0L twin-turbo mild-hybrid V8 | 550 hp / 538 lb-ft | 4.7–4.8 sec |
| GLS 450 4MATIC | 2024–2026 | 3.0L turbo mild-hybrid inline-six | 375 hp / 369 lb-ft | 5.8 sec |
| GLS 580 4MATIC | 2024–2026 | 4.0L twin-turbo mild-hybrid V8 | 510 hp / 538 lb-ft | 4.7 sec |
Mercedes-Benz updated the GLS for 2024, increasing the GLS 450 to 375 horsepower and the GLS 580 to 510 horsepower. The current 2026 GLS 450 and GLS 580 continue those outputs. Mercedes-Benz’s official GLS update.
The AMG GLS 63 and Maybach GLS 600 are not simply higher trims of the GLS 450. The AMG is a serious performance SUV; the Maybach is a rear-passenger-focused ultra-luxury SUV with a different price range and mission.
Which BMW X7 or Mercedes-Benz GLS Trim Is Best for You?
Best Value: BMW X7 xDrive40i
The X7 xDrive40i is the best all-around choice for most buyers. The six-cylinder is genuinely quick, and the X7 feels more direct and controlled than the GLS on a winding road. The 2023 refresh also gives it a more modern interior without forcing buyers into a V8.
Choose a 2019–2022 X7 xDrive40i if value matters most. Choose a 2023–2026 X7 xDrive40i if you want the updated design, curved display, and 375-horsepower powertrain.
Best Family Luxury SUV: Mercedes-Benz GLS 450
The GLS 450 is the strongest choice for buyers who regularly use the third row. It is more passenger-focused than the BMW, has a softer highway ride, and its cabin feels more tailored to long trips with adults in every row.
Choose a 2021–2023 GLS 450 for a lower entry price into the current GLS generation. Choose a 2024–2026 GLS 450 for the updated styling, revised tech, and stronger 375-horsepower engine.
Best V8 Value: BMW X7 M50i or M60i
The M50i and M60i are the right choice for someone who wants a three-row SUV that feels genuinely fast. The M50i offers huge performance for the money in the used market. The newer M60i has the updated X7 interior and the newer mild-hybrid V8.
They are not the logical pick for a buyer focused on predictable long-term costs. They are the pick for someone who wants the V8 experience and has budgeted appropriately for large tires, brakes, fuel, and complex repairs.
Best Comfort-Focused V8: Mercedes-Benz GLS 580
The GLS 580 is the better V8 choice for buyers who want effortless power but prefer comfort over handling. It is softer, calmer, and more traditional than the M50i or M60i.
It also costs more in the used market than comparable V8 X7s, so it has to win you over on ride quality, passenger comfort, and interior feel.
Performance Choice: Alpina XB7 vs AMG GLS 63
The Alpina XB7 is the more subtle performance SUV. It is incredibly quick, but its character is still long-distance luxury with a sophisticated chassis and strong comfort focus.
The AMG GLS 63 is louder, more aggressive, and more obviously performance-oriented. It offers 603 horsepower and a much more extroverted personality.
Buy the XB7 if you want near-supercar performance without losing a refined grand-touring feel. Buy the AMG GLS 63 if you want the most dramatic, unmistakably AMG version of the GLS.
No BMW Equivalent: Mercedes-Maybach GLS 600
The Maybach GLS 600 does not directly compete with an X7. It is for a buyer who prioritizes chauffeured comfort, rear-seat luxury, available executive seating, and exclusivity over driving dynamics.
BMW X7 vs Mercedes-Benz GLS Used Prices in the U.S.
These are Kelley Blue Book U.S. Fair Purchase Price estimates for good-condition vehicles as of August 2026. They are market benchmarks, not dealer asking prices, so exact value still depends on mileage, options, location, vehicle history, and condition.
| Model | 2022 U.S. Fair Purchase Price | 2023 U.S. Fair Purchase Price |
|---|---|---|
| BMW X7 xDrive40i | $38,100 | $49,900 |
| Mercedes-Benz GLS 450 | $44,600 | $53,300 |
| BMW X7 M50i | $42,700 | — |
| BMW X7 M60i | — | $59,100 |
| Mercedes-Benz GLS 580 | $52,400 | $62,300 |
The X7 is usually less expensive than the closest GLS in the U.S. used market. In these benchmarks, a 2022 X7 xDrive40i is about $6,500 below a 2022 GLS 450, while a 2022 X7 M50i is about $9,700 below a 2022 GLS 580. For 2023, the X7 M60i is about $3,200 below a GLS 580.
Space, Third Row, and Everyday Use
The GLS is the better choice if you expect to use the third row often. It has a more passenger-focused layout, a softer ride, and a third row that is easier to live with on longer family trips.
The X7 is still a real three-row SUV, but it feels more driver-focused. Its third row is useful for kids, occasional adult passengers, or shorter trips, while the GLS makes more sense for families who regularly carry six or seven people.
Cargo space in either SUV depends heavily on whether the third row is folded and whether the vehicle has a six-seat or seven-seat layout. If you often travel with every seat occupied, bring the bags, stroller, sports gear, or other items you actually use and test the space before buying.
Choose the GLS if you frequently carry six or seven people. Choose the X7 if the third row is useful but occasional.
What We Check on a Used BMW X7 or Mercedes-Benz GLS
Both SUVs have a lot of technology, comfort features, and expensive equipment. From our experience evaluating high-end used SUVs, service history and condition matter more than simply choosing the lowest-mileage example.
BMW X7: Check the Suspension and Cooling System
The X7’s air suspension should sit level after the vehicle has been parked and should raise and lower smoothly. During the test drive, watch for warning messages, an uneven ride, or one corner sitting lower than the others.
We also check for cooling-system service records and signs of coolant leaks. Before buying, test the major features rather than assuming they work.
When checking a used X7, make sure:
- The SUV sits level after being parked
- It raises and lowers normally in each suspension setting
- There are no suspension, cooling, or drivetrain warning messages
- Cooling-system service has been kept up
- Screens, cameras, seats, tailgate, and climate controls work properly
- Tires have even wear, especially on larger wheels
Mercedes-Benz GLS: Check the Electrical System and Air Suspension
The GLS should have no battery, charging, electrical, or 48-volt warning messages. Ask about prior electrical repairs, software updates, and service records, especially on early models.
Then test the AIRMATIC suspension. The GLS should sit level, raise and lower smoothly, and feel controlled on the road. Take time to test the MBUX screens, cameras, seats, climate controls, and power-folding features.
When checking a used GLS, make sure:
- There are no battery, charging, electrical, or 48-volt warnings
- The SUV sits level after being parked
- AIRMATIC suspension raises and lowers normally
- There are no suspension warnings or repeated compressor noises
- MBUX screens, cameras, seats, and climate controls all work
- Tires and wheels are in good condition
- Service records are complete and recalls have been checked by VIN
Final Verdict: BMW X7 or Mercedes-Benz GLS?
The BMW X7 is the better choice if you want a three-row luxury SUV that is enjoyable to drive and often gives you more value in the used market. For most buyers, the xDrive40i is the sweet spot. It is quick, comfortable, and more sensible to own than the V8 versions.
The Mercedes-Benz GLS is the better choice if passenger comfort comes first. Its softer ride and more usable third row make it the stronger option for families who regularly carry adults or older kids in every row.
Neither is automatically better in every trim. Compare like-for-like models, focus on condition and service history, and choose the version that fits how you will actually use the SUV.
Find Your Next Three-Row Luxury SUV
Browse our current pre-owned inventory to compare the exact BMW X7, Mercedes-Benz GLS, or other luxury SUV that fits your needs. Inventory changes quickly, so call to confirm current availability.
Which BMW X7 trim is comparable to the Mercedes-Benz GLS 450?
The BMW X7 xDrive40i. Both are turbocharged six-cylinder, all-wheel-drive, three-row luxury SUVs and are the best comparison for most buyers.
Is the BMW X7 M60i better than the Mercedes-Benz GLS 580?
The X7 M60i is better for buyers who prioritize handling and a more aggressive driving experience. The GLS 580 is better for buyers who prefer a softer ride and a more relaxed luxury feel.
Does the Mercedes-Benz GLS have more third-row room than the BMW X7?
Yes. The GLS is the better choice for regular third-row use, especially for taller passengers or families that often carry six or seven people.
Which is more expensive to maintain: BMW X7 or Mercedes-Benz GLS?
Neither is inexpensive to maintain. Costs depend more on the engine, wheel size, air suspension, service history, and deferred repairs than the badge alone. For most used buyers, a well-maintained X7 xDrive40i or GLS 450 will make more ownership sense than a neglected V8 model.
Which SUV is better for a family: the BMW X7 or Mercedes-Benz GLS?
The GLS is usually the better fit for families that use the third row often because it feels more focused on passenger comfort. The X7 is a strong choice for families that want three rows but also value a more engaging driving experience. For either SUV, test the exact seating and cargo layout you will use most.
