Compare performance (625 HP vs 605 HP), boot space and price (83,600 £ vs 106,600 £ ) at a glance. Find out which car is the better choice for you – BMW X6 or Mercedes G Class?
All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.
In the realm of automotive excellence, two giants stand out—the BMW X6 and the Mercedes G-Klasse. Each represents a fusion of engineering prowess and luxury, but they cater to distinct tastes and driving preferences. Let's dive deep into the technical specifications and unique innovations of these iconic vehicles.
The BMW X6 has carved a niche with its coupé-inspired SUV design, boasting sleek lines and an aggressive stance. It measures up to 4960mm in length and has an overall width of 2019mm, slightly broader yet lower, standing at 1695mm. On the other hand, the Mercedes G-Klasse is an epitome of off-road robustness. This off-roader's boxy design is unmistakable, standing tall at 1983mm with a length of up to 4873mm.
The X6 offers various engine configurations, including powerful petrol and diesel MHEV options. It peaks at 625 HP with a remarkable torque of up to 750 Nm, propelling the vehicle from 0 to 100 km/h in just 3.9 seconds. Meanwhile, its top speed can reach 250 km/h.
The G-Klasse stands strong with its petrol and diesel engines, complemented by a potent electric model. The most powerful petrol engine offers 605 HP, a torque of 1050 Nm, and an acceleration time of 4.4 seconds to 100 km/h. Its versatile electric variant comes with a battery capacity of 116 kWh, offering an impressive electric range up to 468 km on a single charge.
Both the BMW X6 and the Mercedes G-Klasse feature all-wheel drive systems and are equipped with automatic transmissions, ensuring smooth power delivery and superior traction. The X6 leans more towards on-road performance with lighter curb weights, starting at 2240 kg. It features dynamic handling due to its lower ground clearance.
In contrast, the G-Klasse is engineered for off-road dominance, showcased in its sturdy build with a curb weight topping at 3085 kg depending on the configuration. Its capability to tackle rugged terrains is enhanced by the inclusion of a reduction gearbox.
Fuel efficiency is a defining aspect where these vehicles diverge. The BMW X6 offers a more frugal consumption rate, ranging from 7.2 to 12.7 L/100 km based on engine choice. The G-Klasse, while more powerful, consumes between 8.7 and 14.7 L/100 km and also provides a fully electric variant for zero-emission drives, meeting CO2 efficiency standards of class A.
The BMW X6 provides a luxurious cabin with premium materials and innovative tech, seating up to 5 occupants comfortably. Its trunk offers a 580-liter capacity, adequate for family getaways.
The G-Klasse retains an emphasis on spaciousness, offering a slightly larger trunk capacity of up to 640 liters. Its interior caters to adventurers with durable yet plush materials, synonymous with Mercedes-Benz luxury.
Both the BMW X6 and Mercedes G-Klasse offer compelling arguments for dominance in their respective domains. While the X6 appeals to those who crave sporty sophistication and on-road prowess, the G-Klasse is an undeniable choice for enthusiasts seeking rugged luxury and trail-conquering capability. The choice largely depends on the driver's lifestyle, preferences, and the journey they envision.
Price and efficiency are key factors when choosing a car – and this is often where the real differences emerge.
BMW X6 is noticeably cheaper – starting at 83,600 £ , while the Mercedes G Class costs 106,600 £ . That’s a price difference of around 23,019 £.
Fuel consumption also shows a difference: the BMW X6 uses 7.2 L/100km and is clearly more efficient than the Mercedes G Class with 8.7 L/100km. The difference is about 1.5 L/100km.
Under the bonnet, it becomes clear which model is tuned for sportiness and which one takes the lead when you hit the accelerator.
When it comes to engine power, the BMW X6 offers barely more power – delivering 625 HP compared to 605 HP. That’s roughly 20 HP more horsepower.
When accelerating from 0 to 100 km/h, the BMW X6 is a bit quicker – completing the sprint in 3.9 s, while the Mercedes G Class takes 4.4 s. That’s about 0.5 s quicker.
Looking at top speed, the BMW X6 is clearly faster – reaching 250 km/h, while the Mercedes G Class tops out at 180 km/h. The difference is around 70 km/h.
There’s also a difference in torque: the Mercedes G Class delivers visibly more torque with 1,164 Nm compared to 750 Nm. That’s about 414 Nm more.
Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.
Both vehicles offer seating for 5 people.
In terms of curb weight, BMW X6 is a bit lighter – 2,240 kg compared to 2,485 kg. The difference is around 245 kg.
Looking at boot space, the Mercedes G Class offers barely more boot space – 640 L compared to 580 L. That’s a difference of about 60 L.
For maximum load capacity, the Mercedes G Class offers visibly more capacity – up to 1,990 L, about 460 L more than the BMW X6.
When it comes to payload, the Mercedes G Class carries barely more – 715 kg compared to 695 kg. That’s a difference of about 20 kg.
The Mercedes G Class is clearly ahead overall in the objective data comparison.
This result only shows which model scores more points on paper – not which of the two cars feels right for you.
The BMW X6 wears its coupe-SUV looks like a tuxedo with oversized shoulders, turning everyday traffic into a catwalk whenever it glides past. It serves up sporty handling and a plush cabin with just enough practicality to keep daily life sane — perfect for buyers who crave drama without completely abandoning common sense.
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The G-Class, often called the G‑Wagen, is a blocky icon that blends unapologetic off-road prowess with a plush, modern cabin, announcing your arrival before you even step out. It’s equally at home crawling over rocks or cruising city streets, and owning one feels like adopting a very expensive, very capable personality.
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Costs and Consumption |
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Price
83,600 - 146,400 £
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Price
106,600 - 171,000 £
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Consumption L/100km
7.2 - 12.7 L/100km
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Consumption L/100km
8.7 - 14.7 L/100km
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Consumption kWh/100km
-
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Consumption kWh/100km
28 kWh/100km
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Electric Range
-
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Electric Range
468 km
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Battery Capacity
-
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Battery Capacity
116 kWh
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co2
188 - 288 g/km
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co2
0 - 336 g/km
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Fuel tank capacity
83 L
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Fuel tank capacity
-
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Dimensions and Body |
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Body Type
SUV
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Body Type
Off-Roader
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Seats
5
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Seats
5
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Doors
5
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Doors
5
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Curb weight
2,240 - 2,445 kg
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Curb weight
2,485 - 3,085 kg
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Trunk capacity
580 L
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Trunk capacity
620 - 640 L
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Length
4,960 mm
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Length
4,624 mm
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Width
2,004 - 2,019 mm
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Width
1,931 - 1,984 mm
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Height
1,700 mm
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Height
1,983 mm
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Max trunk capacity
1,530 L
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Max trunk capacity
1,990 L
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Payload
595 - 695 kg
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Payload
415 - 715 kg
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Engine and Performance |
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Engine Type
Petrol MHEV, Diesel MHEV
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Engine Type
Electric, Petrol MHEV, Diesel MHEV
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Transmission
Automatic
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Transmission
Automatic
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Transmission Detail
Automatic Gearbox
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Transmission Detail
Reduction Gearbox, Automatic Gearbox
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Drive Type
All-Wheel Drive
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Drive Type
All-Wheel Drive
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Power HP
298 - 625 HP
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Power HP
387 - 605 HP
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Acceleration 0-100km/h
3.9 - 6.1 s
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Acceleration 0-100km/h
4.4 - 5.8 s
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Max Speed
250 km/h
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Max Speed
180 km/h
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Torque
540 - 750 Nm
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Torque
760 - 1,164 Nm
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Number of Cylinders
6 - 8
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Number of Cylinders
6 - 8
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Power kW
219 - 460 kW
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Power kW
285 - 445 kW
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Engine capacity
2,993 - 4,395 cm3
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Engine capacity
2,989 - 3,982 cm3
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General |
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Model Year
2025
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Model Year
2,024 - 2,025
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CO2 Efficiency Class
G
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CO2 Efficiency Class
A, G
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Brand
BMW
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Brand
Mercedes-Benz
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Deutschland
France
Nederland
Great Britain
Sverige
Danmark
Suomi
Italia
Polska
España