2025 BMW X6 M vs 2025 Mercedes-Benz G-Class

$132,100 · Crossover

$148,250 · SUV

Comparison Overview

Choosing between the 2025 BMW X6 M and the 2025 Mercedes-Benz G-Class boils down to performance theater versus rugged versatility, especially when considering that the X6 M starts at $16,150 less. If raw speed is your priority, the X6 M dominates with its potent 617 hp and 553 lb-ft of torque, while the G-Class offers a more modest 443 hp. However, the G-Class presents a more practical package for daily life; despite the X6 M's crossover status, the G-Class provides significantly more utility, boasting 34.8 cu ft of cargo capacity compared to the X6 M's 27.4 cu ft. Fuel economy is marginally better in the G-Class at 18 combined MPG versus the X6 M’s 15 combined MPG, which might matter slightly given both require premium fuel. Ultimately, you are paying a premium for the G-Class’s iconic height (77.7 inches) and boxy utility over the X6 M’s superior engine output.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2025 BMW X6 M

The X6 M's higher horsepower and torque generally translate to quicker acceleration and easier merging in urban traffic, despite its slightly worse city MPG of 13.

👨‍👩‍👧‍👦 Best for Families

2025 Mercedes-Benz G-Class

The G-Class offers superior practicality with 34.8 cu ft of cargo capacity, significantly beating the X6 M's 27.4 cu ft for hauling family gear.

🏎️ Best for Enthusiasts

2025 BMW X6 M

The 174 hp advantage held by the X6 M's 617 hp output makes it the definitive choice for sheer on-road performance driving.

💰 Best Value

2025 BMW X6 M

The BMW X6 M offers substantially more power (617 hp) for $16,150 less than the base G-Class MSRP.

Choose the BMW X6 M if...

You prioritize maximum acceleration and engine output, benefiting from 617 hp.
Saving approximately $16,150 upfront is important for your budget ($132,100 MSRP).
You prefer a slightly lower profile vehicle (66.7 inches height) for easier garage access.

Choose the Mercedes-Benz G-Class if...

You need maximum space, as the G-Class provides 34.8 cu ft of cargo capacity.
You prefer a marginally better fuel economy, achieving 18 combined MPG versus 15.
You need the commanding presence and visibility offered by its substantial 77.7-inch height.

Key Dimensions

Dimension	BMW X6 M	Mercedes-Benz G-Class
Length	195.0"	190.0"
Width	79.5"	76.0"
Height	66.7"	77.7"
Wheelbase	117.0"	113.8"

Features Comparison

Safety

Feature	BMW	Mercedes-Benz
Blind Spot Monitor	✓	✓
Lane Departure Warning	✓	✓
Rear Cross Traffic Alert	✓	✓
Driver Attention Alert	✓	✓
Pre-Collision Safety System	✓	✓
Post-Collision Safety System	✓	✓
Dual Front Side-Mounted Airbags	✓	✓
Front Head Airbags	✓	✓
Rear Head Airbags	✓	✓
Passenger Airbag Occupant Sensing Deactivation	✓	✓
Electronic Stability Control	✓	✓
Traction Control System	✓	✓
LATCH System	✓	✓
Rear Door Child Safety Locks	✓	✓
Anti-lock Brakes (ABS)	4-Wheel	4-Wheel
Brake Drying	✓	✓
Front Ventilated Disc Brakes	✓	✓
Rear Ventilated Disc Brakes	✓	✓
Brake Preparation System	✓	✓
Brake Assist	✓	✓
Tire Pressure Monitoring System	✓	✓
Automatic Headlights	✓	✓
Headlight Delay-Off	✓	✓
LED Headlights	✓	✓
Self-Leveling Headlights	✓	—
Daytime Running Lights	✓	✓
Integrated Turn Signal Mirrors	✓	✓
Front Headrests	2	2
Front Power Adjustable Headrests	✓	✓
Rear Headrests	3	3
Rear Height Adjustable Headrests	✓	✓
Rear Center 3-Point Seatbelt	✓	✓
Anti-Theft Alarm System (Remote)	✓	✓
Engine Immobilizer	✓	✓
Lane Keeping Assist System	—	✓
Dual Rear Side-Mounted Airbags	—	✓
Adaptive Headlights	—	✓
Cornering Lights	—	✓

Engine

Feature	BMW	Mercedes-Benz
Base Engine Displacement	4.4 L	3.0 L
Number of Cylinders	V8	inline 6
Base Engine Type	mild hybrid	mild hybrid
Horsepower	617 hp @ 6000 rpm	443 hp @ 6100 rpm
Torque	553 lb-ft @ 1800 rpm	413 lb-ft @ 1950 rpm
Number of Valves	32	24
Camshaft Type	Double overhead cam (DOHC)	Double overhead cam (DOHC)
Variable Valve Timing	Variable	Variable
Fuel Injection Type	✓	✓

Drive Train

Feature	BMW	Mercedes-Benz
Transmission Type	8-speed shiftable automatic	9-speed shiftable automatic
Drivetrain Type	all wheel drive	four wheel drive
[object Object]	✓	—
[object Object]	✓	—
Hill Descent Control	✓	✓
4WD System Type	—	Full Time
Transfer Case Gearing	—	Electronic Hi-Lo
Center Differential Type	—	Limited Slip
[object Object]	—	✓
[object Object]	—	✓
[object Object]	—	✓

Fuel

Feature	BMW	Mercedes-Benz
Fuel Type	premium unleaded (required)	premium unleaded (required)
EPA Fuel Economy (City/Highway)	13/18 MPG	17/19 MPG
EPA Fuel Economy (Combined)	15 MPG	18 MPG
EPA Driving Range (City/Highway)	284.7/394.2 mi.	448.8/501.6 mi.
Fuel Tank Capacity	21.9 gal.	26.4 gal.

Comfort & Convenience

Feature	BMW	Mercedes-Benz
Push Button Start	✓	✓
Power Tilt and Telescopic Steering Wheel	✓	✓
Transmission Controls on Steering Wheel	✓	✓
Cruise Control on Steering Wheel	✓	✓
Audio Controls on Steering Wheel	✓	✓
Electric Power Steering	✓	✓
Front View Camera	✓	✓
Side View Camera	✓	✓
Rear View Camera	✓	✓
Front Parking Sensors	✓	✓
Rear Parking Sensors	✓	✓
Automatic Parking Assist	✓	✓
Wireless Charging Pad	✓	✓
Cruise Control	✓	—
Universal Remote Transmitter	✓	✓
Front Cupholders	✓	✓
Rear Cupholders	✓	✓
Front Door Pockets	✓	✓
Rear Door Pockets	✓	✓
Front Seatback Storage	✓	✓
Leather Steering Wheel	✓	✓
Heated Steering Wheel	✓	✓
Four Zone Climate Control	✓	—
Rear Ventilation Ducts with Fan Control	✓	✓
Interior Air Filtration	✓	✓
Dual Vanity Mirrors	✓	✓
Auto-Dimming Rearview Mirror	✓	✓
Turn Signal Indicators in Mirrors	✓	✓
Adaptive Cruise Control	—	✓
Three Zone Climate Control	—	✓

In Car Entertainment

Feature	BMW	Mercedes-Benz
Infotainment Display	14.9 in	12.3 in
AM/FM Stereo	✓	✓
Premium Speaker Brand	Harman/Kardon	Burmester
Stereo Power	464W	760W
Speaker System	16	18
Subwoofer Count	2	—
Surround Audio	Discrete	Discrete
Android Auto (Wired)	✓	—
Apple CarPlay (Wired)	✓	—
USB Port	✓	✓
Auxiliary Audio Input	✓	—
USB Port with External Media Control	✓	✓
Satellite Radio	✓	✓
Satellite Radio Trial Period	12 months	6 months
Premium Brand Stereo System	—	Burmester
Android Auto (Wireless)	—	✓
Apple CarPlay (Wireless)	—	✓

Power Feature

Feature	BMW	Mercedes-Benz
One-Touch Power Windows	4	4
Moonroof Type	1st Row Power Glass Extended	1st Row Power Glass
Keyless Entry	✓	✓
Reverse Tilt Passenger Mirror	✓	—
Heated Mirrors	✓	✓

Frontseats

Feature	BMW	Mercedes-Benz
Front Head Room	39.3 in.	41.9 in.
Front Leg Room	40.4 in.	38.7 in.
Front Shoulder Room	60.0 in.	57.8 in.
Seat Material: Premium Leather	✓	—
Front Seat Type: Sport	✓	—
Driver Seat Power Adjustments	14-way	10-way
Driver Seat Height Adjustment	✓	✓
Driver Seat Lumbar Support	Power	—
Driver Seat Thigh Extension	✓	✓
Driver Seat Memory Settings	2	3
Passenger Seat Power Adjustments	14-way	10-way
Passenger Seat Height Adjustment	✓	✓
Passenger Seat Lumbar Support	Power	—
Passenger Seat Thigh Extension	✓	✓
Passenger Seat Memory Settings	2	3
Driver Seat Heating	Multi-level	Multi-level
Passenger Seat Heating	Multi-level	Multi-level
Seat Material: Leather	—	✓
Front Seat Type: Bucket	—	✓

Rearseats

Feature	BMW	Mercedes-Benz
Rear Head Room	37.5 in.	40.5 in.
Rear Leg Room	35.7 in.	39.5 in.
Rear Shoulder Room	57.7 in.	57.4 in.
Split-Folding Rear Seatback	✓	✓
Folding Rear Seat Feature	✓	✓
Pass-Thru Center Armrest	✓	✓
Heated Rear Seats (Multi-Level)	—	✓

Tires and Wheels

Feature	BMW	Mercedes-Benz
Wheel Finish	Painted Alloy	—
Wheel Size	21 x 11.5 in.	19 x 8.5 in
Tire Type	Performance	All Season
Tire Size	315/35R	275/55R19
Spare Tire Type	Temporary	Full Size Matching
Spare Tire Location	Inside Mounted	Outside Rear Mounted
Wheel Material	—	Alloy

Suspension

Feature	BMW	Mercedes-Benz
Four-Wheel Independent Suspension	✓	—
Front Stabilizer Bar	✓	—
Rear Stabilizer Bar	✓	—
Front Suspension Type	—	Independent
Stabilizer Bar	—	✓

Warranty

Feature	BMW	Mercedes-Benz
Basic Warranty	4 yr./ 50000 mi.	4 yr./ 50000 mi.
Drivetrain Warranty	4 yr./ 50000 mi.	4 yr./ 50000 mi.
Corrosion/Rust Warranty	12 yr./ unlimited mi.	4 yr./ 50000 mi.
Roadside Assistance	4 yr./ unlimited mi.	4 yr./ 50000 mi.
Complimentary Scheduled Maintenance	3 yr./ 36000 mi.	—
Hybrid Component Warranty	—	6 yr./ 62000 mi.

Frequently Asked Questions

Common questions about comparing the 2025 BMW X6 M and 2025 Mercedes-Benz G-Class.

Which vehicle is significantly faster in a straight line?

The 2025 BMW X6 M is significantly faster, boasting 617 horsepower and 553 lb-ft of torque. This results in a 174 hp advantage over the Mercedes-Benz G-Class, making the X6 M the performance leader in this comparison.

How much more practical is the G-Class for cargo hauling?

The G-Class is notably more practical, offering 34.8 cubic feet of cargo capacity. This is substantially larger than the X6 M's 27.4 cubic feet, which helps when loading larger items or luggage for trips.

Is the higher price tag of the G-Class justified over the X6 M?

Based purely on the provided specs, the G-Class costs $16,150 more and offers less horsepower. Buyers must value its unique, boxier design and greater height (77.7 inches vs. 66.7 inches) over the X6 M's superior performance metrics for the extra cost.

Do either of these vehicles offer decent fuel economy?

Neither vehicle excels in efficiency, as both require premium unleaded fuel. The G-Class edges out the X6 M slightly, achieving 18 combined MPG compared to the X6 M’s 15 combined MPG.

Which vehicle is physically larger in its dimensions?

While the X6 M is longer at 195.0 inches, the G-Class is considerably taller at 77.7 inches, giving it a much more imposing stance on the road compared to the X6 M's 66.7-inch height.

How does the transmission setup differ between the two?

The X6 M utilizes an 8-speed shiftable automatic transmission, whereas the G-Class is equipped with a 9-speed shiftable automatic transmission, though both offer driver control over gear changes.