2025 Mercedes-Benz G-Class vs 2026 Audi RS 6

$148,250 · SUV

$130,700 · Wagon

Comparison Overview

The 2025 Mercedes-Benz G-Class commands attention with its legendary boxy stance and robust 443 hp, rooted in true off-road DNA, contrasting sharply with the 2026 Audi RS 6, a stealthy performance wagon packing a massive 621 hp punch. While the G-Class stands tall at 77.7 inches, offering 34.8 cubic feet of cargo space, the RS 6 hunkers down, providing superior power and a lower profile for tarmac domination. The G-Class commands an MSRP of $148,250, putting it significantly above the RS 6's $130,700 price tag—a difference of $17,550. Furthermore, the Audi boasts a staggering 178 hp advantage and 627 lb-ft of torque, though its efficiency suffers slightly with a Combined MPG of 16 versus the G-Class's 18 MPG.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2025 Mercedes-Benz G-Class

The G-Class, despite its size, offers a slightly better city fuel economy rating of 17 MPG compared to the RS 6's 14 MPG.

👨‍👩‍👧‍👦 Best for Families

2025 Mercedes-Benz G-Class

The G-Class offers 34.8 cubic feet of cargo capacity, significantly more space than the RS 6's 29.9 cubic feet.

🏎️ Best for Enthusiasts

2026 Audi RS 6

The 2026 Audi RS 6 is the clear choice for performance seekers, delivering a colossal 621 hp and 627 lb-ft of torque.

💰 Best Value

2026 Audi RS 6

The Audi RS 6 provides significantly more horsepower—178 hp more—for $17,550 less than the G-Class.

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

You prioritize maximum cargo volume, as the G-Class provides 34.8 cu ft versus 29.9 cu ft in the RS 6.
You prefer the commanding driving position and iconic, upright exterior design of a true off-road SUV.
You require a superior highway fuel range, achieving 19 MPG versus the RS 6's 21 MPG highway rating (but a better overall combined rating of 18 MPG).

Choose the Audi RS 6 if...

Unadulterated straight-line speed is your primary concern, given the RS 6's massive 621 hp output.
You seek significantly more torque (627 lb-ft vs. 413 lb-ft) for rapid acceleration and passing power.
You want to save $17,550 on the initial purchase price while gaining a much higher power figure.

Key Dimensions

Dimension	Mercedes-Benz G-Class	Audi RS 6
Length	190.0"	196.7"
Width	76.0"	76.8"
Height	77.7"	58.6"
Wheelbase	113.8"	115.3"

Features Comparison

Safety

Feature	Mercedes-Benz	Audi
Blind Spot Monitor	✓	—
Lane Departure Warning	✓	✓
Lane Keeping Assist System	✓	—
Rear Cross Traffic Alert	✓	—
Driver Attention Alert	✓	—
Pre-Collision Safety System	✓	✓
Post-Collision Safety System	✓	✓
Dual Front Side-Mounted Airbags	✓	✓
Dual Rear 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	✓	✓
Adaptive Headlights	✓	—
Daytime Running Lights	✓	✓
Cornering 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	✓	✓
Headlight Washers	—	✓
Front Integrated Headrests	—	✓
Rear Fixed Headrests	—	✓

Engine

Feature	Mercedes-Benz	Audi
Base Engine Displacement	3.0 L	4.0 L
Number of Cylinders	inline 6	V8
Base Engine Type	mild hybrid	mild hybrid
Horsepower	443 hp @ 6100 rpm	621 hp
Torque	413 lb-ft @ 1950 rpm	627 lb-ft
Number of Valves	24	32
Camshaft Type	Double overhead cam (DOHC)	Double overhead cam (DOHC)
Variable Valve Timing	Variable	Variable
Fuel Injection Type	✓	✓

Drive Train

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

Fuel

Feature	Mercedes-Benz	Audi
Fuel Type	premium unleaded (required)	premium unleaded (required)
EPA Fuel Economy (City/Highway)	17/19 MPG	14/21 MPG
EPA Fuel Economy (Combined)	18 MPG	16 MPG
EPA Driving Range (City/Highway)	448.8/501.6 mi.	270.2/405.3 mi.
Fuel Tank Capacity	26.4 gal.	19.3 gal.

Comfort & Convenience

Feature	Mercedes-Benz	Audi
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	✓	✓
Adaptive Cruise Control	✓	—
Universal Remote Transmitter	✓	✓
Front Cupholders	✓	✓
Rear Cupholders	✓	✓
Front Door Pockets	✓	✓
Rear Door Pockets	✓	✓
Front Seatback Storage	✓	✓
Leather Steering Wheel	✓	✓
Heated Steering Wheel	✓	✓
Three Zone Climate Control	✓	—
Rear Ventilation Ducts with Fan Control	✓	✓
Interior Air Filtration	✓	✓
Dual Vanity Mirrors	✓	✓
Auto-Dimming Rearview Mirror	✓	✓
Turn Signal Indicators in Mirrors	✓	✓
Cruise Control	—	✓
Four Zone Climate Control	—	✓

In Car Entertainment

Feature	Mercedes-Benz	Audi
Infotainment Display	12.3 in	10.1 in
AM/FM Stereo	✓	✓
Premium Brand Stereo System	Burmester	—
Premium Speaker Brand	Burmester	—
Stereo Power	760W	—
Speaker System	18	—
Surround Audio	Discrete	Discrete
Android Auto (Wireless)	✓	✓
Apple CarPlay (Wireless)	✓	✓
USB Port	✓	✓
USB Port with External Media Control	✓	✓
Satellite Radio	✓	✓
Satellite Radio Trial Period	6 months	3 months
Premium Brand Speakers	—	Bang & Olufsen

Power Feature

Feature	Mercedes-Benz	Audi
One-Touch Power Windows	4	4
Moonroof Type	1st Row Power Glass	1st Row Power Glass Extended
Keyless Entry	✓	✓
Heated Mirrors	✓	✓

Frontseats

Feature	Mercedes-Benz	Audi
Front Head Room	41.9 in.	38.3 in.
Front Leg Room	38.7 in.	41.3 in.
Front Shoulder Room	57.8 in.	57.8 in.
Seat Material: Leather	✓	—
Front Seat Type: Bucket	✓	—
Driver Seat Power Adjustments	10-way	10-way
Driver Seat Height Adjustment	✓	✓
Driver Seat Thigh Extension	✓	—
Driver Seat Memory Settings	3	2
Passenger Seat Power Adjustments	10-way	10-way
Passenger Seat Height Adjustment	✓	✓
Passenger Seat Thigh Extension	✓	—
Passenger Seat Memory Settings	3	—
Driver Seat Heating	Multi-level	Multi-level
Passenger Seat Heating	Multi-level	Multi-level
Seat Material: Premium Leather	—	✓
Front Seat Type: Sport	—	✓
Driver Seat Lumbar Support	—	Power
Passenger Seat Lumbar Support	—	Power
Driver Seat Ventilation	—	✓
Passenger Seat Ventilation	—	✓

Rearseats

Feature	Mercedes-Benz	Audi
Rear Head Room	40.5 in.	39.5 in.
Rear Leg Room	39.5 in.	37.4 in.
Rear Shoulder Room	57.4 in.	56.5 in.
Split-Folding Rear Seatback	✓	✓
Folding Rear Seat Feature	✓	✓
Pass-Thru Center Armrest	✓	✓
Heated Rear Seats (Multi-Level)	✓	—

Tires and Wheels

Feature	Mercedes-Benz	Audi
Wheel Material	Alloy	Alloy
Wheel Size	19 x 8.5 in	21 in
Tire Type	All Season	Performance
Tire Size	275/55R19	275/35R21
Spare Tire Type	Full Size Matching	—
Spare Tire Location	Outside Rear Mounted	—

Suspension

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

Warranty

Feature	Mercedes-Benz	Audi
Basic Warranty	4 yr./ 50000 mi.	4 yr./ 50000 mi.
Drivetrain Warranty	4 yr./ 50000 mi.	4 yr./ 50000 mi.
Hybrid Component Warranty	6 yr./ 62000 mi.	—
Corrosion/Rust Warranty	4 yr./ 50000 mi.	12 yr./ unlimited mi.
Roadside Assistance	4 yr./ 50000 mi.	4 yr./ unlimited mi.
Complimentary Scheduled Maintenance	—	3 yr./ 30000 mi.

Frequently Asked Questions

Common questions about comparing the 2025 Mercedes-Benz G-Class and 2026 Audi RS 6.

How does the sheer size difference affect driving dynamics between the two vehicles?

The 2025 G-Class is much taller at 77.7 inches and maintains a wider stance, lending itself to off-road prowess and visibility, whereas the 2026 RS 6 is significantly lower at 58.6 inches, promising better aerodynamic stability at the speeds its 621 hp can achieve.

Is the significant horsepower difference worth the higher price of the G-Class?

The RS 6 delivers 178 more horsepower than the G-Class for $17,550 less, making the Audi an undeniable performance bargain based purely on power-to-price ratio.

Which vehicle is marginally more efficient for daily driving?

The G-Class holds a slight overall edge, boasting an 18 MPG combined rating compared to the RS 6's 16 MPG combined rating, despite both requiring premium fuel.

Comparing cargo space for road trips, which vehicle wins?

The boxier Mercedes-Benz G-Class wins for outright utility, offering 34.8 cubic feet of cargo capacity, significantly eclipsing the RS 6 wagon's 29.9 cubic feet.

What are the fundamental drivetrain differences between these two luxury machines?

The G-Class utilizes a true four-wheel drive system paired with a 9-speed automatic, whereas the RS 6 uses an all-wheel drive system paired with an 8-speed automatic transmission.