2025 BMW X5 M vs 2026 Audi RS 6

$127,200 · Crossover

$130,700 · Wagon

Comparison Overview

Choosing between monstrous performance in a high-riding crossover versus a sleek, powerful wagon often comes down to lifestyle needs versus raw driving dynamics. The 2025 BMW X5 M asks $127,200 for 617 hp and 33.9 cubic feet of cargo space, delivering that signature SUV height. Conversely, the 2026 Audi RS 6, priced slightly higher at $130,700, offers 621 hp and significantly more torque at 627 lb-ft, paired with slightly better efficiency at 16 combined MPG versus the BMW's 15. While the X5 M is nearly 3 inches taller at 69.4 inches, the RS 6, being a lower wagon, sacrifices a bit of utility, offering only 29.9 cu ft of cargo space. Both use required premium fuel, but the Audi’s lower profile promises a sharper handling experience despite the X5 M's inherently larger footprint (79.3 inches wide).

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2026 Audi RS 6

The 2026 Audi RS 6 wins for commuters due to its slightly better combined MPG of 16 compared to the X5 M's 15 MPG.

👨‍👩‍👧‍👦 Best for Families

2025 BMW X5 M

The 2025 BMW X5 M offers superior utility for families with 33.9 cubic feet of cargo capacity versus the RS 6's 29.9 cu ft.

🏎️ Best for Enthusiasts

2026 Audi RS 6

The Audi RS 6 is the choice for enthusiasts because it boasts higher torque (627 lb-ft) and a lower center of gravity.

💰 Best Value

2025 BMW X5 M

The BMW X5 M is the better value proposition as it is $3,500 less expensive while still delivering 617 horsepower.

Choose the BMW X5 M if...

You prioritize maximizing cargo hauling, as the X5 M offers 33.9 cubic feet.
You prefer the commanding view and easier ingress/egress of a traditional crossover SUV body style.
Saving $3,500 on the initial purchase price is important to your budget.

Choose the Audi RS 6 if...

You seek maximum power, specifically the superior 627 lb-ft of torque from the engine.
You value efficiency slightly more, evidenced by its 21 highway MPG versus the X5 M's 18.
You prefer sharper handling characteristics associated with a lower vehicle profile (58.6 inches tall).

Key Dimensions

Dimension	BMW X5 M	Audi RS 6
Length	194.8"	196.7"
Width	79.3"	76.8"
Height	69.4"	58.6"
Wheelbase	117.0"	115.3"

Features Comparison

Safety

Feature	BMW	Audi
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	✓	✓
Dual Rear Side-Mounted Airbags	—	✓
Headlight Washers	—	✓
Front Integrated Headrests	—	✓
Rear Fixed Headrests	—	✓

Engine

Feature	BMW	Audi
Base Engine Displacement	4.4 L	4.0 L
Number of Cylinders	V8	V8
Base Engine Type	mild hybrid	mild hybrid
Horsepower	617 hp @ 6000 rpm	621 hp
Torque	553 lb-ft @ 1800 rpm	627 lb-ft
Number of Valves	32	32
Camshaft Type	Double overhead cam (DOHC)	Double overhead cam (DOHC)
Variable Valve Timing	Variable	Variable
Fuel Injection Type	✓	✓

Drive Train

Feature	BMW	Audi
Transmission Type	8-speed shiftable automatic	8-speed shiftable automatic
Drivetrain Type	all wheel drive	all wheel drive
[object Object]	✓	—
[object Object]	✓	—
Hill Descent Control	✓	✓
[object Object]	—	✓
[object Object]	—	✓

Fuel

Feature	BMW	Audi
Fuel Type	premium unleaded (required)	premium unleaded (required)
EPA Fuel Economy (City/Highway)	13/18 MPG	14/21 MPG
EPA Fuel Economy (Combined)	15 MPG	16 MPG
EPA Driving Range (City/Highway)	284.7/394.2 mi.	270.2/405.3 mi.
Fuel Tank Capacity	21.9 gal.	19.3 gal.

Comfort & Convenience

Feature	BMW	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	✓	✓
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	✓	✓

In Car Entertainment

Feature	BMW	Audi
Infotainment Display	14.9 in	10.1 in
AM/FM Stereo	✓	✓
Premium Speaker Brand	Harman/Kardon	—
Stereo Power	464W	—
Speaker System	16	—
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	3 months
Premium Brand Speakers	—	Bang & Olufsen
Android Auto (Wireless)	—	✓
Apple CarPlay (Wireless)	—	✓

Power Feature

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

Frontseats

Feature	BMW	Audi
Front Head Room	40.8 in.	38.3 in.
Front Leg Room	39.8 in.	41.3 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	Power
Driver Seat Thigh Extension	✓	—
Driver Seat Memory Settings	2	2
Passenger Seat Power Adjustments	14-way	10-way
Passenger Seat Height Adjustment	✓	✓
Passenger Seat Lumbar Support	Power	Power
Passenger Seat Thigh Extension	✓	—
Passenger Seat Memory Settings	2	—
Driver Seat Heating	Multi-level	Multi-level
Passenger Seat Heating	Multi-level	Multi-level
Driver Seat Ventilation	—	✓
Passenger Seat Ventilation	—	✓

Rearseats

Feature	BMW	Audi
Rear Head Room	39.4 in.	39.5 in.
Rear Leg Room	37.4 in.	37.4 in.
Rear Shoulder Room	58.1 in.	56.5 in.
Split-Folding Rear Seatback	✓	✓
Folding Rear Seat Feature	✓	✓
Pass-Thru Center Armrest	✓	✓

Tires and Wheels

Feature	BMW	Audi
Wheel Finish	Painted Alloy	—
Wheel Size	21 x 11.5 in.	21 in
Tire Type	Performance	Performance
Tire Size	315/35R	275/35R21
Spare Tire Type	Temporary	—
Spare Tire Location	Inside Mounted	—
Wheel Material	—	Alloy

Suspension

Feature	BMW	Audi
Four-Wheel Independent Suspension	✓	✓
Front Stabilizer Bar	✓	✓
Rear Stabilizer Bar	✓	✓

Warranty

Feature	BMW	Audi
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.	12 yr./ unlimited mi.
Roadside Assistance	4 yr./ unlimited mi.	4 yr./ unlimited mi.
Complimentary Scheduled Maintenance	3 yr./ 36000 mi.	3 yr./ 30000 mi.

Frequently Asked Questions

Common questions about comparing the 2025 BMW X5 M and 2026 Audi RS 6.

Which vehicle is faster off the line between the 2025 X5 M and 2026 RS 6?

While both offer massive power, the 2026 Audi RS 6 holds the advantage with 621 horsepower and substantially more torque at 627 lb-ft compared to the X5 M's 553 lb-ft. This extra torque usually translates to quicker acceleration times.

Is the higher ride height of the BMW X5 M actually useful for daily driving?

Yes, the X5 M’s 69.4-inch height provides better visibility over traffic, which many commuters prefer. Its crossover design also offers 33.9 cubic feet of cargo space, significantly more than the RS 6 wagon.

Do I have to use premium fuel in both the BMW X5 M and the Audi RS 6?

Both high-performance machines strictly require premium unleaded fuel to maintain their horsepower figures of 617 hp (X5 M) and 621 hp (RS 6). This is standard for their levels of output.

How significant is the difference in fuel economy?

The difference is small but measurable: the RS 6 achieves 16 combined MPG, netting 1 MPG better than the X5 M's 15 combined MPG. Over a year of driving, this small margin could save a few dollars at the pump.

Since both are AWD, how do they compare dimensionally on tight city streets?

The Audi RS 6 is slightly narrower at 76.8 inches compared to the BMW X5 M's 79.3 inches, which could make fitting into tighter parallel parking spots marginally easier for the wagon.

What is the main trade-off when paying $3,500 more for the Audi RS 6?

For the extra $3,500, you gain an extra 4 horsepower, 74 lb-ft of torque, and slightly better fuel economy, but you lose 4 cubic feet of readily accessible cargo volume compared to the X5 M.