2025 Audi S8 vs 2025 BMW M5

$125,300 · Sedan

$119,500 · Sedan

Comparison Overview

Deciding between the 2025 Audi S8 and the 2025 BMW M5 boils down to whether you prioritize effortless luxury cruising or blistering, electrified performance. Both are serious luxury sedans, but they lean into different strengths. The S8 offers better fuel economy, achieving 18 MPG combined versus the M5's 14 MPG combined, a noticeable difference when factoring in the premium fuel requirement. Furthermore, the S8 provides a slightly larger body length at 209.5 inches, perhaps suggesting more interior space, though the M5 technically has more cargo room at 16.5 cu ft compared to the S8's 12.5 cu ft. Performance enthusiasts will certainly notice the massive 154 hp disparity, as the M5 churns out 717 hp compared to the S8's 563 hp. Finally, there is a clear MSRP gap: the M5 starts $5,800 cheaper at $119,500.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2025 Audi S8

The Audi S8 is the better daily commuter due to its superior combined fuel economy of 18 MPG versus the M5's 14 MPG.

👨‍👩‍👧‍👦 Best for Families

2025 BMW M5

The BMW M5 wins for families due to its larger cargo capacity, offering 16.5 cubic feet compared to the S8's 12.5 cubic feet.

🏎️ Best for Enthusiasts

2025 BMW M5

The M5 is the enthusiast's choice, delivering significantly more power with 717 horsepower and 738 lb-ft of torque.

💰 Best Value

2025 BMW M5

The M5 offers substantially more performance for a lower entry price point, saving $5,800 off the Audi S8's MSRP.

Choose the Audi S8 if...

You frequently drive long distances and want to minimize fuel stops, thanks to the S8's 24 MPG highway rating.
You prefer a slightly longer, more substantial physical presence on the road (209.5 inches long).
You need predictable, consistent performance paired with better efficiency from a purely gasoline-powered setup.

Choose the BMW M5 if...

Maximum straight-line speed and acceleration are your top priorities, given the 717 hp output.
You require more usable storage space, as the M5 boasts 16.5 cu ft of cargo room.
You want to take advantage of the 27 miles of electric range offered in the M5 for short daily trips.

Key Dimensions

Dimension	Audi S8	BMW M5
Length	209.5"	200.6"
Width	76.6"	77.6"
Height	58.5"	59.4"
Wheelbase	123.2"	118.3"

Features Comparison

Safety

Feature	Audi	BMW
Lane Departure Warning	✓	✓
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
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	✓	✓
Cornering Lights	✓	✓
Headlight Washers	✓	—
Front Fog Lights	✓	—
Integrated Turn Signal Mirrors	✓	✓
Front Headrests	2	2
Front Height Adjustable Headrests	✓	—
Rear Headrests	3	3
Rear Height Adjustable Headrests	✓	✓
Rear Center 3-Point Seatbelt	✓	✓
Anti-Theft Alarm System (Remote)	✓	✓
Engine Immobilizer	✓	—
Blind Spot Monitor	—	✓
Lane Keeping Assist System	—	✓
Rear Cross Traffic Alert	—	✓
Driver Attention Alert	—	✓
Brake Drying	—	✓
Adaptive Headlights	—	✓
Front Fixed Headrests	—	✓

Engine

Feature	Audi	BMW
Base Engine Displacement	4.0 L	4.4 L
Number of Cylinders	V8	V8
Base Engine Type	mild hybrid	plug-in hybrid
Horsepower	563 hp	717 hp @ 5600 rpm
Torque	590 lb-ft	738 lb-ft @ 1800 rpm
Number of Valves	32	32
Camshaft Type	Double overhead cam (DOHC)	Double overhead cam (DOHC)
Variable Valve Timing	Variable	Variable
Fuel Injection Type	✓	✓
Cylinder Deactivation	✓	—

Drive Train

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

Fuel

Feature	Audi	BMW
Fuel Type	premium unleaded (required)	premium unleaded (required)
EPA Fuel Economy (City/Highway)	15/24 MPG	12/17 MPG
EPA Fuel Economy (Combined)	18 MPG	14 MPG
EPA Driving Range (City/Highway)	325.5/520.8 mi.	190.8/270.3 mi.
Fuel Tank Capacity	21.7 gal.	15.9 gal.
EPA Efficiency (City/Highway MPGe)	—	45/57 MPGe
EPA Efficiency (Combined MPGe)	—	50 MPGe
EPA Electric Driving Range	—	27 mi.
EPA Energy Consumption (kWh/100 mi)	—	59
Charging Time (240V)	—	4.0 hr.
DC Fast Charging Port Type	—	SAE J1772

Comfort & Convenience

Feature	Audi	BMW
Push Button Start	✓	✓
Power Tilt and Telescopic Steering Wheel	✓	✓
Transmission Controls 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	✓	✓
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	✓	✓
Extended Cabin Heating	✓	—
Dual Vanity Mirrors	✓	✓
Auto-Dimming Rearview Mirror	✓	✓
Turn Signal Indicators in Mirrors	✓	✓
Cooled Storage Compartment	✓	—
Cruise Control on Steering Wheel	—	✓
Rear Ventilation Ducts	—	✓

In Car Entertainment

Feature	Audi	BMW
Infotainment Display	10.1 in	14.9 in
AM/FM Stereo	✓	✓
Premium Brand Speakers	Bang & Olufsen	—
Stereo Power	730W	655W
Speaker System	17	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	3 months	12 months
Speed Sensitive Volume Control	✓	—
Premium Speaker Brand	—	Bowers & Wilkins
Android Auto (Wired)	—	✓
Apple CarPlay (Wired)	—	✓

Power Feature

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

Frontseats

Feature	Audi	BMW
Front Head Room	38.3 in.	39.0 in.
Front Leg Room	41.5 in.	41.3 in.
Front Shoulder Room	59.1 in.	59.2 in.
Seat Material: Premium Leather	✓	✓
Front Seat Type: Sport	✓	✓
Driver Seat Power Adjustments	18-way	—
Driver Seat Height Adjustment	✓	✓
Driver Seat Lumbar Support	Power	Power
Driver Seat Memory Settings	2	2
Passenger Seat Power Adjustments	18-way	—
Passenger Seat Height Adjustment	✓	✓
Passenger Seat Lumbar Support	Power	Power
Driver Seat Heating	Multi-level	Multi-level
Passenger Seat Heating	Multi-level	Multi-level
Driver Seat Ventilation	✓	—
Passenger Seat Ventilation	✓	—
Seat Massage Function	✓	—

Rearseats

Feature	Audi	BMW
Rear Head Room	38.5 in.	37.5 in.
Rear Leg Room	44.3 in.	36.2 in.
Rear Shoulder Room	57.6 in.	56.9 in.
Split-Folding Rear Seatback	✓	✓
Folding Rear Seat Feature	✓	—
Pass-Thru Center Armrest	✓	—
Folding Center Armrest	—	✓

Tires and Wheels

Feature	Audi	BMW
Wheel Material	Alloy	—
Wheel Size	21 in	21 x 11.0 in.
Tire Type	Performance	Performance
Tire Size	265/35R21	295/35R21
Spare Tire Type	Temporary	—
Spare Tire Location	Inside Mounted	—
Wheel Finish	—	Painted Alloy

Suspension

Feature	Audi	BMW
Four-Wheel Independent Suspension	✓	✓

Warranty

Feature	Audi	BMW
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.
EV Battery Warranty	—	8 yr./ 100000 mi.
Complimentary Scheduled Maintenance	—	3 yr./ 36000 mi.

Frequently Asked Questions

Common questions about comparing the 2025 Audi S8 and 2025 BMW M5.

How much more powerful is the BMW M5 compared to the Audi S8?

The 2025 BMW M5 is significantly more powerful, boasting 717 horsepower and 738 lb-ft of torque. This is a gap of 154 horsepower over the Audi S8's 563 hp.

Is the Audi S8 more fuel-efficient for daily driving?

Yes, the Audi S8 is considerably better for gas mileage, achieving 18 MPG combined (15 city/24 highway). The M5 lags behind with only 14 MPG combined (12 city/17 highway).

Which sedan offers better cargo capacity for groceries or luggage?

The BMW M5 provides more practical storage space with 16.5 cubic feet of cargo capacity. The Audi S8 offers less, measuring 12.5 cubic feet.

What is the price difference between these two high-performance sedans?

The BMW M5 has a lower starting MSRP at $119,500, making it $5,800 more affordable than the 2025 Audi S8, which starts at $125,300.

Do both cars require premium fuel, and does the M5 offer any electrification?

Both vehicles mandate premium unleaded fuel. A key difference is that the M5 includes an electric range of 27 miles, which the gasoline-only S8 lacks.