2025 Audi S8 vs 2025 BMW M8 Gran Coupe

$125,300 · Sedan

$140,000 · Sedan

Comparison Overview

The most significant initial disparity between the 2025 Audi S8 and the 2025 BMW M8 Gran Coupe is the MSRP, where the S8 undercuts the M8 GC by $14,700, starting at $125,300 versus $140,000. Performance favors the M8 GC, boasting 617 horsepower compared to the S8's 563 hp, although the S8 counters with superior torque delivery at 590 lb-ft against the M8 GC's 553 lb-ft. Fuel economy is virtually identical, both achieving a combined 18 MPG for the S8 and 17 MPG for the M8 GC on premium unleaded fuel. Dimensions show the S8 is substantially longer at 209.5 inches versus the M8 GC's 200.9 inches, yet the M8 GC offers greater utility with 15.5 cubic feet of cargo capacity compared to the S8's 12.5 cubic feet. Both utilize an 8-speed shiftable automatic transmission and standard AWD.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2025 Audi S8

The Audi S8 provides a slightly better combined fuel economy rating of 18 MPG versus the M8 Gran Coupe's 17 MPG.

👨‍👩‍👧‍👦 Best for Families

2025 BMW M8 Gran Coupe

The BMW M8 Gran Coupe offers 15.5 cu ft of cargo capacity, which is 3.0 cu ft more usable space than the Audi S8's 12.5 cu ft.

🏎️ Best for Enthusiasts

2025 BMW M8 Gran Coupe

The BMW M8 Gran Coupe holds a definitive advantage in peak output, delivering 617 horsepower compared to the Audi S8's 563 horsepower.

💰 Best Value

2025 Audi S8

The Audi S8 commands a $14,700 lower MSRP while still delivering 563 hp and 590 lb-ft of torque.

Choose the Audi S8 if...

Maximum torque (590 lb-ft) is prioritized over peak horsepower.
Saving $14,700 on the initial purchase price is a primary concern.
A slightly longer wheelbase is preferred, indicated by the 209.5-inch overall length.

Choose the BMW M8 Gran Coupe if...

Achieving the highest possible horsepower rating (617 hp) is the main goal.
More functional cargo space is required, as it offers 15.5 cu ft versus Car 1's 12.5 cu ft.
A slightly lower, sportier stance is desired, as the M8 GC sits 2.6 inches lower.

Key Dimensions

Dimension	Audi S8	BMW M8 Gran Coupe
Length	209.5"	200.9"
Width	76.6"	76.5"
Height	58.5"	55.9"
Wheelbase	123.2"	119.2"

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	2
Rear Height Adjustable Headrests	✓	—
Rear Center 3-Point Seatbelt	✓	✓
Anti-Theft Alarm System (Remote)	✓	✓
Engine Immobilizer	✓	✓
Driver Attention Alert	—	✓
Brake Drying	—	✓
Adaptive Headlights	—	✓
Front Fixed Headrests	—	✓
Rear Integrated Headrests	—	✓

Engine

Feature	Audi	BMW
Base Engine Displacement	4.0 L	4.4 L
Number of Cylinders	V8	V8
Base Engine Type	mild hybrid	gas
Horsepower	563 hp	617 hp @ 6000 rpm
Torque	590 lb-ft	553 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	15/22 MPG
EPA Fuel Economy (Combined)	18 MPG	17 MPG
EPA Driving Range (City/Highway)	325.5/520.8 mi.	301.5/442.2 mi.
Fuel Tank Capacity	21.7 gal.	20.1 gal.

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	—	✓
Extended Cabin Heating/Cooling	—	✓

In Car Entertainment

Feature	Audi	BMW
Infotainment Display	10.1 in	12.3 in
AM/FM Stereo	✓	✓
Premium Brand Speakers	Bang & Olufsen	—
Stereo Power	730W	464W
Speaker System	17	16
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	—	Harman/Kardon
Android Auto (Wired)	—	✓
Apple CarPlay (Wired)	—	✓
Auxiliary Audio Input	—	✓

Power Feature

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

Frontseats

Feature	Audi	BMW
Front Head Room	38.3 in.	40.6 in.
Front Leg Room	41.5 in.	42.1 in.
Front Shoulder Room	59.1 in.	57.2 in.
Seat Material: Premium Leather	✓	✓
Front Seat Type: Sport	✓	✓
Driver Seat Power Adjustments	18-way	12-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	✓	—
Driver Seat Thigh Extension	—	✓
Passenger Seat Thigh Extension	—	✓

Rearseats

Feature	Audi	BMW
Rear Head Room	38.5 in.	37.1 in.
Rear Leg Room	44.3 in.	36.6 in.
Rear Shoulder Room	57.6 in.	54.6 in.
Split-Folding Rear Seatback	✓	✓
Folding Rear Seat Feature	✓	✓
Pass-Thru Center Armrest	✓	✓

Tires and Wheels

Feature	Audi	BMW
Wheel Material	Alloy	—
Wheel Size	21 in	20 x 10.5 in.
Tire Type	Performance	Performance
Tire Size	265/35R21	285/35R Y
Spare Tire Type	Temporary	—
Spare Tire Location	Inside Mounted	—
Wheel Finish	—	Painted Alloy

Suspension

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

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.
Complimentary Scheduled Maintenance	—	3 yr./ 36000 mi.

Frequently Asked Questions

Common questions about comparing the 2025 Audi S8 and 2025 BMW M8 Gran Coupe.

How do the drivetrains compare between the 2025 S8 and M8 Gran Coupe?

Both vehicles feature all-wheel drive and utilize an 8-speed shiftable automatic transmission for power delivery. The primary difference lies in power output, with the M8 GC generating 617 hp while the S8 produces 563 hp.

Is there a significant difference in fuel consumption for daily driving?

The difference is minimal; the Audi S8 achieves 18 combined MPG (15 city/24 highway), whereas the BMW M8 Gran Coupe is rated slightly lower at 17 combined MPG (15 city/22 highway), and both mandate premium unleaded fuel.

Which sedan offers better space efficiency for passengers and cargo?

The BMW M8 Gran Coupe wins on pure cargo metrics, offering 15.5 cu ft compared to the S8's 12.5 cu ft. Dimensionally, the S8 is substantially longer overall at 209.5 inches compared to the M8 GC's 200.9 inches.

What is the direct price comparison for these two models?

The 2025 Audi S8 is priced at $125,300 MSRP, significantly undercutting the 2025 BMW M8 Gran Coupe, which starts at $140,000.

Does the higher horsepower of the M8 Gran Coupe correlate to higher torque?

No, despite having 54 more horsepower, the M8 Gran Coupe generates less peak torque, delivering 553 lb-ft compared to the Audi S8's superior 590 lb-ft.

Are the exterior widths substantially different for garage parking?

No, the width measurements are nearly identical; the Audi S8 is 76.6 inches wide, and the BMW M8 Gran Coupe is 76.5 inches wide, offering no meaningful difference in clearance concerns.