2025 Audi S8 vs 2025 BMW M4 CS

$125,300 · Sedan

$123,500 · Coupe

Comparison Overview

Choosing between the luxurious, full-size 2025 Audi S8 and the razor-sharp 2025 BMW M4 CS often boils down to deciding if you need executive refinement or track-ready aggression. While the S8 costs $1,800 more at an MSRP of $125,300 compared to the M4 CS's $123,500, they match perfectly on efficiency, both achieving a combined 18 MPG. The Audi dominates in sheer presence and torque, boasting 590 lb-ft to the BMW's 479 lb-ft, which is crucial for effortless highway passing. Conversely, the M4 CS is significantly more compact, measuring 189.0 inches long versus the S8's 209.5 inches, making parking easier. Both utilize required premium fuel and feature AWD, but the S8 offers slightly more usability with 12.5 cu ft of cargo space versus the M4 CS's 12.0 cu ft, though neither is spacious for large families.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2025 Audi S8

The Audi S8's longer, larger sedan body provides superior ride comfort and rear-seat space for daily driving.

👨‍👩‍👧‍👦 Best for Families

2025 Audi S8

Despite both being impractical for large families, the S8's sedan layout and slightly larger 12.5 cu ft cargo area edge out the M4 CS coupe.

🏎️ Best for Enthusiasts

2025 BMW M4 CS

The lower, lighter profile of the M4 CS coupe generally suggests superior handling dynamics compared to the larger S8 sedan.

💰 Best Value

2025 BMW M4 CS

The BMW M4 CS offers nearly identical performance specs for $1,800 less MSRP, providing better bang for your buck.

Choose the Audi S8 if...

You prioritize maximum low-end pull, evidenced by the S8's dominant 590 lb-ft of torque.
You need the extra 2.5 inches of length (209.5 inches total) for a more commanding road presence.
You prefer a traditional four-door sedan architecture over a two-door coupe.

Choose the BMW M4 CS if...

You prefer a more compact footprint, as the M4 CS is 209.5 inches long compared to the S8's 209.5 inches.
You want to save $1,800 on the initial purchase price while still getting 543 hp.
You value a sleeker, lower stance with a height of 55.1 inches for a sportier look.

Key Dimensions

Dimension	Audi S8	BMW M4 CS
Length	209.5"	189.0"
Width	76.6"	75.5"
Height	58.5"	55.1"
Wheelbase	123.2"	112.5"

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	✓	✓
Blind Spot Monitor	—	✓
Front Fixed Headrests	—	✓
Rear Fixed Headrests	—	✓

Engine

Feature	Audi	BMW
Base Engine Displacement	4.0 L	3.0 L
Number of Cylinders	V8	inline 6
Base Engine Type	mild hybrid	gas
Horsepower	563 hp	543 hp @ 6250 rpm
Torque	590 lb-ft	479 lb-ft @ 2750 rpm
Number of Valves	32	24
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	16/23 MPG
EPA Fuel Economy (Combined)	18 MPG	18 MPG
EPA Driving Range (City/Highway)	325.5/520.8 mi.	249.6/358.8 mi.
Fuel Tank Capacity	21.7 gal.	15.6 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	✓	—
Tilt and Telescopic Steering Wheel	—	✓
Cruise Control on Steering Wheel	—	✓
Steering Wheel Material	—	Simulated Suede/Carbon Fiber
Dual Zone Climate Control	—	✓
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	—
Speaker System	17	—
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)	—	✓

Power Feature

Feature	Audi	BMW
One-Touch Power Windows	4	2
Moonroof Type	1st Row Power Glass	—
Keyless Entry	✓	✓
Reverse Tilt Passenger Mirror	✓	—
Heated Mirrors	✓	✓

Frontseats

Feature	Audi	BMW
Front Head Room	38.3 in.	—
Front Leg Room	41.5 in.	—
Front Shoulder Room	59.1 in.	—
Seat Material: Premium Leather	✓	✓
Front Seat Type: Sport	✓	✓
Driver Seat Power Adjustments	18-way	—
Driver Seat Height Adjustment	✓	✓
Driver Seat Lumbar Support	Power	—
Driver Seat Memory Settings	2	2
Passenger Seat Power Adjustments	18-way	—
Passenger Seat Height Adjustment	✓	✓
Passenger Seat Lumbar Support	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.	—
Rear Leg Room	44.3 in.	—
Rear Shoulder Room	57.6 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	285/30R
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 M4 CS.

Which car is significantly faster in acceleration based on these specs?

While specific 0-60 mph times are not provided, the Audi S8 has a notable advantage in torque (590 lb-ft vs. 479 lb-ft), which generally translates to quicker initial pull-away from a stop.

Are there major differences in fuel economy between these two premium vehicles?

No, both the 2025 Audi S8 and the 2025 BMW M4 CS achieve an identical 18 MPG combined, meaning your required premium fuel usage is the same for both options.

Is the BMW M4 CS much smaller than the Audi S8?

Yes, the M4 CS is significantly more compact, being 209.5 inches shorter in length (189.0 inches vs. 209.5 inches) and noticeably shorter in height (55.1 inches vs. 58.5 inches).

How close are the horsepower figures for these performance models?

The horsepower is very close, with the Audi S8 offering 563 hp and the BMW M4 CS right behind at 543 hp.

If I frequently carry luggage, which sedan or coupe offers more space?

The Audi S8, despite being a large sedan, only offers a negligible advantage with 12.5 cu ft of cargo capacity compared to the M4 CS coupe’s 12.0 cu ft.