2025 BMW M8 vs 2025 Mercedes-Benz S-Class

$138,800 · Coupe

$117,750 · Sedan

Comparison Overview

The most significant numerical divergence between the 2025 BMW M8 and the 2025 Mercedes-Benz S-Class is the $21,050 difference in Manufacturer's Suggested Retail Price (MSRP), with the S-Class starting at $117,750 against the M8’s $138,800. Performance metrics strongly favor the M8, which outputs 617 hp and 553 lb-ft of torque compared to the S-Class’s 442 hp and 413 lb-ft of torque. This performance trade-off results in a substantial 7 MPG penalty for the M8 (17 combined MPG vs. 24 combined MPG for the S-Class). Dimensionally, the S-Class is longer at 208.2 inches, while the M8 is slightly narrower (74.9 inches vs. 76.9 inches). Despite being the coupe, the M8 offers marginally more cargo space at 14.8 cu ft versus the S-Class sedan’s 12.8 cu ft.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2025 Mercedes-Benz S-Class

The 2025 Mercedes-Benz S-Class achieves 24 combined MPG, significantly better for daily driving economy than the M8's 17 MPG.

👨‍👩‍👧‍👦 Best for Families

2025 Mercedes-Benz S-Class

As a sedan with greater overall length (208.2 inches) and height (59.2 inches), the S-Class provides superior passenger space compared to the M8 coupe.

🏎️ Best for Enthusiasts

2025 BMW M8

The 2025 BMW M8 offers a decisive performance advantage, producing 617 hp and 553 lb-ft of torque.

💰 Best Value

2025 Mercedes-Benz S-Class

The Mercedes-Benz S-Class offers significantly lower entry pricing ($117,750) while delivering respectable power and far superior fuel economy.

Choose the BMW M8 if...

Maximum acceleration and track capability are the primary purchasing factors (617 hp).
The buyer prefers the dedicated sporty characteristics of a coupe body style.
The absolute maximum cargo volume is needed, as the M8 coupe provides 14.8 cu ft versus the S-Class's 12.8 cu ft.

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

Fuel efficiency is a priority, evidenced by the 7 MPG combined advantage (24 MPG vs. 17 MPG).
The buyer requires a more accessible entry price point, saving $21,050 off the MSRP.
Superior everyday usability and passenger comfort are needed due to the greater physical dimensions of the sedan.

Key Dimensions

Dimension	BMW M8	Mercedes-Benz S-Class
Length	191.8"	208.2"
Width	74.9"	76.9"
Height	53.6"	59.2"
Wheelbase	111.3"	126.6"

Features Comparison

Safety

Feature	BMW	Mercedes-Benz
Lane Departure Warning	✓	✓
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	✓	✓
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	✓	✓
LED Headlights	✓	✓
Adaptive Headlights	✓	✓
Self-Leveling Headlights	✓	✓
Daytime Running Lights	✓	✓
Integrated Turn Signal Mirrors	✓	✓
Front Headrests	2	2
Front Fixed Headrests	✓	—
Rear Headrests	2	3
Rear Integrated Headrests	✓	—
Anti-Theft Alarm System (Remote)	✓	✓
Engine Immobilizer	✓	✓
Blind Spot Monitor	—	✓
Lane Keeping Assist System	—	✓
Front Cross Traffic Alert	—	✓
Rear Cross Traffic Alert	—	✓
Dual Rear Side-Mounted Airbags	—	✓
Rear Door Child Safety Locks	—	✓
Headlight Delay-Off	—	✓
Cornering Lights	—	✓
Front Power Adjustable Headrests	—	✓
Rear Multi-Adjustable Headrests	—	✓
Rear Center 3-Point Seatbelt	—	✓

Engine

Feature	BMW	Mercedes-Benz
Base Engine Displacement	4.4 L	3.0 L
Number of Cylinders	V8	inline 6
Base Engine Type	gas	mild hybrid
Horsepower	617 hp @ 6000 rpm	442 hp
Torque	553 lb-ft @ 1800 rpm	413 lb-ft
Number of Valves	32	24
Camshaft Type	Double overhead cam (DOHC)	Double overhead cam (DOHC)
Variable Valve Timing	Variable	Variable
Fuel Injection Type	✓	✓

Drive Train

Feature	BMW	Mercedes-Benz
Transmission Type	8-speed shiftable automatic	9-speed shiftable automatic
Drivetrain Type	all wheel drive	all wheel drive
[object Object]	✓	—
[object Object]	✓	—
Center Differential Type	—	Limited Slip

Fuel

Feature	BMW	Mercedes-Benz
Fuel Type	premium unleaded (required)	premium unleaded (required)
EPA Fuel Economy (City/Highway)	15/22 MPG	21/31 MPG
EPA Fuel Economy (Combined)	17 MPG	24 MPG
EPA Driving Range (City/Highway)	301.5/442.2 mi.	420.0/620.0 mi.
Fuel Tank Capacity	20.1 gal.	20.0 gal.

Comfort & Convenience

Feature	BMW	Mercedes-Benz
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	✓	✓
Rear View Camera	✓	✓
Wireless Charging Pad	✓	✓
Cruise Control	✓	—
Universal Remote Transmitter	✓	✓
Front Cupholders	✓	✓
Front Door Pockets	✓	✓
Front Seatback Storage	✓	✓
Leather Steering Wheel	✓	✓
Heated Steering Wheel	✓	—
Dual Zone Climate Control	✓	✓
Interior Air Filtration	✓	✓
Extended Cabin Heating/Cooling	✓	✓
Dual Vanity Mirrors	✓	✓
Auto-Dimming Rearview Mirror	✓	✓
Turn Signal Indicators in Mirrors	✓	✓
Front View Camera	—	✓
Side View Camera	—	✓
Front Parking Sensors	—	✓
Rear Parking Sensors	—	✓
Automatic Parking Assist	—	✓
Adaptive Cruise Control	—	✓
Rear Cupholders	—	✓
Rear Door Pockets	—	✓
Overhead Console with Storage	—	✓
Wood Trim on Steering Wheel	—	✓
Rear Ventilation Ducts	—	✓
Sun Sensor	—	✓

In Car Entertainment

Feature	BMW	Mercedes-Benz
Infotainment Display	12.3 in	12.8 in
AM/FM Stereo	✓	✓
Premium Speaker Brand	Harman/Kardon	Burmester
Stereo Power	464W	710W
Speaker System	16	15
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	6 months
Subwoofer Count	—	2
Android Auto (Wireless)	—	✓
Apple CarPlay (Wireless)	—	✓
Memory Card Slot	—	✓
Speed Sensitive Volume Control	—	✓

Power Feature

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

Frontseats

Feature	BMW	Mercedes-Benz
Front Head Room	38.9 in.	42.1 in.
Front Leg Room	42.1 in.	41.4 in.
Front Shoulder Room	57.2 in.	59.6 in.
Seat Material: Premium Leather	✓	—
Front Seat Type: Sport	✓	—
Driver Seat Power Adjustments	12-way	12-way
Driver Seat Height Adjustment	✓	✓
Driver Seat Lumbar Support	Power	Power
Driver Seat Thigh Extension	✓	✓
Driver Seat Memory Settings	2	3
Passenger Seat Height Adjustment	✓	✓
Passenger Seat Lumbar Support	Power	Power
Passenger Seat Thigh Extension	✓	✓
Passenger Seat Memory Settings	2	3
Driver Seat Heating	Multi-level	Multi-level
Passenger Seat Heating	Multi-level	Multi-level
Driver Seat Ventilation	✓	✓
Passenger Seat Ventilation	✓	✓
Seat Material: Leather	—	✓
Front Seat Type: Bucket	—	✓
Passenger Seat Power Adjustments	—	12-way
Seat Massage Function	—	✓

Rearseats

Feature	BMW	Mercedes-Benz
Rear Head Room	33.6 in.	39.4 in.
Rear Leg Room	29.5 in.	43.8 in.
Rear Shoulder Room	46.9 in.	59.0 in.
Split-Folding Rear Seatback	✓	—
Folding Center Armrest	—	✓

Tires and Wheels

Feature	BMW	Mercedes-Benz
Wheel Finish	Painted Alloy	—
Wheel Size	20 x 10.5 in.	19 x 8.5 in
Tire Type	Performance	—
Tire Size	285/35R20	255/45R19
Wheel Material	—	Alloy
Run Flat Tires	—	✓

Suspension

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

Warranty

Feature	BMW	Mercedes-Benz
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.	4 yr./ 50000 mi.
Roadside Assistance	4 yr./ unlimited mi.	4 yr./ 50000 mi.
Complimentary Scheduled Maintenance	3 yr./ 36000 mi.	—
Hybrid Component Warranty	—	6 yr./ 62000 mi.

Frequently Asked Questions

Common questions about comparing the 2025 BMW M8 and 2025 Mercedes-Benz S-Class.

What is the primary performance gap between the M8 and the S-Class?

The primary gap lies in sheer output; the BMW M8 delivers 617 hp and 553 lb-ft of torque. Conversely, the Mercedes-Benz S-Class provides 442 hp and 413 lb-ft of torque, making the M8 significantly more power-dense.

How does the fuel consumption compare for these two luxury vehicles?

The Mercedes-Benz S-Class is far more efficient, achieving 24 combined MPG (21 City/31 Highway). The BMW M8 consumes premium fuel at a rate of only 17 combined MPG (15 City/22 Highway).

Does the M8 coupe or the S-Class sedan offer more space for luggage?

Despite being a coupe, the 2025 BMW M8 possesses slightly larger official cargo capacity at 14.8 cubic feet. The 2025 Mercedes-Benz S-Class sedan holds 12.8 cubic feet of cargo.

What is the precise MSRP disparity between the two models?

The 2025 BMW M8 carries an MSRP of $138,800, which is exactly $21,050 more expensive than the 2025 Mercedes-Benz S-Class starting price of $117,750.

Are the drivetrains mechanically different despite both being AWD?

Yes, while both utilize all-wheel drive, the M8 employs an 8-speed automatic transmission, whereas the S-Class is equipped with a 9-speed shiftable automatic transmission.

Which vehicle is physically larger for maneuverability considerations?

The Mercedes-Benz S-Class is substantially longer at 208.2 inches compared to the M8’s 191.8 inches, which may impact garage fitment. However, the S-Class is also wider at 76.9 inches.