2026 BMW M4 vs 2026 Mercedes-Benz S-Class

$81,300 · Coupe

$119,500 · Sedan

Comparison Overview

The primary divergence between the 2026 BMW M4 (car1) and the 2026 Mercedes-Benz S-Class (car2) is cost, with the S-Class demanding an MSRP of $119,500, which is $38,200 more than the M4's $81,300 entry price. Performance metrics show the M4 generating 473 hp to the S-Class's 442 hp, though the larger sedan counters with 413 lb-ft of torque against the M4's 406 lb-ft. Fuel economy is a stark contrast, as the RWD M4 lacks published MPG data while the AWD S-Class achieves a combined 23 MPG (20 city/29 highway). Dimensionally, the S-Class is 209.5 inches long, significantly surpassing the M4's 189.1 inches, but the M4 offers marginally more storage at 15.5 cu ft versus 12.8 cu ft. Furthermore, the M4 includes a traditional 6-speed manual transmission, whereas the S-Class utilizes a 9-speed automatic, catering to fundamentally different driving priorities.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2026 Mercedes-Benz S-Class

The 2026 Mercedes-Benz S-Class provides a better commuting experience due to its significantly higher 23 combined MPG rating and larger sedan dimensions.

👨‍👩‍👧‍👦 Best for Families

2026 Mercedes-Benz S-Class

The S-Class, as a larger sedan measuring 209.5 inches long with AWD capability, offers superior passenger accommodations compared to the M4 coupe.

🏎️ Best for Enthusiasts

2026 BMW M4

The 2026 BMW M4 appeals more to driving purists with its higher 473 hp output and standard 6-speed manual transmission.

💰 Best Value

2026 BMW M4

The 2026 BMW M4 is the superior value proposition, costing $38,200 less while still delivering 473 horsepower.

Choose the BMW M4 if...

The driver prioritizes driver engagement and demands a 6-speed manual transmission.
Budget is a major constraint, as the M4 undercuts the S-Class price by $38,200.
Maximizing outright horsepower (473 hp vs. 442 hp) in a smaller, RWD package is the goal.

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

Fuel efficiency is important, evidenced by the S-Class achieving 23 combined MPG.
All-wheel drive security and a more conventional 9-speed automatic transmission are required.
Superior passenger comfort and a total length of 209.5 inches are necessary for regular use.

Key Dimensions

Dimension	BMW M4	Mercedes-Benz S-Class
Length	189.1"	209.5"
Width	74.3"	75.6"
Height	55.0"	59.2"
Wheelbase	112.5"	126.6"

Features Comparison

Safety

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

Engine

Feature	BMW	Mercedes-Benz
Base Engine Displacement	3.0 L	3.0 L
Number of Cylinders	inline 6	inline 6
Base Engine Type	gas	mild hybrid
Horsepower	473 hp @ 6250 rpm	442 hp
Torque	406 lb-ft @ 2650 rpm	413 lb-ft
Number of Valves	24	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	6-speed manual	9-speed shiftable automatic
Drivetrain Type	rear wheel drive	all wheel drive
Rear Differential Type	Limited Slip	—
Center Differential Type	—	Limited Slip

Fuel

Feature	BMW	Mercedes-Benz
Fuel Type	premium unleaded (required)	premium unleaded (required)
EPA Driving Range (City/Highway)	0/0 mi.	400.0/580.0 mi.
Fuel Tank Capacity	15.6 gal.	20.0 gal.
EPA Fuel Economy (City/Highway)	—	20/29 MPG
EPA Fuel Economy (Combined)	—	23 MPG

Comfort & Convenience

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

In Car Entertainment

Feature	BMW	Mercedes-Benz
Infotainment Display	14.9 in	12.8 in
AM/FM Stereo	✓	✓
Premium Speaker Brand	Harman/Kardon	Burmester
Stereo Power	464W	710W
Speaker System	16	15
Subwoofer Count	2	2
Surround Audio	Discrete	Discrete
Android Auto (Wireless)	✓	✓
Apple CarPlay (Wireless)	✓	✓
USB Port	✓	✓
USB Port with External Media Control	✓	✓
Satellite Radio	✓	✓
Satellite Radio Trial Period	12 months	6 months
Auxiliary Audio Input	—	✓
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	40.3 in.	42.1 in.
Front Leg Room	41.7 in.	41.4 in.
Front Shoulder Room	55.1 in.	59.6 in.
Seat Material: Premium Leather	✓	—
Front Seat Type: Sport	✓	—
Driver Seat Power Adjustments	10-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 Power Adjustments	10-way	12-way
Passenger Seat Height Adjustment	✓	✓
Passenger Seat Lumbar Support	Power	Power
Passenger Seat Thigh Extension	✓	✓
Driver Seat Heating	Multi-level	Multi-level
Passenger Seat Heating	Multi-level	Multi-level
Seat Material: Leather	—	✓
Front Seat Type: Bucket	—	✓
Passenger Seat Memory Settings	—	3
Driver Seat Ventilation	—	✓
Passenger Seat Ventilation	—	✓
Seat Massage Function	—	✓

Rearseats

Feature	BMW	Mercedes-Benz
Rear Head Room	35.8 in.	39.4 in.
Rear Leg Room	34.7 in.	43.8 in.
Rear Shoulder Room	51.0 in.	59.0 in.
Split-Folding Rear Seatback	✓	—
Folding Center Armrest	—	✓

Tires and Wheels

Feature	BMW	Mercedes-Benz
Wheel Finish	Painted Alloy	—
Wheel Size	19 x 10.5 in	19 x 8.5 in
Tire Type	Performance	—
Tire Size	285/35R Z	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.
Hybrid Component Warranty	8 yr./ 100000 mi.	6 yr./ 62000 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.	—

Frequently Asked Questions

Common questions about comparing the 2026 BMW M4 and 2026 Mercedes-Benz S-Class.

How significant is the performance difference between the 2026 M4 and the S-Class?

The BMW M4 outputs 473 hp, exceeding the Mercedes-Benz S-Class's 442 hp output. However, the S-Class has a slight edge in low-end pulling power with 413 lb-ft of torque compared to the M4's 406 lb-ft.

Is the M4 capable of being a fuel-efficient daily driver?

While the BMW M4's specific MPG figures were not provided, the Mercedes-Benz S-Class delivers a combined 23 MPG (20 city/29 highway), suggesting the M4 will likely lag behind due to its performance focus and lack of standardized fuel economy reporting in this data set.

Which vehicle provides better utility for hauling passengers and cargo?

The S-Class offers superior passenger volume as a larger sedan (209.5 inches long), but the M4 coupe offers slightly better dedicated cargo space at 15.5 cubic feet versus the S-Class's 12.8 cubic feet.

What justifies the $38,200 price difference between the two vehicles?

The higher MSRP of the S-Class ($119,500 vs. $81,300) reflects its positioning as a luxury sedan, incorporating All-Wheel Drive and likely higher standard comfort features, contrasting with the M4's focus on sporty RWD performance.

Does the transmission choice fundamentally alter the driving experience?

Yes; the M4 offers a pure driver connection with its 6-speed manual transmission, while the S-Class uses a modern, efficient 9-speed shiftable automatic transmission suitable for relaxed cruising.

How do the overall sizes compare for maneuvering and parking?

The M4 is notably smaller and nimbler at 189.1 inches long and 55.0 inches high, compared to the substantially larger S-Class, which measures 209.5 inches in length and 59.2 inches in height.