2026 BMW 8 Series Gran Coupe vs 2026 Mercedes-Benz S-Class

$90,800 · Sedan

$119,500 · Sedan

Comparison Overview

Choosing between the 2026 BMW 8 Series Gran Coupe and the Mercedes-Benz S-Class often boils down to balancing outright luxury against real-world cost and performance. The $28,700 gap in MSRP is substantial, making the BMW start at just $90,800 versus the Mercedes' $119,500. While the S-Class boasts significantly more power with 442 hp compared to the BMW's 335 hp, the Bimmer fights back with superior fuel economy; the S-Class manages only 23 combined MPG, whereas the 8 Series, likely due to its RWD setup, offers better efficiency for daily driving. Furthermore, the S-Class is physically larger at 209.5 inches long, which impacts maneuverability. The decision hinges on whether you prioritize the prestige and massive performance advantage of the S-Class or the superior value proposition of the 8 Series Gran Coupe.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2026 BMW 8 Series Gran Coupe

The BMW 8 Series Gran Coupe is the better commuter due to its lower running costs implied by better fuel economy and a substantially lower initial price point.

👨‍👩‍👧‍👦 Best for Families

2026 Mercedes-Benz S-Class

The Mercedes-Benz S-Class wins for families due to its greater height at 59.2 inches and its larger overall length of 209.5 inches, suggesting better rear-seat comfort.

🏎️ Best for Enthusiasts

2026 Mercedes-Benz S-Class

Enthusiasts will prefer the S-Class because it offers significantly more power with 442 hp and 413 lb-ft of torque.

💰 Best Value

2026 BMW 8 Series Gran Coupe

The 2026 BMW 8 Series Gran Coupe provides much better value, costing $28,700 less than the S-Class while still offering respectable performance.

Choose the BMW 8 Series Gran Coupe if...

You prioritize saving money, given the $28,700 lower starting MSRP of $90,800.
You prefer slightly better fuel efficiency and are comfortable with the 335 hp output.
You prefer a slightly more compact sedan experience, measuring 200.3 inches in length.

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

You absolutely require the higher power output of 442 hp and 413 lb-ft of torque.
You need the assured traction provided by the All-Wheel Drive system.
You prefer a larger vehicle profile, evidenced by its 59.2-inch height and 209.5-inch length.

Key Dimensions

Dimension	BMW 8 Series Gran Coupe	Mercedes-Benz S-Class
Length	200.3"	209.5"
Width	76.1"	75.6"
Height	55.4"	59.2"
Wheelbase	119.0"	126.6"

Features Comparison

Safety

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

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	335 hp @ 5000 rpm	442 hp
Torque	369 lb-ft @ 1600 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	8-speed shiftable automatic	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 (recommended)	premium unleaded (required)
EPA Driving Range (City/Highway)	0/0 mi.	400.0/580.0 mi.
Fuel Tank Capacity	18.0 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	✓	✓
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	✓	✓
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/Cooling	✓	✓
Dual Vanity Mirrors	✓	✓
Auto-Dimming Rearview Mirror	✓	✓
Turn Signal Indicators in Mirrors	✓	✓
Front View Camera	—	✓
Side View Camera	—	✓
Automatic Parking Assist	—	✓
Adaptive Cruise Control	—	✓
Overhead Console with Storage	—	✓
Wood Trim on Steering Wheel	—	✓
Dual Zone Climate Control	—	✓
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	✓	✓
USB Port with External Media Control	✓	✓
Satellite Radio	✓	✓
Satellite Radio Trial Period	12 months	6 months
Speed Sensitive Volume Control	✓	✓
Subwoofer Count	—	2
Android Auto (Wireless)	—	✓
Apple CarPlay (Wireless)	—	✓
Auxiliary Audio Input	—	✓

Power Feature

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

Frontseats

Feature	BMW	Mercedes-Benz
Front Head Room	39.1 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	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	✓	✓
Passenger Seat Memory Settings	2	3
Driver Seat Heating	Multi-level	Multi-level
Passenger Seat Heating	Multi-level	Multi-level
Seat Material: Leather	—	✓
Front Seat Type: Bucket	—	✓
Driver Seat Ventilation	—	✓
Passenger Seat Ventilation	—	✓
Seat Massage Function	—	✓

Rearseats

Feature	BMW	Mercedes-Benz
Rear Head Room	37.0 in.	39.4 in.
Rear Leg Room	36.6 in.	43.8 in.
Rear Shoulder Room	54.6 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 9.0 in	19 x 8.5 in
Tire Size	275/35R19	255/45R19
Run Flat Tires	✓	✓
Wheel Material	—	Alloy

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 2026 BMW 8 Series Gran Coupe and 2026 Mercedes-Benz S-Class.

What is the main performance difference between the 2026 BMW 8 Series Gran Coupe and the S-Class?

The Mercedes-Benz S-Class has a substantial advantage in raw power, delivering 442 hp and 413 lb-ft of torque. The BMW 8 Series Gran Coupe is tuned for efficiency with 335 hp and 369 lb-ft of torque.

How much more expensive is the 2026 Mercedes-Benz S-Class?

The S-Class commands a significant premium, with an MSRP of $119,500 compared to the 8 Series Gran Coupe's $90,800, resulting in a $28,700 difference.

Is the BMW 8 Series Gran Coupe better for highway commuting fuel costs?

Based on available data, the S-Class is rated at only 23 combined MPG, suggesting the BMW, even if it consumes premium fuel, will likely be more economical on longer commutes due to its inherent efficiency advantage.

Which sedan offers more passenger or cargo room?

The S-Class is physically larger overall, with an extra 9.2 inches in length compared to the BMW. However, the BMW surprisingly offers slightly more storage with 15.5 cu ft of cargo space versus the S-Class's 12.8 cu ft.

Do I have to use All-Wheel Drive on the 2026 Mercedes-Benz S-Class?

Yes, the S-Class comes standard with All-Wheel Drive. In contrast, the BMW 8 Series Gran Coupe defaults to Rear Wheel Drive for its base configuration.

How do the transmissions compare between the two luxury sedans?

The S-Class utilizes a 9-speed shiftable automatic transmission, giving it an extra gear over the BMW 8 Series Gran Coupe's 8-speed shiftable automatic.