2025 Porsche 718 Cayman vs 2026 Mercedes-Benz E-Class

$72,800 · Coupe

$63,900 · Sedan

Comparison Overview

The most significant numerical disparity between the 2025 Porsche 718 Cayman and the 2026 Mercedes-Benz E-Class is the $8,900 difference in starting MSRP, with the E-Class priced at $63,900 versus the Cayman's $72,800. Performance metrics also diverge, as the Cayman generates 300 hp, outstripping the E-Class's 255 hp. Conversely, the E-Class offers superior efficiency, achieving 28 combined MPG compared to the Cayman's 24 combined MPG, a 4 MPG advantage. While the Cayman is significantly shorter at 172.4 inches versus the E-Class's 194.9 inches, the Mercedes compensates with more torque, delivering 295 lb-ft versus Porsche's 280 lb-ft. The choice hinges on prioritizing 45 more horsepower and focused handling (Coupe body) over practical size and long-term fuel economy in the larger Sedan.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2026 Mercedes-Benz E-Class

The 2026 Mercedes-Benz E-Class is the superior commuter due to its 28 combined MPG rating and larger overall dimensions conducive to daily driving comfort.

👨‍👩‍👧‍👦 Best for Families

2026 Mercedes-Benz E-Class

As a Sedan measuring 194.9 inches long, the 2026 Mercedes-Benz E-Class inherently offers more passenger and structural volume than the compact 172.4-inch Cayman Coupe.

🏎️ Best for Enthusiasts

2025 Porsche 718 Cayman

The 2025 Porsche 718 Cayman appeals more to driving enthusiasts by delivering 300 hp and featuring a dedicated, lower-slung Coupe body structure.

💰 Best Value

2026 Mercedes-Benz E-Class

The 2026 Mercedes-Benz E-Class offers better efficiency (28 MPG vs 24 MPG) and a lower initial cost, saving $8,900 at the point of purchase.

Choose the Porsche 718 Cayman if...

You prioritize maximum driver engagement and higher peak horsepower, as the Cayman offers 300 hp.
Your driving budget accommodates the $72,800 MSRP and the requirement for premium unleaded fuel.
A compact footprint, evidenced by the 172.4-inch length, is essential for garage fitment or perceived agility.

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

Maximizing fuel economy is critical, with the E-Class achieving 33 highway MPG versus the Cayman's 27 highway MPG.
You require slightly greater low-end pulling power, as the E-Class produces 295 lb-ft of torque compared to 280 lb-ft.
A lower starting price of $63,900 and a more spacious Sedan body style are primary purchasing factors.

Key Dimensions

Dimension	Porsche 718 Cayman	Mercedes-Benz E-Class
Length	172.4"	194.9"
Width	70.9"	74.0"
Height	51.0"	57.9"
Wheelbase	97.4"	116.6"

Features Comparison

Safety

Feature	Porsche	Mercedes-Benz
Post-Collision Safety System	✓	✓
Dual Front Side-Mounted Airbags	✓	✓
Front Head Airbags	✓	✓
Passenger Airbag Occupant Sensing Deactivation	✓	✓
Electronic Stability Control	✓	✓
Traction Control System	✓	✓
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	✓	✓
Xenon High-Intensity Discharge Headlights	✓	—
Adaptive Headlights	✓	✓
Daytime Running Lights	✓	✓
Cornering Lights	✓	—
Headlight Washers	✓	—
Front Headrests	2	2
Front Integrated Headrests	✓	—
Anti-Theft Alarm System (Remote)	✓	✓
Engine Immobilizer	✓	✓
Blind Spot Monitor	—	✓
Driver Attention Alert	—	✓
Pre-Collision Safety System	—	✓
Rear Head Airbags	—	✓
LATCH System	—	✓
Rear Door Child Safety Locks	—	✓
Brake Drying	—	✓
LED Headlights	—	✓
Integrated Turn Signal Mirrors	—	✓
Front Power Adjustable Headrests	—	✓
Rear Headrests	—	3
Rear Height Adjustable Headrests	—	✓
Rear Center 3-Point Seatbelt	—	✓

Engine

Feature	Porsche	Mercedes-Benz
Base Engine Displacement	2.0 L	2.0 L
Number of Cylinders	flat 4	inline 4
Base Engine Type	gas	mild hybrid
Horsepower	300 hp @ 6500 rpm	255 hp @ 5800 rpm
Torque	280 lb-ft @ 1950 rpm	295 lb-ft @ 2000 rpm
Number of Valves	16	16
Camshaft Type	Double overhead cam (DOHC)	Double overhead cam (DOHC)
Variable Valve Timing	Variable	Variable
Fuel Injection Type	✓	✓

Drive Train

Feature	Porsche	Mercedes-Benz
Transmission Type	7-speed automated manual	9-speed shiftable automatic
Drivetrain Type	rear wheel drive	rear wheel drive

Fuel

Feature	Porsche	Mercedes-Benz
Fuel Type	premium unleaded (required)	premium unleaded (required)
EPA Fuel Economy (City/Highway)	21/27 MPG	25/33 MPG
EPA Fuel Economy (Combined)	24 MPG	28 MPG
EPA Driving Range (City/Highway)	298.2/383.4 mi.	435.0/574.2 mi.
Fuel Tank Capacity	14.2 gal.	17.4 gal.

Comfort & Convenience

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

In Car Entertainment

Feature	Porsche	Mercedes-Benz
AM/FM Stereo	✓	✓
Stereo Power	150W	—
Speaker System	8	6
Apple CarPlay (Wired)	✓	—
USB Port	✓	✓
USB Port with External Media Control	✓	✓
Memory Card Slot	✓	—
Satellite Radio	✓	✓
Satellite Radio Trial Period	3 months	6 months
Infotainment Display	—	14.4 in
Android Auto (Wireless)	—	✓
Apple CarPlay (Wireless)	—	✓

Power Feature

Feature	Porsche	Mercedes-Benz
One-Touch Power Windows	2	4
Remote Keyless Entry	✓	—
Heated Mirrors	✓	✓
Moonroof Type	—	1st Row Power Glass Extended
Keyless Entry	—	✓

Frontseats

Feature	Porsche	Mercedes-Benz
Seat Material: Leather	✓	—
Front Seat Type: Sport	✓	—
Driver Seat Power Adjustments	2-way	10-way
Driver Seat Manual Adjustments	4-way	—
Driver Seat Height Adjustment	✓	✓
Passenger Seat Power Adjustments	2-way	10-way
Passenger Seat Manual Adjustments	4-way	—
Passenger Seat Height Adjustment	✓	✓
Driver Seat Heating	Multi-level	Multi-level
Passenger Seat Heating	Multi-level	Multi-level
Front Head Room	—	37.3 in.
Front Leg Room	—	41.5 in.
Front Shoulder Room	—	57.8 in.
Seat Material: Leatherette	—	✓
Front Seat Type: Bucket	—	✓
Driver Seat Lumbar Support	—	Power
Driver Seat Thigh Extension	—	✓
Driver Seat Memory Settings	—	3
Passenger Seat Lumbar Support	—	Power
Passenger Seat Thigh Extension	—	✓
Passenger Seat Memory Settings	—	3

Rearseats

Feature	Porsche	Mercedes-Benz
Rear Head Room	—	37.6 in.
Rear Leg Room	—	36.2 in.
Rear Shoulder Room	—	57.1 in.
Split-Folding Rear Seatback	—	✓
Folding Center Armrest	—	✓

Tires and Wheels

Feature	Porsche	Mercedes-Benz
Wheel Material	Alloy	—
Wheel Size	18 x 9.5 in.	18 x 8.0 in
Tire Type	Performance	—
Tire Size	265/45R Z	225/55R18
Wheel Finish	—	Painted Alloy
Run Flat Tires	—	✓

Suspension

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

Warranty

Feature	Porsche	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./ 50000 mi.	4 yr./ 50000 mi.
Hybrid Component Warranty	—	6 yr./ 62000 mi.

Frequently Asked Questions

Common questions about comparing the 2025 Porsche 718 Cayman and 2026 Mercedes-Benz E-Class.

Which vehicle has better acceleration based on published specifications?

Based strictly on provided specifications, the 2025 Porsche 718 Cayman should accelerate faster due to its superior horsepower output of 300 hp versus the E-Class's 255 hp. While the E-Class has slightly more torque (295 lb-ft vs 280 lb-ft), the Cayman’s power-to-weight ratio, typical of its architecture, is generally optimized for quicker sprints.

How does the difference in transmission affect the driving experience?

The Cayman utilizes a 7-speed automated manual optimized for quick, performance-oriented shifts, while the E-Class features a 9-speed shiftable automatic designed for smoother power delivery and efficiency. The E-Class's extra two gears likely contribute to its superior 28 combined MPG rating.

Is the Mercedes E-Class significantly larger than the Porsche Cayman?

Yes, the dimensions show a clear difference; the E-Class Sedan is 194.9 inches long, making it 22.5 inches longer than the Cayman Coupe's 172.4-inch length. This larger physical size impacts both interior volume and cargo utility, though the Cayman still boasts slightly more listed cargo capacity at 15 cu ft versus 12.7 cu ft.

Are both vehicles designed to use the same type of gasoline?

Both the 2025 Porsche 718 Cayman and the 2026 Mercedes-Benz E-Class explicitly require premium unleaded fuel. This requirement adds to the long-term running costs for both vehicles, regardless of their stated MPG differences.

What is the long-term ownership cost implication based on the MPG difference?

The E-Class's 4 MPG advantage in combined fuel economy (28 MPG vs 24 MPG) translates to fewer stops at the pump over the lifespan of the vehicle, offsetting some of the initial $8,900 price savings the E-Class offers.

Which vehicle features the better torque distribution for immediate responsiveness?

The 2026 Mercedes-Benz E-Class technically offers higher peak torque at 295 lb-ft compared to the Cayman’s 280 lb-ft, suggesting stronger initial responsiveness or towing capability, although the Cayman's RWD layout and lower weight usually translate its available power more directly.