2025 Porsche 718 Cayman vs 2026 BMW 5 Series

$72,800 · Coupe

$59,900 · Sedan

Comparison Overview

The 2025 Porsche 718 Cayman explodes onto the scene as the pure sports car driver's dream, boasting 300 hp channeled exclusively through its nimble, RWD platform. Conversely, the 2026 BMW 5 Series presents itself as the sophisticated, practical executive sedan, offering a higher torque figure of 295 lb-ft while maintaining refinement. The Cayman immediately distinguishes itself with its athletic dimensions (172.4 inches long) and superior fuel economy at 24 MPG combined. However, the BMW closes the gap in outright torque despite producing 255 hp, and offers a significant $12,900 MSRP advantage over the $72,800 Porsche. While the Cayman prioritizes agility and driver engagement, the 5 Series trades 45 horsepower for daily usability, greater space (18.4 cu ft cargo), and a $59,900 entry point, illustrating a classic conflict between focused passion and pragmatic luxury.

Size Comparison

Performance

Fuel Efficiency

Full Specifications

Our Verdicts

🚗 Best for Commuters

2026 BMW 5 Series

The 2026 BMW 5 Series is the superior commuter due to its vastly better fuel economy, achieving 27 MPG highway compared to the Cayman's 27 MPG combined figure.

👨‍👩‍👧‍👦 Best for Families

2026 BMW 5 Series

The 2026 BMW 5 Series wins decisively by offering a full sedan body and a larger 18.4 cu ft of cargo space versus the Cayman's 15 cu ft.

🏎️ Best for Enthusiasts

2025 Porsche 718 Cayman

The 2025 Porsche 718 Cayman is engineered for driving thrills, delivering 300 hp in a low-slung, two-seater coupe format.

💰 Best Value

2026 BMW 5 Series

The 2026 BMW 5 Series offers significantly more space and usable power for $12,900 less than the specialized Porsche.

Choose the Porsche 718 Cayman if...

You demand a dedicated, RWD sports coupe experience where performance is paramount.
You appreciate precise gear changes from a specialized 7-speed automated manual transmission.
You value a smaller footprint, measuring only 172.4 inches in length for superior agility.

Choose the BMW 5 Series if...

Your budget is firmly set below $60,000, as the MSRP is $59,900.
You need practical sedan dimensions and slightly more cargo capacity (18.4 cu ft).
You prefer slightly higher torque (295 lb-ft) for low-end grunt over peak horsepower.

Key Dimensions

Dimension	Porsche 718 Cayman	BMW 5 Series
Length	172.4"	199.2"
Width	70.9"	74.8"
Height	51.0"	59.6"
Wheelbase	97.4"	117.9"

Features Comparison

Safety

Feature	Porsche	BMW
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	—	✓
Lane Departure Warning	—	✓
Lane Keeping Assist System	—	✓
Driver Attention Alert	—	✓
Pre-Collision Safety System	—	✓
Rear Head Airbags	—	✓
LATCH System	—	✓
Rear Door Child Safety Locks	—	✓
Brake Drying	—	✓
LED Headlights	—	✓
Self-Leveling Headlights	—	✓
Integrated Turn Signal Mirrors	—	✓
Front Height Adjustable Headrests	—	✓
Rear Headrests	—	3
Rear Height Adjustable Headrests	—	✓
Rear Center 3-Point Seatbelt	—	✓

Engine

Feature	Porsche	BMW
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 @ 4700 rpm
Torque	280 lb-ft @ 1950 rpm	295 lb-ft @ 1600 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	BMW
Transmission Type	7-speed automated manual	8-speed shiftable automatic
Drivetrain Type	rear wheel drive	rear wheel drive
Center Differential Type	—	Limited Slip

Fuel

Feature	Porsche	BMW
Fuel Type	premium unleaded (required)	premium unleaded (recommended)
EPA Fuel Economy (City/Highway)	21/27 MPG	—
EPA Fuel Economy (Combined)	24 MPG	—
EPA Driving Range (City/Highway)	298.2/383.4 mi.	0/0 mi.
Fuel Tank Capacity	14.2 gal.	15.9 gal.

Comfort & Convenience

Feature	Porsche	BMW
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	—	✓
Wireless Charging Pad	—	✓
Rear Cupholders	—	✓
Rear Door Pockets	—	✓
Rear Ventilation Ducts	—	✓
Turn Signal Indicators in Mirrors	—	✓

In Car Entertainment

Feature	Porsche	BMW
AM/FM Stereo	✓	✓
Stereo Power	150W	205W
Speaker System	8	12
Apple CarPlay (Wired)	✓	✓
USB Port	✓	✓
USB Port with External Media Control	✓	✓
Memory Card Slot	✓	—
Satellite Radio	✓	✓
Satellite Radio Trial Period	3 months	12 months
Infotainment Display	—	14.9 in
Premium Speaker Brand	—	Harman/Kardon
Subwoofer Count	—	2
Android Auto (Wired)	—	✓
Speed Sensitive Volume Control	—	✓

Power Feature

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

Frontseats

Feature	Porsche	BMW
Seat Material: Leather	✓	—
Front Seat Type: Sport	✓	✓
Driver Seat Power Adjustments	2-way	8-way
Driver Seat Manual Adjustments	4-way	2-way
Driver Seat Height Adjustment	✓	✓
Passenger Seat Power Adjustments	2-way	8-way
Passenger Seat Manual Adjustments	4-way	2-way
Passenger Seat Height Adjustment	✓	✓
Driver Seat Heating	Multi-level	Multi-level
Passenger Seat Heating	Multi-level	Multi-level
Front Head Room	—	38.8 in.
Front Leg Room	—	41.3 in.
Front Shoulder Room	—	59.2 in.
Seat Material: Leatherette	—	✓
Driver Seat Lumbar Support	—	Power
Driver Seat Thigh Extension	—	✓
Driver Seat Memory Settings	—	2
Passenger Seat Lumbar Support	—	Power
Passenger Seat Thigh Extension	—	✓

Rearseats

Feature	Porsche	BMW
Rear Head Room	—	37.5 in.
Rear Leg Room	—	37.0 in.
Rear Shoulder Room	—	56.9 in.
Split-Folding Rear Seatback	—	✓
Folding Center Armrest	—	✓

Tires and Wheels

Feature	Porsche	BMW
Wheel Material	Alloy	—
Wheel Size	18 x 9.5 in.	19 x 8.5 in
Tire Type	Performance	All Season
Tire Size	265/45R Z	245/45R19
Wheel Finish	—	Painted Alloy

Suspension

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

Warranty

Feature	Porsche	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./ 50000 mi.	4 yr./ unlimited mi.
Complimentary Scheduled Maintenance	—	3 yr./ 36000 mi.

Frequently Asked Questions

Common questions about comparing the 2025 Porsche 718 Cayman and 2026 BMW 5 Series.

How does the performance difference between the 300 hp Cayman and the 255 hp 5 Series translate to real-world driving?

The Porsche 718 Cayman's higher 300 hp output, combined with its lighter, smaller frame (172.4 inches), will yield significantly quicker acceleration and sharper handling dynamics. The BMW 5 Series compensates somewhat with 295 lb-ft of torque versus the Cayman's 280 lb-ft, which may make the sedan feel punchy at low speeds.

What is the financial gap between these two vehicles?

The price difference is substantial, favoring the BMW significantly; the 2026 BMW 5 Series starts at $59,900, which is exactly $12,900 less than the 2025 Porsche 718 Cayman's MSRP of $72,800.

Which vehicle offers better fuel economy for daily driving?

The Porsche 718 Cayman is more fuel-efficient overall, achieving 24 MPG combined, while the 2026 BMW 5 Series trails slightly in the provided combined figures (though it uses regular fuel, which is cheaper).

Can the 718 Cayman realistically transport passengers or luggage?

The Cayman is strictly a driver-focused coupe, offering only 15 cu ft of cargo capacity across its two compartments. The BMW 5 Series sedan provides more usable family space with 18.4 cu ft of cargo capacity.

Are the driving setups similar since both are RWD?

No; while both utilize Rear Wheel Drive, the Cayman features a 7-speed automated manual transmission geared toward immediate response, whereas the 5 Series employs a smoother 8-speed shiftable automatic better suited for cruising comfort.

Which vehicle mandates premium fuel?

The 2025 Porsche 718 Cayman strictly requires premium unleaded fuel for its 300 hp engine. The 2026 BMW 5 Series specifies premium unleaded as recommended, implying it can likely run on regular octane if necessary.