2025 BMW 8 Series Gran Coupe vs 2025 Porsche 911
Comparison Overview
The 2025 BMW 8 Series Gran Coupe ignites the asphalt with its accessible luxury, boasting 335 horsepower from a potent standard engine and a comfortable 15.5 cu ft of cargo space for practicality. Contrast this with the legendary 2025 Porsche 911, a pure driver’s machine delivering 388 horsepower, though trading space for its visceral appeal with a mere 4.8 cu ft of storage. The price gulf is significant, with the BMW starting at $91,700 compared to the Porsche's steep $120,100 MSRP—a difference of $28,400. While the 911 packs 53 more horsepower, the BMW offers superior daily efficiency, achieving 24 combined MPG versus the 911's 21 combined MPG. Furthermore, the BMW’s 200.3-inch length contrasts sharply with the agile 178.8-inch length of the 911, showcasing the former's grand touring comfort against the latter's focused sports car dimensions.
Size Comparison
Performance
Fuel Efficiency
Full Specifications
Our Verdicts
2025 BMW 8 Series Gran Coupe
The BMW 8 Series Gran Coupe wins for commuters due to its superior fuel economy rating of 24 combined MPG compared to the 911's 21.
2025 BMW 8 Series Gran Coupe
The 8 Series Gran Coupe is the only viable choice for carrying more than one passenger plus luggage, offering 15.5 cu ft of cargo space versus the 911's minimal 4.8 cu ft.
2025 Porsche 911
The Porsche 911 is the superior enthusiast machine, delivering 388 horsepower and a specialized automated manual transmission focus.
2025 BMW 8 Series Gran Coupe
The BMW offers a luxurious experience at a significantly lower entry point of $91,700, undercutting the Porsche by $28,400.
Choose the BMW 8 Series Gran Coupe if...
- You prioritize better daily running costs, thanks to the 24 combined MPG fuel economy.
- You need a true four-door vehicle that can comfortably manage luggage with 15.5 cu ft of trunk space.
- You want engaging RWD performance without crossing the six-figure price barrier, starting at $91,700.
Choose the Porsche 911 if...
- Absolute peak performance matters most, evidenced by its 388 horsepower output.
- You demand the focused dynamics and compact footprint of a true two-door sports coupe (178.8 inches long).
- You require the exclusive driving engagement provided by the 8-speed automated manual transmission.
Key Dimensions
| Dimension | BMW 8 Series Gran Coupe | Porsche 911 |
|---|---|---|
| Length | 200.3" | 178.8" |
| Width | 76.1" | 72.9" |
| Height | 55.4" | 51.2" |
| Wheelbase | 119.0" | 96.5" |
Features Comparison
Safety
| Feature | BMW | Porsche |
|---|---|---|
| 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 | ✓ | ✓ |
| 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 Multi-Adjustable Headrests | ✓ | — |
| Rear Headrests | 2 | — |
| Rear Integrated Headrests | ✓ | — |
| Rear Center 3-Point Seatbelt | ✓ | — |
| Anti-Theft Alarm System (Remote) | ✓ | ✓ |
| Engine Immobilizer | ✓ | ✓ |
| Lane Keeping Assist System | — | ✓ |
| Headlight Delay-Off | — | ✓ |
| Front Integrated Headrests | — | ✓ |
Engine
| Feature | BMW | Porsche |
|---|---|---|
| Base Engine Displacement | 3.0 L | 3.0 L |
| Number of Cylinders | inline 6 | flat 6 |
| Base Engine Type | gas | gas |
| Horsepower | 335 hp @ 5000 rpm | 388 hp @ 6500 rpm |
| Torque | 369 lb-ft @ 1600 rpm | 332 lb-ft @ 2000 rpm |
| 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 | Porsche |
|---|---|---|
| Transmission Type | 8-speed shiftable automatic | 8-speed automated manual |
| Drivetrain Type | rear wheel drive | rear wheel drive |
| Rear Differential Type | Limited Slip | Limited Slip |
Fuel
| Feature | BMW | Porsche |
|---|---|---|
| Fuel Type | premium unleaded (recommended) | premium unleaded (required) |
| EPA Fuel Economy (City/Highway) | 21/29 MPG | 18/25 MPG |
| EPA Fuel Economy (Combined) | 24 MPG | 21 MPG |
| EPA Driving Range (City/Highway) | 378.0/522.0 mi. | 298.8/415.0 mi. |
| Fuel Tank Capacity | 18.0 gal. | 16.6 gal. |
Comfort & Convenience
| Feature | BMW | Porsche |
|---|---|---|
| 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 | ✓ | ✓ |
| 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 | ✓ | — |
| Tilt and Telescopic Steering Wheel | — | ✓ |
| Front Parking Sensors | — | ✓ |
| Rear Parking Sensors | — | ✓ |
| Dual Zone Climate Control | — | ✓ |
| Extended Cabin Heating | — | ✓ |
In Car Entertainment
| Feature | BMW | Porsche |
|---|---|---|
| Infotainment Display | 12.3 in | — |
| AM/FM Stereo | ✓ | ✓ |
| Premium Speaker Brand | Harman/Kardon | — |
| Stereo Power | 464W | 150W |
| Speaker System | 16 | 8 |
| Surround Audio | Discrete | — |
| Android Auto (Wired) | ✓ | — |
| Apple CarPlay (Wired) | ✓ | — |
| USB Port | ✓ | ✓ |
| USB Port with External Media Control | ✓ | ✓ |
| Satellite Radio | ✓ | ✓ |
| Satellite Radio Trial Period | 12 months | 3 months |
| Speed Sensitive Volume Control | ✓ | — |
| Android Auto (Wireless) | — | ✓ |
| Apple CarPlay (Wireless) | — | ✓ |
Power Feature
| Feature | BMW | Porsche |
|---|---|---|
| One-Touch Power Windows | 4 | 2 |
| Moonroof Type | 1st Row Power Glass Extended | — |
| Keyless Entry | ✓ | ✓ |
| Reverse Tilt Passenger Mirror | ✓ | — |
| Heated Mirrors | ✓ | ✓ |
Frontseats
| Feature | BMW | Porsche |
|---|---|---|
| Front Head Room | 39.1 in. | — |
| Front Leg Room | 42.1 in. | — |
| Front Shoulder Room | 57.2 in. | — |
| Seat Material: Premium Leather | ✓ | — |
| Front Seat Type: Sport | ✓ | ✓ |
| Driver Seat Power Adjustments | 10-way | 6-way |
| Driver Seat Height Adjustment | ✓ | ✓ |
| Driver Seat Lumbar Support | Power | — |
| Driver Seat Thigh Extension | ✓ | — |
| Driver Seat Memory Settings | 2 | — |
| Passenger Seat Power Adjustments | 10-way | 6-way |
| Passenger Seat Height Adjustment | ✓ | ✓ |
| Passenger Seat Lumbar Support | Power | — |
| Passenger Seat Thigh Extension | ✓ | — |
| Passenger Seat Memory Settings | 2 | — |
| Driver Seat Heating | Multi-level | Multi-level |
| Passenger Seat Heating | Multi-level | Multi-level |
| Seat Material: Leatherette | — | ✓ |
| Driver Seat Manual Adjustments | — | 2-way |
| Passenger Seat Manual Adjustments | — | 2-way |
Rearseats
| Feature | BMW | Porsche |
|---|---|---|
| Rear Head Room | 37.0 in. | — |
| Rear Leg Room | 36.6 in. | — |
| Rear Shoulder Room | 54.6 in. | — |
| Split-Folding Rear Seatback | ✓ | — |
| Folding Center Armrest | ✓ | — |
Tires and Wheels
| Feature | BMW | Porsche |
|---|---|---|
| Wheel Finish | Painted Alloy | Painted Alloy |
| Wheel Size | 19 x 9.0 in | 20 x 11.5 in. |
| Tire Size | 275/35R19 | 295/35R20 |
| Run Flat Tires | ✓ | — |
| Tire Type | — | Performance |
Suspension
| Feature | BMW | Porsche |
|---|---|---|
| Four-Wheel Independent Suspension | ✓ | ✓ |
| Front Stabilizer Bar | ✓ | ✓ |
| Rear Stabilizer Bar | ✓ | ✓ |
Warranty
| Feature | BMW | Porsche |
|---|---|---|
| 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./ unlimited mi. | 4 yr./ 50000 mi. |
| Complimentary Scheduled Maintenance | 3 yr./ 36000 mi. | — |
Frequently Asked Questions
Common questions about comparing the 2025 BMW 8 Series Gran Coupe and 2025 Porsche 911.
What is the key performance difference between the 2025 BMW 8 Series Gran Coupe and the 2025 Porsche 911?
The Porsche 911 holds a significant advantage in raw power, boasting 388 horsepower compared to the BMW 8 Series Gran Coupe’s 335 hp. This 53 hp difference directly translates to sharper acceleration potential for the 911, while the BMW focuses on balanced grand touring performance.
How much more practical is the BMW 8 Series Gran Coupe for daily errands than the 911?
The BMW is vastly more practical, offering 15.5 cubic feet of cargo capacity in its sedan body style. In sharp contrast, the Porsche 911 only provides 4.8 cubic feet, making the 8 Series the realistic choice for carrying golf clubs or larger shopping hauls.
Is the difference in MSRP substantial enough to influence a buying decision?
Yes, the price difference is substantial; the 2025 Porsche 911 starts at $120,100, meaning the 2025 BMW 8 Series Gran Coupe offers a $28,400 lower entry price.
Which vehicle is more economical for long-distance highway driving?
The BMW 8 Series Gran Coupe holds the edge in efficiency, rating at 29 MPG highway compared to the 911's 25 MPG highway rating. Both require premium unleaded fuel, but the BMW returns better overall miles per gallon.
How does the exterior sizing affect the driving experience between these two RWD vehicles?
The BMW is significantly larger, measuring 200.3 inches in length and 76.1 inches wide, suggesting a planted, comfortable highway presence. The 911 is notably more compact at 178.8 inches long and 72.9 inches wide, contributing to its signature agile and responsive handling characteristics.
Does the transmission type differ between these models?
Yes, the two use distinct automatic technologies; the 8 Series Gran Coupe utilizes a traditional 8-speed shiftable automatic. Conversely, the 911 features an 8-speed automated manual, which often delivers quicker, more direct shifts preferred by driving purists.
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