VS
At a Glance
Power
335hp @ 5000
532hp @ 6500
Torque
368lb-ft @ 1600
449lb-ft @ 1950
Fuel
25 mpg est.
—
Engine
3.0 L/183ci
3.6 L/219ci
Choosing between the BMW 8 Series and the Porsche 911 is one of the most common decisions car buyers in the United States face. The BMW 8 Series delivers 335hp @ 5000 while the Porsche 911 produces 532hp @ 6500. Pricing starts at $94,500 for the 8 Series and $254,300 for the 911. Both vehicles have their merits. The right choice depends on your priorities: fuel economy, performance, towing ability, safety features or total cost of ownership. This comparison covers every specification available so you can make an informed decision.
Specification
BMW 8 Series840i Convertible 2026 - From $94,500
Porsche 911Spirit 70 Cabriolet 2026 - From $254,300
Performance
Power Output (hp)
335hp @ 5000
532hp @ 6500
Torque (lb-ft)
368lb-ft @ 1600
449lb-ft @ 1950
Engine & Drivetrain
Engine Capacity
3.0 L/183ci
3.6 L/219ci
Engine Layout
Inline
Flat/Boxer
Cylinders
6
6
Fuel Type
Gasoline
Hybrid
Forced Induction Device
Turbocharged
—
Transmission
Automatic
Automatic
Number of Gears
8
8
Drive Wheels
Rear Wheel Drive
Rear Wheel Drive
Fuel Economy
Fuel Economy (Combined, est.)
25 mpg est.
—
Fuel Economy - City (mpg)
21mpg
—
Fuel Economy - Highway (mpg)
29mpg
—
Fuel Tank Capacity (gal)
18gal
16.6gal
Dimensions
Length (in)
191.1in
178.5in
Width (in)
74.9in
72.9in
Height (in)
52.7in
50.9in
Wheelbase (in)
111.1in
96.5in
Curb Weight (lbs)
4211lbs
3724lbs
Safety
ABS
✓ Standard
✓ Standard
Brake Assist
✓ Standard
✓ Standard
Stability Control
✓ Standard
✓ Standard
Traction Control
✓ Standard
✓ Standard
Driver Airbag
✓ Standard
✓ Standard
Passenger Airbag
✓ Standard
✓ Standard
Side Airbags Front
✓ Standard
✓ Standard
Curtain Airbags
—
✓ Standard
Features & Tech
Air Conditioning
✓ Standard
✓ Standard
Climate Control
✓ Standard
✓ Standard
Cruise Control
✓ Standard
✓ Standard
Adaptive Cruise Control
✓ Standard
✓ Standard
Bluetooth
✓ Standard
✓ Standard
Backup Camera
✓ Standard
✓ Standard
Rear Parking Aid
✓ Standard
✓ Standard
Heated Seats
✓ Standard
✓ Standard
Power Seat Adjustment
✓ Standard
✓ Standard
Keyless Entry
✓ Standard
✓ Standard
Alloy Wheels
✓ Standard
✓ Standard
The Verdict
Which Wins?
Overall Winner
Tie
1 / 4 categories
Performance
911
Fuel Economy
Tied
Value
8 Series
Practicality
Tied
Pros & Cons
BMW 8 Series
Lower starting price ($94,500)
Few notable weaknesses
Porsche 911
Well-rounded specification
Higher starting price
Frequently Asked Questions
Which has more power, the 8 Series or 911?
The 8 Series produces 335hp @ 5000 and 368lb-ft @ 1600 of torque while the 911 delivers 532hp @ 6500 and 449lb-ft @ 1950 of torque. The 911 is the more powerful option.
What is the price difference between the 8 Series and 911?
The 8 Series starts from $94,500 and the 911 from $254,300. The 8 Series is cheaper by $159,800 at this variant level. Final on-the-road pricing varies by dealer and specification.
Should I buy the 8 Series or the 911?
It depends on your priorities. If fuel economy matters most, check the mpg figures above. If you need towing capacity, compare the towing ratings. For day-to-day driving - commutes, school runs and highway trips - consider ground clearance, service network coverage, and total cost of ownership including insurance and maintenance. Use the spec tables above to compare every detail before making your decision.
Also Consider