Porsche 911 vs BMW i8 Compare price, expert/user reviews, mpg, engines, safety, cargo capacity and other specs at a glance.

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User Ranking Drivers and owners ranked these cars in 9 categories.

New Car Pricing New listing price comparison and analysis.

2018 Porsche 911
Carrera 4 Cabriolet AWD
MSRP
$110,300
Invoice
N/A
Average Price Paid
$109,167
4 listings nationwide

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2019 BMW i8
Coupe AWD
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2018 Porsche 911
Carrera 4 Cabriolet AWD
No Data Available
2019 BMW i8
Coupe AWD
No Data Available

Used Car Pricing Used listing price comparison and analysis.

2018 Porsche 911
Carrera 4 Cabriolet AWD
CarGurus Instant Market Value
$133,772
2019 BMW i8
Coupe AWD
CarGurus Instant Market Value
$152,569

Expert Reviews Reviews from CarGurus experts.

2018 Porsche 911
Carrera 4 Cabriolet AWD
Nicole Wakelin Preview:

The Porsche 911 has been around for seven generations. Over the years, it has seen plenty of changes, including a continually evolving model lineup that ensures there’s a flavor of 911...

2019 BMW i8
Coupe AWD
Kyree Williams Preview:

The BMW i8 Coupe is instantly recognizable by its striking design: the scissor doors, the flowing, two-tone body, and the futuristic interior. It skips the 2018 model year and heads st...

User Reviews Reviews from CarGurus users who have driven or owned the car.

2018 Porsche 911
Carrera 4 Cabriolet AWD
writes:
Approximately equal power as M3 Porsche Handles much better More performance oriented
Power Ranked 2018 BMW M3 Sedan RWD worse.
"Little Lighter/25 more hp to crank "
Handling Ranked 2018 BMW M3 Sedan RWD worse.
"Because it does...it’s a coupe not a sedan "
5
writes:
Handling Ranked 2018 Chevrolet Corvette Stingray Z51 1LT Coupe RWD worse.
"I beat them in every event in SS class SCCA Autocross"
Back Seats Ranked 2017 Porsche 911 Carrera GTS better.
"It had them."
Cargo Capacity Ranked 2018 Chevrolet Corvette Stingray Z51 1LT Coupe RWD worse.
"Two large luggage compartments"
Value Ranked 2017 Porsche 911 Carrera GTS better.
"More family friendly"
2019 BMW i8
Coupe AWD
No User Reviews

Specs

2018 Porsche 911
Carrera 4 Cabriolet AWD
2019 BMW i8
Coupe AWD
Powertrain 6-Speed Automatic
Drivetrain
AWD
AWD
AWD
Fuel Economy, City
19 MPG
21 MPG
68 MPG
Fuel Economy, Highway
28 MPG
28 MPG
70 MPG
Fuel Tank Volume 16.9 gal 11.1 gal
Engine
Fuel Type
Gasoline
Gasoline
Gasoline
Power
370 hp @ 6,500 RPM
370 hp @ 6,500 RPM
--
Torque
331 lb-ft @ 1,700 RPM
331 lb-ft @ 1,700 RPM
--
Cylinders
6 cylinders
6 cylinders
3 cylinders
Compression Ratio
10:1
10:1
9.5:1
Displacement
3,000 cc
3,000 cc
1,500 cc
Bore x Stroke
3.58 in x 2.99 in
3.58 in x 2.99 in
3.23 in x 3.72 in
Safety
ABS Brakes Standard Standard
Driver Airbag Standard Standard
Passenger Airbag Standard Standard
Front Side Airbags Standard Standard
Curtain Airbags Standard Standard
NHTSA Crash Test Results
Comfort and Convenience
Leather Seats -- Standard
Air Conditioning Standard Standard
CD Player Standard Standard
Radio Standard Standard
Power Windows Standard Standard
Power Door Locks Standard Standard
Driver Power Seats Standard Standard
Passenger Power Seats Standard Standard
Interior
Maximum Seating 4 seats 4 seats
Front Legroom 41.6 in 43.1 in
Back Legroom -- 28.2 in
Payload and Towing
Cargo Volume 5.1 cu ft 4.7 cu ft
Maximum Payload 936 lbs --
Exterior
Length 177.1 in 184.9 in
Width 71.2 in 87.3 in
Height 50.7 in 50.8 in
Wheelbase 96.5 in 110.2 in

Available Options

2018 Porsche 911
Carrera 4 Cabriolet AWD

Exterior Colors

  • Agate Grey Metallic
  • Black
  • Carmine Red
  • Carrara White Metallic
  • Chalk
  • Custom Color
  • Custom Color Metallic
  • GT Silver Metallic
  • Graphite Blue Metallic
  • Guards Red
  • Jet Black Metallic
  • Lava Orange
  • Miami Blue
  • Night Blue Metallic
  • Racing Yellow
  • Rhodium Silver Metallic
  • Sapphire Blue Metallic
  • White

Option Packages

  • Bose Surround Sound System
  • Burmester High-End Surround Sound System
  • Heated Multifunction Sport Steering Wheel in Mahogany
  • Heated Multifunction Steering Wheel in Carbon Fiber
  • Light Design Package
  • Porsche Entry & Drive
  • Vehicle Key Painted and Key Pouch in Leather
  • Porsche Torque Vectoring (PTV)
  • Porsche Torque Vectoring Plus (PTV Plus)
  • Front Axle Lift System
  • Sport Exhaust System with Tailpipes in Silver
  • Sports Exhaust System with Tailpipes in Black
  • Door-Sill Guards in Carbon Fiber
  • Exterior Mirrors Lower Trim Painted in Black
  • Exterior Package Painted
  • High-Gloss Black Exterior Package
  • Illuminated Door-Sill Guards in Carbon Fiber
  • Illuminated Door-Sill Guards in Stainless Steel
  • LED Headlights in Black
  • LED Headlights with PDLS+
  • Lower Front Fascia Painted
  • Lower Rear Fascia Painted
  • Personalized Door-Sill Guards in Carbon Fiber
  • Personalized Door-Sill Guards in Stainless Steel
  • Porsche Dynamic Light System (PDLS)
  • Porsche Logo and 911 Model Designation Painted
  • Porsche Logo and Model Designation Painted
  • Rear Lid Intake Grille Slats Painted
  • Side Mirror Lower Trim Painted
  • Side Skirts Painted
  • SportDesign Exterior Mirrors in Carbon Fiber
  • SportDesign Front Fascia
  • SportDesign Side Mirrors
  • Sports Tailpipes in Black
  • Sports Tailpipes in Silver
  • Tinted Taillights
  • Window Triangle Trims in Carbon Fiber
  • Instrument Dials in Bordeaux Red
  • Instrument Dials in Guards Red
  • Instrument Dials in Luxor Beige
  • Instrument Dials in Racing Yellow
  • Instrument Dials in White
  • Seat Belts in Bordeaux Red
  • Seat Belts in Chalk
  • Seat Belts in Guards Red
  • Seat Belts in Luxor Beige
  • Seat Belts in Miami Blue
  • Seat Belts in Racing Yellow
  • Seat Belts in Silver Grey
  • Air Vent Slats Painted
  • Air Vent Slats in Leather
  • Air Vents Painted
  • Air Vents in Leather
  • Aluminum PDK Gear Selector
  • Carbon Fiber Floor Mats with Leather Edging
  • Climate Control Panel in Leather
  • Climate-Control Panel Painted
  • Customization Package PDK Gear Selector
  • Extended Leather Interior Package Dashboard
  • Extended Leather Interior Package Door Surfaces
  • Extended Leather Interior Package Rear
  • Floor Mats with Leather Edging
  • GT Sport Steering Wheel in Alcantara
  • GT Sport Steering Wheel in Alcantara with PDK
  • Gear Lever in Carbon Fiber
  • Inner Door-Sill Guards in Leather
  • Interior Package Painted
  • Interior Package Painted with Leather Interior
  • Interior Trim in Brushed Aluminum
  • Interior Trim in Brushed Aluminum with Leather Interior
  • Interior Trim in Carbon Fiber
  • Interior Trim in Carbon Fiber with Leather Interior
  • Interior Trim in Dark Mahogany
  • Interior Trim in Dark Mahogany with Leather Interior
  • Leather Interior Package
  • Leather Interior Package with Leather Interior
  • Manual Gear Lever in Mahogany
  • PDK Gear Selector in Carbon Fiber
  • PDK Gear Selector in Mahogany
  • Pedals and Footrest in Aluminum
  • Personalized Carbon Floor Mats with Leather Edging
  • Rear Center Tunnel in Leather with Decorative Stitching
  • Steering Column Casing in Leather
  • Sun Visors in Alcantara
  • Sun Visors in Leather
  • Transmission Tunnel in Leather
  • Contrast Stitching Interior Package
  • Customization Package Manual Gear Lever
  • Extended Contrast Stitching Interior Package
  • Porsche Ceramic Composite Brake (PCCB)
  • Premium Package Plus with Adaptive Sport Seats Plus
  • Premium Package Plus with Power Sport Seats
  • Premium Package with Adaptive Sport Seats Plus
  • Premium Package with Power Sport Seats
  • Sport Chrono Package
  • SportDesign Package
  • Adaptive Cruise Control (ACC)
  • Lane-Change Assist (LCA)
  • Agate Grey, Leather Seat Trim with Leather Interior
  • Black, Leather Seat Trim with Leather Interior
  • Black/Bordeaux Red, 2-Tone Leather Seat Trim
  • Black/Dark Silver, Leather Seat Trim with Sport-Tex Seat Centers
  • Black/Luxor Beige, 2-Tone Leather Seat Trim
  • Bordeaux Red, Special Color Leather Seat Trim
  • Colour to Sample, Leather Seat Trim in Color to Sample
  • Espresso, Natural Leather Seat Trim
  • Espresso/Cognac, 2-Tone Natural Leather Seat Trim
  • Graphite Blue, Special Color Leather Seat Trim
  • Graphite Blue/Chalk, 2-Tone Leather Seat Trim
  • Graphite Blue/Chalk, Leather Seat Trim with Sport-Tex Seat Centers
  • Saddle Brown, Leather Seat Trim with Leather Interior
  • Seat Centers in Contrasting Leather
  • 14-Way Power Sport Seats
  • 18-Way Adaptive Sport Seats Plus
  • 4-Way Sport Seats Plus
  • Front Seat Heating
  • Front Seat Ventilation
  • Transmission: 7-Speed Porsche Doppelkupplung (PDK)
  • Wheels Painted in Exterior Color
  • Wheels Painted in High-Gloss Black
  • Wheels Painted in Jet Black Metallic
  • Wheels Painted in Satin Black
  • Wheels Painted in Satin Platinum
  • Wheels: 20" Carrera Classic
  • Wheels: 20" Carrera Sport
  • Wheels: 20" RS Spyder Design
  • Wheels: 8.5" x 20" Front/11.5" x 20" Rear Carrera S
  • Wheels: 9" x 20" Front/11.5" x 20" Rear 911 Turbo
2019 BMW i8
Coupe AWD

Exterior Colors

  • Crystal White Pearl Metallic W/BMW I Frozen Blue
  • Crystal White Pearl Metallic W/Frozen Gray Accent
  • DONINGTON Grey
  • E-Copper W/Highlight Frozen Grey Metallic
  • SOPHISTO Gray Metallic W/BMW I Frozen Blue Accent
  • SOPHISTO Gray Metallic W/Frozen Gray Accent

Option Packages

  • BMW Laserlight
  • Tera World
  • Tera World Copper

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