Porsche 911 vs Audi R8 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.

Expert Reviews Reviews from CarGurus experts.

2021 Porsche 911
Carrera 4 Cabriolet AWD
Josh Jacquot Preview:

Entering its second year in the 992 generation, Porsche’s iconic 911 remains one of the most versatile and daily drivable sports cars ever made. Its trims and drive configurations enco...

2020 Audi R8
quattro V10 Coupe AWD
Andrew Newton Preview:

The Audi R8 debuted in 2005, presenting buyers with a German alternative to the Porsche 911. The biggest changes came with the second-generation redesign in 2015. For 2020, the model g...


2021 Porsche 911
Carrera 4 Cabriolet AWD
2020 Audi R8
quattro V10 Coupe AWD
Powertrain 8-Speed Dual Clutch 7-Speed Dual Clutch
Fuel Economy, City
13 MPG
Fuel Economy, Highway
20 MPG
Fuel Tank Volume 17.6 gal 21.9 gal
Fuel Type
379 hp @ 6,500 RPM
562 hp @ 7,800 RPM
331 lb-ft @ 1,950 RPM
406 lb-ft @ 6,500 RPM
6 cylinders
10 cylinders
Compression Ratio
3,000 cc
5,200 cc
Bore x Stroke
3.58 in x 3.01 in
3.33 in x 3.65 in
ABS Brakes Standard Standard
Driver Airbag Standard Standard
Passenger Airbag Standard Standard
Front Side Airbags -- Standard
Curtain Airbags -- Standard
NHTSA Crash Test Results
Comfort and Convenience
Leather Seats -- Standard
Air Conditioning Standard Standard
CD Player -- Standard
Radio Standard Standard
Power Windows Standard Standard
Power Door Locks Standard Standard
Driver Power Seats Standard Standard
Passenger Power Seats Standard Standard
Maximum Seating 4 seats 2 seats
Front Legroom -- 40.5 in
Back Legroom -- --
Payload and Towing
Cargo Volume 4.6 cu ft 8 cu ft
Maximum Payload 883 lbs 551 lbs
Length 177.9 in 174.3 in
Width 79.7 in 80.2 in
Height 51.1 in 48.8 in
Wheelbase 96.5 in 104.4 in

Available Options

2021 Porsche 911
Carrera 4 Cabriolet AWD
2020 Audi R8
quattro V10 Coupe AWD

Exterior Colors

  • Ara Blue Crystal Effect
  • Daytona Gray Pearl Effect
  • FLORETT Silver Metallic
  • Ibis White
  • KEMORA Gray Metallic
  • Mythos Black Metallic
  • Suzuka Gray Metallic
  • Tango Red Metallic
  • Vegas Yellow

Option Packages

  • Contrast Stitching
  • Full Leather Package
  • 20" Wheel Package
  • Audi Guard All-Weather Floor Mats
  • Carbon Exterior Package
  • Carbon Interior Package
  • Ceramic Brake Package
  • Diamond Stitch Full Leather Package
  • Led Headlights W/Audi Laser Light
  • Red Brake Calipers For Steel Brakes
  • Dynamic Steering - Speed Dependent

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