Audi R8 vs. Porsche 911

Mythos Black Metallic
VS
Carmine Red

Key Specs

MSRP

MSRP
$138,700 - $177,100
Not Available

Expert Rating

Expert Rating
Not Available

Owner Reviews

Owner Reviews
4.88 / 5
8 Reviews

Horsepower

Horsepower
532 hp
540 hp

Engine Type

Engine Type
5.2L FSI V10 DOHC
Twin

Interior Features

Sun Roof

Sun Roof
Not Available
Optional

Keyless Entry

Keyless Entry
Not Available
Optional

Heated Steering Wheel

Heated Steering Wheel
Not Available
Optional

Steering Wheel Controls

Steering Wheel Controls
Not Available
Optional

Premium Sound System

Premium Sound System
Optional
Optional

Front Leg Room

Front Leg Room
40.9 in.
Not Available

Front Head Room

Front Head Room
38.5 in.
Not Available

Passengers

Passengers
2
4

Power Driver Seat

Power Driver Seat
Optional
Optional

Power Passenger Seat

Power Passenger Seat
Optional
Optional

Heated Front Seats

Heated Front Seats
Not Available
Optional

Cooled Front Seats

Cooled Front Seats
Not Available
Optional

Seat Memory

Seat Memory
Not Available
Optional

Driver Lumbar

Driver Lumbar
Optional
Optional

Exterior Features

Power Folding Mirror

Power Folding Mirror
Not Available
Optional

Tire Width

Tire Width

Wheelbase

Wheelbase
104.4 in.
96.5 in.

Turning Radius

Turning Radius
36.7 ft.
34.8 ft.

Length

Length
174.3 in.
177.4 in.

Width

Width
76.4 in.
74 in.

Mechanical Specs

Weight

Weight
3505 - 3957 .lbs
3516 - 3671 .lbs

Horsepower

Horsepower
532 hp
540 hp

Torque

Torque
398 ft. lbs.
486 ft. lbs.

Performance Tires

Performance Tires
Optional
Not Available

Fuel Capacity

Fuel Capacity
21.1 - 21.9 gal.
17.9 gal.

Combined

Combined
7 - 24 mpg
10 - 12 mpg

City

City
14 mpg
19 mpg

Highway

Highway
22 - 25 mpg
24 mpg

Safety Features

Adaptive Cruise Control

Adaptive Cruise Control
Not Available
Optional

Blind Spot Monitor

Blind Spot Monitor
Not Available
Optional

Tech Specs

Vehicle Name

Vehicle Name
Audi R8 Coupe - Audi R8 Spyder
Porsche 911

Body Style

Body Style
Coupe, quattro Coupe, quattro Spyder
Cabriolet - Coupe

Drivetrain

Drivetrain
All Wheel Drive - Rear Wheel Drive
All Wheel Drive

EPA Classification

EPA Classification
Two-Seaters
Minicompact Cars

Passenger Capacity

Passenger Capacity
2
4

Base Curb Weight

Base Curb Weight
3505 - 3957 lbs.
3516 - 3671 lbs.

Fuel Economy Est-Combined

Fuel Economy Est-Combined
17 - 18 mpg.
21 mpg.

EPA Fuel Economy Est - City

EPA Fuel Economy Est - City
14 mpg.
19 mpg.

EPA Fuel Economy Est - Hwy

EPA Fuel Economy Est - Hwy
22 - 25 mpg.
24 mpg.

Engine Type

Engine Type
Premium Unleaded V-10
Twin Turbo Premium Unleaded H-6

Displacement

Displacement
5.2 L/318
3.8 L/232

Fuel System

Fuel System
Port/Direct Injection
Gasoline Direct Injection

Trans Type

Trans Type
7
7

Trans Description Cont.

Trans Description Cont.
Auto-Shift Manual w/OD
Auto-Shift Manual w/OD

First Gear Ratio (:1)

First Gear Ratio (:1)
3.13
3.91

Second Gear Ratio (:1)

Second Gear Ratio (:1)
2.59
2.29

Third Gear Ratio (:1)

Third Gear Ratio (:1)
1.88
1.58

Fourth Gear Ratio (:1)

Fourth Gear Ratio (:1)
1.14
1.18

Fifth Gear Ratio (:1)

Fifth Gear Ratio (:1)
0.90
0.94

Sixth Gear Ratio (:1)

Sixth Gear Ratio (:1)
0.88
0.79

Reverse Ratio (:1)

Reverse Ratio (:1)
2.65
3.54

Final Drive Axle Ratio (:1)

Final Drive Axle Ratio (:1)
3.59
3.44

Cold Cranking Amps @ 0° F (Primary)

Cold Cranking Amps @ 0° F (Primary)
420
520

Tons/yr of CO2 Emissions @ 15K mi/year

Tons/yr of CO2 Emissions @ 15K mi/year
9.8 - 10.4
8.4

Maximum Alternator Capacity (amps)

Maximum Alternator Capacity (amps)
210
120

Suspension Type - Front

Suspension Type - Front
Double Wishbone
Strut

Suspension Type - Rear

Suspension Type - Rear
Double Wishbone
Multi-Link

Suspension Type - Front (Cont.)

Suspension Type - Front (Cont.)
Double Wishbone
Strut

Suspension Type - Rear (Cont.)

Suspension Type - Rear (Cont.)
Double Wishbone
Multi-Link

Front Tire Size

Front Tire Size
P245/30YR20 - P245/35YR19
P245/35YR20

Rear Tire Size

Rear Tire Size
P295/35YR19 - P305/30YR20
P305/30YR20

Front Wheel Size

Front Wheel Size
19 X 8.5 - 20 X 8.5 in.
20 X 9 in.

Rear Wheel Size

Rear Wheel Size
19 X 11 - 20 X 11 in.
20 X 11.5 - 20 X 12 in.

Front Wheel Material

Front Wheel Material
Forged Aluminum
Forged Aluminum

Rear Wheel Material

Rear Wheel Material
Forged Aluminum
Forged Aluminum

Steering Type

Steering Type
Rack-Pinion
Rack-Pinion

Turning Diameter - Curb to Curb

Turning Diameter - Curb to Curb
36.7 ft.
34.8 ft.

Brake Type

Brake Type
4-Wheel Disc
4-Wheel Disc

Brake ABS System

Brake ABS System
4-Wheel
4-Wheel

Disc - Front

Disc - Front
Yes
Yes

Disc - Rear

Disc - Rear
Yes
Yes

Front Brake Rotor Diam x Thickness

Front Brake Rotor Diam x Thickness
14.4 - 15 in.
15 - 16.1 in.

Rear Brake Rotor Diam x Thickness

Rear Brake Rotor Diam x Thickness
14 in.
15 - 15.4 in.

Fuel Tank Capacity, Approx

Fuel Tank Capacity, Approx
21.1 - 21.9 gal.
17.9 gal.

Front Head Room

Front Head Room
38.5 in.
Not Available

Front Shoulder Room

Front Shoulder Room
55.1 in.
Not Available

Wheelbase

Wheelbase
104.4 in.
96.5 in.

Length, Overall

Length, Overall
174.3 in.
177.4 in.

Width, Max w/o mirrors

Width, Max w/o mirrors
76.4 in.
74 in.

Height, Overall

Height, Overall
48.8 - 49 in.
51 in.

Track Width, Front

Track Width, Front
64.5 in.
60.7 in.

Track Width, Rear

Track Width, Rear
63 in.
62.6 in.

Seventh Gear Ratio (:1)

Seventh Gear Ratio (:1)
0.65
0.62

Front Leg Room

Front Leg Room
40.9 in.
Not Available

Model Group

Model Group
R8
911

Vehicle Segment

Vehicle Segment
Luxury Sport
Luxury Sport

Vehicle Type

Vehicle Type
Convertible - Coupe
Convertible - Coupe

Engine Displacement Units

Engine Displacement Units
5.2
3.8

Engine Camshaft

Engine Camshaft
DOHC
DOHC

Engine Block Type

Engine Block Type
aluminum
aluminum

Engine Cylinder Count

Engine Cylinder Count
10
6

Engine Valve Count

Engine Valve Count
4
4