Use these new MPG estimates to compare to 2008 and later model year vehicles. Click to Compare Old and New MPG.
Carbon footprint measures a vehicle’s impact on climate change in tons of carbon dioxide (CO2) emitted annually. The scale under each rating shows how the vehicle’s CO2 emissions compare to other vehicles. Click to learn more.
The Air Pollution score and Carbon Footprint measure different types of vehicle emissions. Air pollutants harm human health and/or cause smog. Carbon Footprint measures greenhouse gas emissions (primarily CO2) that impact climate change.
The EPA air pollution score rates cars and light trucks based on how much smog-forming air pollution they emit. Greenhouse gas emissions which may contribute to climate change are not included. Click for more info.

2009 Vehicles by Porsche

Sorted by MPG (city), Click on column headings to resort
Select up to 4 models to compare
Carbon Footprint
(tons/yr of CO2) Info
Air Pollution
ScoreInfo
All states except
CA and NE states
arrow   
New EPA
MPG
  city  hwy
Porsche Boxster 6 cyl, 2.9 L, Automatic 7-spd, Premium
Porsche Boxster
7.7
NA
20
city
29
hwy
$1820
Porsche Cayman 6 cyl, 2.9 L, Automatic 7-spd, Premium
Porsche Cayman
7.7
NA
20
city
29
hwy
$1820
Porsche Boxster S 6 cyl, 3.4 L, Automatic 7-spd, Premium
Porsche Boxster S
8.0
NA
20
city
29
hwy
$1899
Porsche Cayman S 6 cyl, 3.4 L, Automatic 7-spd, Premium
Porsche Cayman S
8.0
NA
20
city
29
hwy
$1899
Porsche Carrera 2 Cabriolet 6 cyl, 3.6 L, Automatic 7-spd, Premium
Porsche Carrera 2 Cabriolet
8.3
NA
19
city
27
hwy
$1986
Porsche Carrera 2 Coupe 6 cyl, 3.6 L, Automatic 7-spd, Premium
Porsche Carrera 2 Coupe
8.3
NA
19
city
27
hwy
$1986
Porsche Boxster 6 cyl, 2.9 L, Manual 6-spd, Premium
Porsche Boxster
8.3
NA
19
city
27
hwy
$1986
Porsche Cayman 6 cyl, 2.9 L, Manual 6-spd, Premium
Porsche Cayman
8.3
NA
19
city
27
hwy
$1986
Porsche Carrera 2 S Cabriolet 6 cyl, 3.8 L, Automatic 7-spd, Premium
Porsche Carrera 2 S Cabriolet
8.3
NA
19
city
26
hwy
$1986
Porsche Carrera 2 S Coupe 6 cyl, 3.8 L, Automatic 7-spd, Premium
Porsche Carrera 2 S Coupe
8.3
NA
19
city
26
hwy
$1986
Porsche Boxster S 6 cyl, 3.4 L, Manual 6-spd, Premium
Porsche Boxster S
8.3
NA
19
city
26
hwy
$1986
Porsche Cayman S 6 cyl, 3.4 L, Manual 6-spd, Premium
Porsche Cayman S
8.3
NA
19
city
26
hwy
$1986
Porsche Carrera 4 S Cabriolet 6 cyl, 3.8 L, Automatic 7-spd, Premium
Porsche Carrera 4 S Cabriolet
8.7
NA
18
city
27
hwy
$2078
Porsche Carrera 4 S Targa 6 cyl, 3.8 L, Automatic 7-spd, Premium
Porsche Carrera 4 S Targa
8.7
NA
18
city
27
hwy
$2078
Porsche Carrera 4 Cabriolet 6 cyl, 3.6 L, Automatic 7-spd, Premium
Porsche Carrera 4 Cabriolet
8.7
NA
18
city
26
hwy
$2078
Porsche Carrera 4 Coupe 6 cyl, 3.6 L, Automatic 7-spd, Premium
Porsche Carrera 4 Coupe
8.7
NA
18
city
26
hwy
$2078
Porsche Carrera 4 S Coupe 6 cyl, 3.8 L, Automatic 7-spd, Premium
Porsche Carrera 4 S Coupe
8.7
NA
18
city
26
hwy
$2078
Porsche Carrera 4 Targa 6 cyl, 3.6 L, Automatic 7-spd, Premium
Porsche Carrera 4 Targa
8.7
NA
18
city
26
hwy
$2078
Porsche Carrera 2 Cabriolet 6 cyl, 3.6 L, Manual 6-spd, Premium
Porsche Carrera 2 Cabriolet
8.7
score = 06
18
city
25
hwy
$2078
Porsche Carrera 2 Coupe 6 cyl, 3.6 L, Manual 6-spd, Premium
Porsche Carrera 2 Coupe
8.7
score = 06
18
city
25
hwy
$2078
Porsche Carrera 2 S Cabriolet 6 cyl, 3.8 L, Manual 6-spd, Premium
Porsche Carrera 2 S Cabriolet
8.7
score = 06
18
city
25
hwy
$2078
Porsche Carrera 2 S Coupe 6 cyl, 3.8 L, Manual 6-spd, Premium
Porsche Carrera 2 S Coupe
8.7
score = 06
18
city
25
hwy
$2078
Porsche Carrera 4 Cabriolet 6 cyl, 3.6 L, Manual 6-spd, Premium
Porsche Carrera 4 Cabriolet
8.7
score = 06
18
city
25
hwy
$2078
Porsche Carrera 4 Coupe 6 cyl, 3.6 L, Manual 6-spd, Premium
Porsche Carrera 4 Coupe
8.7
score = 06
18
city
25
hwy
$2078
Porsche Carrera 4 Targa 6 cyl, 3.6 L, Manual 6-spd, Premium
Porsche Carrera 4 Targa
8.7
score = 06
18
city
25
hwy
$2078
Porsche Carrera 4 S Cabriolet 6 cyl, 3.8 L, Manual 6-spd, Premium
Porsche Carrera 4 S Cabriolet
9.2
score = 06
18
city
25
hwy
$2183
Porsche Carrera 4 S Coupe 6 cyl, 3.8 L, Manual 6-spd, Premium
Porsche Carrera 4 S Coupe
9.2
score = 06
18
city
25
hwy
$2183
Porsche Carrera 4 S Targa 6 cyl, 3.8 L, Manual 6-spd, Premium
Porsche Carrera 4 S Targa
9.2
score = 06
18
city
25
hwy
$2183
Porsche 911 GT2 6 cyl, 3.6 L, Manual 6-spd, Premium
Porsche 911 GT2
9.6
NA
16
city
23
hwy
$2296
Porsche 911 Turbo 6 cyl, 3.6 L, Manual 6-spd, Premium
Porsche 911 Turbo
10.2
NA
16
city
23
hwy
$2427
Porsche 911 Turbo Cabriolet 6 cyl, 3.6 L, Manual 6-spd, Premium
Porsche 911 Turbo Cabriolet
10.2
NA
15
city
24
hwy
$2427
Porsche 911 Turbo 6 cyl, 3.6 L, Automatic 5-spd, Premium
Porsche 911 Turbo
10.2
NA
15
city
23
hwy
$2427
Porsche 911 Turbo Cabriolet 6 cyl, 3.6 L, Automatic 5-spd, Premium
Porsche 911 Turbo Cabriolet
10.2
NA
15
city
23
hwy
$2427
Porsche Cayenne 6 cyl, 3.6 L, Manual 6-spd, Premium
Porsche Cayenne
11.4
score = 06
14
city
20
hwy
$2728
Porsche Cayenne 6 cyl, 3.6 L, Automatic 6-spd, Premium
Porsche Cayenne
11.4
score = 06
14
city
20
hwy
$2728
Porsche Cayenne S 8 cyl, 4.8 L, Automatic 6-spd, Premium
Porsche Cayenne S
12.2
score = 06
13
city
19
hwy
$2911
Porsche Cayenne GTS 8 cyl, 4.8 L, Automatic 6-spd, Premium
Porsche Cayenne GTS
12.2
score = 06
13
city
18
hwy
$2911
Porsche Cayenne Turbo 8 cyl, 4.8 L, Automatic 6-spd, Premium
Porsche Cayenne Turbo
13.1
score = 06
12
city
19
hwy
$3117
Porsche Cayenne Turbo S 8 cyl, 4.8 L, Automatic 6-spd, Premium
Porsche Cayenne Turbo S
13.1
score = 06
12
city
19
hwy
$3117
Porsche Cayenne GTS 8 cyl, 4.8 L, Manual 6-spd, Premium
Porsche Cayenne GTS
14.1
score = 06
11
city
17
hwy
$3357
 

* Based on 45% highway driving, 55% city driving, 15000 annual miles and the price of fuel used by the vehicle. You may personalize these values to reflect the price of fuel in your area and your own driving patterns.

The carbon footprint measures greenhouse gas emissions expressed in CO2 equivalents. The estimates presented here are "full fuel-cycle estimates" and include the three major greenhouse gases emitted by motor vehicles: carbon dioxide, nitrous oxide, and methane. Full fuel-cycle estimates consider all steps in the use of a fuel, from production and refining to distribution and final use. Vehicle manufacture is excluded. (U.S. Department of Energy, GREET Model 1.7, Argonne National Laboratory)