Sorted by Combined MPG. Click on column headings to resort the table.
Vehicle Name
Energy Impact Score
Greenhouse Gas Emissions (Tailpipe)
2013 Porsche Boxster 2.7 L, 6 cyl, Auto(AM-S7), Premium Gasoline
12.7 barrels per year
349
grams of CO2 per mile
2012 Porsche Panamera S Hybrid 3.0 L, 6 cyl, Automatic 8-spd, Premium Gasoline
13.2 barrels per year
355
grams of CO2 per mile
2013 Porsche Panamera S Hybrid 3.0 L, 6 cyl, Automatic 8-spd, Premium Gasoline
13.2 barrels per year
364
grams of CO2 per mile
2013 Porsche Boxster S 3.4 L, 6 cyl, Auto(AM-S7), Premium Gasoline
13.7 barrels per year
370
grams of CO2 per mile
2013 Porsche Boxster 2.7 L, 6 cyl, Manual 6-spd, Premium Gasoline
13.7 barrels per year
374
grams of CO2 per mile
2012 Porsche Boxster 2.9 L, 6 cyl, Automatic 7-spd, Premium Gasoline
13.7 barrels per year
370
grams of CO2 per mile
2012 Porsche Cayman 2.9 L, 6 cyl, Automatic 7-spd, Premium Gasoline
13.7 barrels per year
370
grams of CO2 per mile
2012 Porsche Boxster S 3.4 L, 6 cyl, Automatic 7-spd, Premium Gasoline
14.3 barrels per year
386
grams of CO2 per mile
2012 Porsche Boxster Spyder 3.4 L, 6 cyl, Automatic 7-spd, Premium Gasoline
14.3 barrels per year
386
grams of CO2 per mile
2012 Porsche Cayman R 3.4 L, 6 cyl, Automatic 7-spd, Premium Gasoline
14.3 barrels per year
386
grams of CO2 per mile
2012 Porsche Cayman S 3.4 L, 6 cyl, Automatic 7-spd, Premium Gasoline
14.3 barrels per year
386
grams of CO2 per mile
2012 Porsche New 911 Carrera 3.4 L, 6 cyl, Auto(AM-S7), Premium Gasoline
14.3 barrels per year
386
grams of CO2 per mile
2012 Porsche New 911 Carrera Cabriolet 3.4 L, 6 cyl, Auto(AM-S7), Premium Gasoline
14.3 barrels per year
386
grams of CO2 per mile
2013 Porsche 911 Carrera 3.4 L, 6 cyl, Auto(AM-S7), Premium Gasoline
14.3 barrels per year
384
grams of CO2 per mile
2013 Porsche 911 Carrera 4 3.4 L, 6 cyl, Auto(AM-S7), Premium Gasoline
14.3 barrels per year
389
grams of CO2 per mile
2013 Porsche 911 Carrera Cabriolet 3.4 L, 6 cyl, Auto(AM-S7), Premium Gasoline
14.3 barrels per year
384
grams of CO2 per mile
2013 Porsche Boxster S 3.4 L, 6 cyl, Manual 6-spd, Premium Gasoline
14.3 barrels per year
395
grams of CO2 per mile
2013 Porsche Cayenne Diesel 3.0 L, 6 cyl, Automatic (S8), Diesel
16.6 barrels per year
449
grams of CO2 per mile
2013 Porsche 911 Carrera 4 Cabriolet 3.4 L, 6 cyl, Auto(AM-S7), Premium Gasoline
15.0 barrels per year
397
grams of CO2 per mile
2012 Porsche 911 Carrera 3.6 L, 6 cyl, Automatic 7-spd, Premium Gasoline
15.0 barrels per year
404
grams of CO2 per mile
2012 Porsche Boxster 2.9 L, 6 cyl, Manual 6-spd, Premium Gasoline
15.0 barrels per year
404
grams of CO2 per mile
2012 Porsche Boxster Spyder 3.4 L, 6 cyl, Manual 6-spd, Premium Gasoline
15.0 barrels per year
404
grams of CO2 per mile
2012 Porsche Cayman 2.9 L, 6 cyl, Manual 6-spd, Premium Gasoline
15.0 barrels per year
404
grams of CO2 per mile
2012 Porsche Cayman R 3.4 L, 6 cyl, Manual 6-spd, Premium Gasoline
15.0 barrels per year
404
grams of CO2 per mile
2012 Porsche New 911 Carrera 3.4 L, 6 cyl, Manual 7-spd, Premium Gasoline
15.0 barrels per year
404
grams of CO2 per mile