The American Council for an Energy Efficient Economy (ACEEE) has released its annual list of the greenest cars of the year. The Toyota Prius C subcompact hatchback received the top billing. It was closely followed by the Honda Fit EV. The gas-burning Toyota Prius C is considered more “green” than the all-electric plug-in Honda Fit EV due to the formula used. The ACEEE used a simple formula:
GreenScore = a x e –EDX/c / (1+EDX/c)b
The council considers emissions, both smog-forming ones and greenhouse gases, produced by the vehicle, as well as by utility companies whose electricity charges the plug-in vehicles. They also examined the energy required to build the vehicle and the environmental impact of disposing of it at the end of its life, as well as fuel-economy ratings issued by the Environmental Protection Agency. Toss in a little eye of newt and presto – your winner, the Prius C, which is rated by the EPA at 53mpg in urban and 46mpg in highway driving.
Being a purely electric vehicle, the Fit EV naturally has no mpg. It has instead miles per kilowatt-hour of electricity expended. The EPA says the Fit EV travels 3.9 miles per kilowatt-hour in the city and 3.1mpkWh on the highway. A judiciously driven Fit EV can travel for roughly 80 miles on a single charge.
Next on the list is a three-way tie between the Toyota Prius (the plug-in hybrid version of the Prius), the Prius PHV, and the Honda Civic Hybrid.
Included on the ACEEE list of greenest cars and trucks are the year’s top-rated subcompact, compact, midsize, and large cars, as well as minivans, vans, pickups, and sport utility vehicles.
|Make and Model||Specifications||Emission Standard a||MPG:
|TOYOTA PRIUS C||1.5L 4, auto||SULEV II / Bin 3||53||46||58|
|HONDA FIT b||Electric (Li-ion battery)||ZEV||3.9||3.1||57|
|TOYOTA PRIUS||1.8L 4, auto||PZEV / Bin 3||51||48||55|
|TOYOTA PRIUS PLUG-IN HYBRID c||Electric (Li-ion bat.) / 1.8L 4, auto CVT||PZEV / Bin 3||3.9 / 51||3.0 / 49||55|
|HONDA CIVIC HYBRID||1.5L 4, auto||PZEV / Bin 2||44||44||55|
|HONDA INSIGHT||1.3L 4, auto||Bin 3||41||44||54|
|VOLKSWAGEN JETTA HYBRID||1.4L 4, auto||PZEV / Bin 3||42||48||53|
|MERCEDES-BENZ SMART FORTWO CONVERTIBLE / COUPE||1.0L 3, manual [P]||ULEV II / Bin 5||34||38||53|
|SCION IQ||1.3L 4, auto||ULEV II / Bin 5||36||37||53|
|FORD FOCUS b||Electric (Li-ion bat.)||ZEV / Bin 1||3.3||2.9||52|
|TOYOTA PRIUS V||1.8L 4, auto||SULEV II / Bin 3||44||40||52|
|FORD FUSION HYBRID / C-MAX HYBRID||2.0L 4, auto||Bin 3||47||47||51|
|[P] denotes premium gasoline.”auto CVT” denotes continuously variable automatic transmission.a A listing with two emission standards (e.g., Tier 2 bin 2/ PZEV) denotes a single vehicle carrying both a Federal
and a California emission certification. Green Scores for such listings reflect the cleaner of the two certifications.b Fuel economy for electric vehicles is provided in miles per kilowatt-hour.c Fuel economy for plug-in hybrids is provided in miles per gallon for gasoline operation and in miles per kilowatt-hour for electric operation.