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The Greenest Vehicles

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
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.

One comment

  1. says:

    A green vehicle is a road motor vehicle that produces less harmful impacts to the environment than comparable conventional internal combustion engine vehicles running on gasoline or diesel , or one that uses certain alternative fuels .

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