How to Buy Green
GreenerCars.com will help you select the vehicle that is most friendly
to the planet while meeting your transportation needs. Based on official
emissions and fuel-economy tests, and other specifications reported
by auto manufacturers, we calculate a Green Score for each car, minivan,
pickup, and SUV on the market. The Green Score falls on a scale of
zero to 100. A higher score implies a greener car, meaning a vehicle
having a lower environmental impact.
Green Scores and Class Rankings
In our tables, vehicles are grouped together
by class (that is, the type or body style, such as midsize car,
minivan, standard pickup, and so on). To summarize our ratings
and make it easy to find the top-rated vehicles in each class,
we use a five-tier class ranking—Superior,
Above Average, Average, Below Average, and Inferior—depending
on where a model falls within its class. No vehicle gets a Superior
rating if its Green Score is worse than the overall average of all
vehicles offered this model year, even if it ranks among the best
in its class. Look for models that are ranked Superior or Above Average
to easily find those that have the greenest scores.
To make it easy to find the most planet-friendly
new cars and trucks available this year, our Highlights of the
Model Year page identifies not only the overall Greenest Vehicles
of 2013, but also the models with the highest Green Scores in each
class, "The Best of 2013." The
easiest way to buy green is to select a vehicle from this "Best
of 2013" list.
If you'd like to see more than just the models
in the "Best
of 2013" list, subscribe to ACEEE's Green Book® Online to
get details for every make and model now on the market (as well as
all model year 2000 through 2013 vehicles). Our online database lists
each vehicle's emission standard, fuel economy, fuel costs, health
effects, CO2 emissions, and overall environmental impact, along with
its Green Score and Class Ranking. If you have identified a set of
models to consider, build a comparison list in ACEEE's Green Book® Online
to comparison shop with the environment in mind.
For most consumers, the Green Score and Class
Ranking provide a good indication of a vehicle's environmental
performance. Full details on how our Green Scores are calculated
are found in "Rating
the Environmental Impacts of Motor Vehicles: ACEEE's Green Book® Methodology," which can be downloaded for free from ACEEE's publications site. In general, a vehicle is
greener if it is cleaner (having lower pollution) or more fuel efficient
(resulting in lower energy consumption and CO2 emissions).
Different Versions of a Model Have Different Green Scores
all models come in different configurations, meaning different choices
of engine, transmission, and other major options. A model may also
be available in versions that meet different emissions standards
or run on alternative fuels.
To match a model in the showroom with a listing
in ACEEE's Green Book® Online, first match its engine size
and transmission type (automatic, manual, 4wd, etc.), followed
by the city and highway fuel economy ratings found on the vehicle
window label. Lastly, examine the window sticker or underhood ID
to match the vehicle's emission standard.
How to buy green
Sorting out Standards
EPA Fuel Economy Estimation (Cars and Light Trucks)
Why Buy Green?
Automobiles and the environment