On Monday December 9, the US government sold its remaining stake in General
Motors Co. (GM). While the automaker is doing well financially, it is also
making progress in terms of sustainability.
By most accounts the government bailout of the U.S. auto industry was a
success. This view is convincingly communicated in a new study by the Center for
Automotive Research (CAR) called ”The Effect on the U.S. Economy of the Successful Restructuring of
The U.S. government was repaid the $39.5 billion it lent to GM as part of the
2008-2009 auto bailout, which forced GM and its Chevrolet division into a
government-backed bankruptcy. According to the CAR study, in addition to saving
2.6 million jobs in 2009, the bailout preserved $284.4 billion in personal
income between 2009 and 2010. In less than five years GM and other American
automakers have become profitable and they have added more than 372,000 new
jobs. However, the bailout was not only an economic success, it bought GM time
to improve its environmentally destructive trajectory.
One of these improvements involves a new labeling system that Chevrolet is
now posting on its vehicles. The label summarize fuel-efficiency technologies
and environmental progress. This first-of-its-kind EcologicTM Label lets consumers see some of the environmental
features of the vehicle relating to manufacturing, driving and recycling. The
claims on these labels are independently audited by Two Tomorrows, a
third-party sustainability agency.
GM is now moving forward with the production of vehicles that have better
fuel efficiency and lower emissions. GM has also adopted manufacturing processes
that have a smaller footprint.
Fuel efficiency of US auto fleet
GM is at the forefront of the dawn of a more responsible American auto
industry. According to the EPA, from 2007 to 2012, U.S. fuel economy
values have increased by 16 percent. Between 2011 and 2012 there was a 1.4
mile per gallon (mpg) increase in fuel efficiency for the 2012 lineup of
American cars and trucks. In 2012 the average fuel economy among American
automakers increased to 23.8 mpg. This is among the largest annual improvements
since EPA began reporting on fuel economy. The average fuel economy of new
vehicles sold in August 2013 reached an all-time high of 24.9 miles per gallon.
That’s up almost five miles per gallon since researchers began tracking the
number in October, 2007.
Both projected and actual US fuel economy figures from the EPA show that
there has been a reversal
of the long-term trend towards worsening fuel efficiency. There was a rapid
increase in average fuel consumption from 1975 through 1981 and a slower
increase with an efficiency peak in 1987. This was followed by a gradual
decrease in fuel efficiency until 2004 when the average fuel economy numbers for
American cars was just 19.3 mpg. Since then there has been a steady increase in
fuel economy ratings.
GM is leading domestic automakers in making large gains in fuel efficiency.
GM now has 20 models that get 30 mpg hwy or better, including the car with the
best highway mileage of any gas engine in America, the 42 mpg-hwy Chevrolet
GM has improved its fuel economy ratings between 2009 and 2012. According to
EPA figures, in 2009 GM vehicles averaged only 19.9 mpg as of 2012 the average
mpg for GM vehicles rose to 21.4 mpg. Part of the reason GM is generating better
efficiency numbers is due to the fact that they are manufacturing less big
vehicles and more smaller fuel efficient cars including hybrids and fully
The overarching context for these improvements is the Obama administration’s
fuel efficiency standards which will require that automakers double their
economy ratings by 2025. The Corporate Average Fuel Economy or CAFE standards will raise industry-wide fuel economy to 54.5
mpg by 2025, (it should be noted that CAFE standards are not the same as mpg
ratings). As of 2012, GM got a CAFE fuel economy rating of 32.9 MPG for domestic
passenger cars and 23.5 for light trucks.
Vehicular carbon emissions
According to the EPA, 2012 cars and trucks continued to decrease their carbon
pollution. The research shows that vehicle emissions as measured by what is
known as the Eco Driving Index has also improved.
EPA data indicates that in 2009 the average CO2 vehicle emissions were 8
percent lower than in 2004 which had a rating of 461 grams per mile (g/mi). In
2012, EPA figures show that American auto makers reduced their CO2 emissions to
374 (g/mi). From 2007 to 2012, EPA estimates that CO2 emissions have decreased
by 13 percent.
In 2009 GM had an average carbon emissions rating of 447 (g/mi). In 2012 GM
saw its CO2 emissions decline to 418 (g/mi). GM is also a global biofuel leader
including ethanol which in comparison to gas, emits 21 percent less CO2.
Waste and recycling at GM
GM is also decreasing its waste through its landfill-free program. As
reported by GM, the
company boasts an industry-leading total of 105
facilities that recycle, reuse or convert to energy all waste from daily
operations. GM is recycling and reusing 90 percent of its manufacturing waste
worldwide and in the process the company generates about $1 billion in revenue
annually. GM has reduced its total waste 25 kilograms, or 55 pounds, per vehicle
Hybrid and electric vehicles
GM sees electrically driven vehicles as the best long-term solution for
energy-efficient transportation. GM is the leader in domestically produced
hybrid and electric vehicle components. GM produces their own batteries in the
largest and most technologically advanced battery development facility in the
U.S. They are the first major U.S. automaker to design and manufacture electric
motors for their hybrid and electric vehicles.
GM is also a leader in extended range electric with vehicles like the
Chevrolet Volt and Opel Ampera. The Chevrolet Volt has an estimated 94 MPGe
electric, and when using the gas engine it generates ratings of 35 mpg city, and
40 mpg hwy. The range for the Volt is 35 miles of electric driving. Once the
electric charge is depleted, a gas-powered engine generator provides an
additional 340 miles of range.
GM’s hybrid Silverado pickup has an EPA estimated 20 mpg city and 23 mpg hwy.
The Buick LaCrosse and Regal have what is known as eAssist technology which get
an EPA estimated 25 mpg 25 city and 36 hwy. The 2013 Chevrolet Malibu Eco also
uses eAssist and gets an EPA estimated 25 mpg 25 city and 37 hwy.
The new eAssist technology is an electrification solution that enhances fuel
efficiency up to 25 percent when paired with existing engines. The electric
motor recaptures energy and shuts off fuel during braking. To further increase
efficiency, it stops and restarts the engine in stop-and-go city driving. An
onboard lithium-ion battery provides an electric boost in certain conditions to
Hydrogen fuel cell vehicles
GM engineers are at the forefront of hydrogen fuel cell technology which have
no CO2 emissions. They have been working on FCVs for more than 16 years and they
are the country’s leading innovators in this technology of the future. Fuel
cells have 2.3 times the efficiency of conventional powertrains and take
around three minutes to refuel.
To date GM fuel cell vehicles (FCV) have driven more than 3 million miles as
part of their test fleet of 100 Chevrolet Equinox SUVs undergoing real-world testing by
families and commercial users.
accelerate the development of hydrogen fuel cells. GM is working on hydrogen
fuel cell powered vehicles with the military’s Tank Automotive Research, Development and Engineering Center (TARDEC).
In 2013, GM teamed up with Honda to bring affordable hydrogen-powered
vehicles onto the market by the end of the decade. GM hopes to have as many as
one million affordable FCVs by 2020.
In 2012, GM invested more than $7.3 billion in the research and development
of “next-generation” technologies. During 2011 and 2012 GM received more clean
energy patents than any other organization, according to the Clean Energy Patent
Growth Index of US patents.
The company continues to improve fuel economy and decrease mobile emissions
through advanced engine and transmission technology, next-generation batteries
and electric motors, and power electronics. They are also working on vehicles with better aerodynamics as well as reduced
weight and mass which makes them up to 15 percent lighter than comparable
vehicles on the road today.
In 2012 General Motors was among several recipients
that received $54 million in Energy Department grants aimed at improving the
energy efficiency of advanced manufacturing technologies. GM received $2.7
million to develop an integrated die-casting process for a thin-walled magnesium
application used to manufacture car doors. The manufacturing process is expected
to cut energy use by 50 percent. The reduced weight in the doors also will
improve fuel economy and reduce carbon emissions.
GM’s lineup of gasoline-powered vehicles are increasingly efficient due
technological innovations including direct fuel injection, active fuel
management, variable valve timing and turbocharging. They are also focusing on
tire construction to make their vehicles more efficient.
In 2013 GM began using a new refrigerant that has a global warming potential
(GWP) that is a tiny fraction of previous refrigerants. Developed in 2010 GM was
the first company to introduce a climate-friendly refrigerant to replace the
super greenhouse gas used in auto air conditioning. The new refrigerant, called
an HFO, has a global warming potential of just 4 compared to over 1,400 for HFC-134a. The new refrigerant
remains in the atmosphere for just 11 days, according to Honeywell, its
producer. Honeywell calculates that the low GWP and the short lifetime of its
HFO represents a 99.7 percent improvement over HFC-134a.
GM is also a biofuel leader and according to their own reports, they are
developing technologies that turn agricultural and municipal solid waste into
In 2012 General Motors installed an 8.15 MW solar array
on the rooftop of one of its Opel plants in Germany. The array at Rüsselsheim is
one of the largest solar installations in Europe with an area equivalent to 32
soccer fields. It generates about 7.3 million kWh per year of energy. This
represents a CO2 reduction of about 3,150 tons a year, equal to the amount of
carbon isolated annually. The latest installation, together with GM’s other
solar arrays in Kaiserslautern, Germany, and Zaragoza, Spain, will allow the
company to produce 19.1 million kWh of electricity a year which reduces CO2
emissions by 8,200 tons annually.
According to their 2013
Sustainability Report, by 2015 GM will have a solar output of 60 MW by 2015
and the company plans to have a renewable energy output of 125 MW by 2020.
GM also has a few LEED-certified buildings including an engine plant in
southern Brazil, equipped with numerous sustainability features including solar
energy and water recycling systems. Another innovative program harvests energy
from test benches its Powertrain Engineering Center in Turin, Italy. The
amount of energy harvested is equal to 300,000 kWh of energy.
Manufacturing facilities: energy and carbon
GM’s manufacturing technologies decrease the use of energy, resources and
materials. As reviewed in their 2013 Sustainability Report, GM is committed to
reducing energy and carbon intensity in their global manufacturing operations.
The EPA has recognized GM with its Energy Star partner of the year for Sustained
Excellence award and the company has a total of 54 facilities that meet the
Energy Star Challenge for industry.
According to Green Car Congress, in 2012, the company realized
energy-efficiency improvements of 2 percent over 2011, and similar decrements in
carbon emissions intensity. GM also reduced the amount of energy required to
build each vehicle by 7 percent since 2010. In 2012, GM’s energy intensity per
vehicle manufactured was 2.30 MWh per vehicle, down from 2.47 MWh/vehicle in
2010. The 2020 target is 1.97 MWh/vehicle.
GM’s carbon intensity per vehicle in 2012 was 0.88 metric tons CO2e, which is
down from 0.92 in 2010. The latest data shows that average total energy usage
for GM’s international operations is 1.14 MWh per vehicle, less than half the
industry average of 2.37 MWh per vehicle.
GM’s energy management and renewable energy programs have helped reduce
carbon intensity of manufacturing by 5.3 percent since 2010 and they are
targeting a 20 percent reduction by 2020. The 2020 target is 0.75
According to GM’s 2012 Sustainability Report, by 2017 the company expects to
double models with a rating of 40 mpg (highway) or better, further reduce the
energy used in production as well as diminish the environmental impacts from its
buildings and vehicle operations.
By 2017, GM has pledged to have 500,000 vehicles on the road in the US with some form of
electrification and to reduce the average CO2 tailpipe emissions of its US fleet
by 15 percent. GM subsidiary Opel estimates will reduce the average carbon
tailpipe emissions by 27 percent by 2020.
GM will also continue to reduce vehicle mass and aggressively invest in
advanced materials, such as high-strength steel, carbon fiber and aluminum as
well as an industry-first lightweight aluminum welding technology. Other ongoing
efficiency oriented innovation includes downsizing, turbocharging, direct
injection, variable valve timing and cylinder deactivation.
According to GM’s 2012 Sustainability Report, “The rollout of these
technologies in new GM US models between 2011 and 2016 is expected to improve
the fuel economy of our fleet by more than 18 percent.”
Five years ago GM was on the brink of closing its doors forever, now they are
making more fuel efficient vehicles with less emissions. They have also reduced the
impacts of their manufacturing processes, minimized waste and decreased their
use of energy and other materials. As suggested by GM’s commitments for the
future, this is only the beginning of a sustainability journey that will help
lead America into the new automotive reality.
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