Section 2: The Great Carbon Myth Uncovered
Introduction
When people talk about cars, they often ignore what goes into the tank, and what comes out of the tailpipe. This section is about carbon. Not the number on a slide. The full path: where it comes from, how it gets into the air, and what the car does about it.
Burn something and you make carbon dioxide. Wood. Coal. Kerosene. Diesel. Gasoline. A gallon of gasoline, burned, produces about 19.6 pounds of carbon dioxide, about 8.9 kilograms. That is the tailpipe. It is not the whole gallon. Getting the oil out of the ground, through a refinery, and to the station adds on the order of 5 more pounds before the engine starts. [1]
Carbon dioxide is measured. Mauna Loa was about 315 parts per million in 1958, near the year I was born. The global average in late 2026 is about 428 parts per million. That is a rise of about 113 points, or about 36 percent, not 26 percent. The 26 percent figure divides the rise by the new number instead of the old one. [2]
A 36 percent rise in the gas is not a 36 percent rise in the warming. The heat-trapping effect of carbon dioxide is logarithmic. Each new part per million adds less than the one before it. Less is not none. The planet has already warmed about 1.3 degrees Celsius since the late 1800s, and the curve is not finished.
Methane, CH4, is the other one in the pot. Over 20 years a ton of methane traps on the order of 80 times as much heat as a ton of carbon dioxide. Over 100 years the factor is about 30, because methane does not stay in the air as long. Rising methane is a near-term problem on top of the carbon dioxide. [3]
Planting trees helps. It does not retire the short-term problem. The gasoline burned in a year is a pulse. A sapling is a slow sponge. Both can be true.
Where the Gallon Comes From
Gasoline does not appear in the tank under the station. It starts as crude oil. Drilled, shipped, refined, trucked. Each step burns fuel.
The U.S. Environmental Protection Agency puts combustion at 8,887 grams of carbon dioxide per gallon, which is 19.6 pounds. Argonne’s GREET model is the standard account of the upstream piece, the extraction and refining and delivery. That upstream piece is real. It is not a second full gallon. [1]
An EV Cuts the Emissions. It Does Not Cut Them Fivefold.
The critic’s line is that an electric vehicle (EV) only moves the emissions to the power plant. The move is real. The reduction is also real. “Fivefold” is not.
A gasoline car at 25 miles per gallon burns 4 gallons in 100 miles. That is about 78 pounds of carbon dioxide at the tailpipe, before the upstream oil.
An EV at 30 kilowatt-hours per 100 miles, on a U.S. grid around 0.8 pounds of carbon dioxide per kilowatt-hour, is about 24 pounds for the same 100 miles. That is roughly a threefold cut against the tailpipe, not fivefold, and not 0 to 10 pounds.
On a coal-heavy hour the EV’s number rises. On a solar-heavy hour it falls. Over a year, on the U.S. mix, the EV is still well ahead of the gasoline car. On a lifecycle basis the International Energy Agency puts a medium electric car more than 55 percent below a medium gasoline car, battery included. That is about half, a bit better. It is not a fifth. [4]
The grid is cleaner than it was in 2005. It is not cleaner every single year. In 2025 U.S. power-sector carbon dioxide rose about 4 percent, because electricity demand rose and coal generation rose 13 percent, even while solar generation rose 34 percent. Carbon-free power, nuclear plus renewables, was about 42 percent of utility-scale generation that year. Wind and solar together are not yet a quarter of the grid. [5]
A gasoline car also dumps the exhaust where people breathe. Carbon monoxide, volatile organic compounds, nitrogen oxides, and particulates. Nitrogen oxides, not nitrous oxide. The American Lung Association has tied traffic exhaust to asthma and early death in cities. The closed-garage test is the plain version of the same fact. If the exhaust is unsafe in a garage, it is not a gift to the street. [6]
An EV has no tailpipe. Beijing’s air is cleaner than it was in the Olympic years. Tighter rules, scrapped old engines, and electric cars all played a part. The EV did not do that cleanup alone.
The Scale of the Gasoline Pile
The United States used about 137 billion gallons of gasoline in 2025. At 19.6 pounds per gallon, combustion alone is about 1.2 billion metric tons of carbon dioxide a year. Not 2.5 billion. The 2.5 figure is about double the arithmetic. Upstream extraction and refining add more. They do not double it. [7]
Biofuels and “clean gasoline” still burn. Ethanol takes land, water, and fertilizer, and the gallon still becomes carbon dioxide in the engine. A refinery still sits next to somebody’s neighborhood, with the sludge and the flares that come with it.
Refining also uses cobalt catalysts. Section 3 is that comparison. The short version: a lithium iron phosphate battery uses no cobalt, and a growing share of new EVs are built that way.
The Battery’s Carbon, Once
Building the battery has a carbon cost. Mining and refining lithium, nickel, and graphite are not free. Over the life of the car the electric mile still comes out ahead, on the order of half the greenhouse gases or better, because the gasoline car pays its carbon bill every mile and the battery pays most of its bill once. [4]
The pack is getting simpler. General Motors’ Ultium platform cut a large share of the wiring with a wireless battery-management system. That is one company’s design, not a law of batteries.
Recycling is real and not yet the whole supply. Redwood Materials recovers the target metals at high rates once a pack is in the plant, and it now sends most of the EV packs it receives into a second life as stationary storage before shredding them. A claim that recycling will be above 95 percent by the end of 2026 confuses a process yield with the share of cars that actually come back. Collection is the limit. [8]
Conclusion
Follow the carbon and the gasoline car loses. It loses at the well, at the refinery, and at the tailpipe, every mile. The EV loses once, at the factory, and then rides a grid that is imperfect and still cleaner than a gallon.
The numbers in the old draft that said 26 percent, fivefold, and 2.5 billion tons do not survive the arithmetic. The direction does. Anyone who looks at that and calls it a wash should be asked to show the other set of books.
Footnotes
[1] U.S. Environmental Protection Agency: 8,887 grams of carbon dioxide per gallon of gasoline, 19.6 pounds. Upstream emissions from Argonne National Laboratory’s GREET model are on the order of a quarter of combustion, not a second gallon. EPA
[2] NOAA Global Monitoring Laboratory. Mauna Loa was about 315 parts per million in 1958. The global average in late 2026 is about 428. The rise is about 36 percent. Mauna Loa daily values in early fall sit a little lower because of the seasonal cycle. NOAA
[3] Intergovernmental Panel on Climate Change, Sixth Assessment Report. Methane global-warming potential is about 80 over 20 years and about 30 over 100 years, relative to carbon dioxide.
[4] International Energy Agency, Global EV Outlook 2026. A medium battery-electric car is more than 55 percent lower in lifetime greenhouse-gas emissions than a medium gasoline car on a global average. U.S. per-mile figures in this chapter use about 0.8 pounds of carbon dioxide per kilowatt-hour and 30 kilowatt-hours per 100 miles. IEA
[5] U.S. Energy Information Administration. Electric-power carbon dioxide rose about 4 percent in 2025. Coal generation rose 13 percent. Solar generation rose 34 percent. Utility-scale generation was about 58 percent fossil, 18 percent nuclear, and 24 percent renewable. EIA
[6] American Lung Association, State of the Air. Traffic exhaust is a major urban source of the pollutants tied to asthma and early death. ALA
[7] U.S. Energy Information Administration: about 136.7 billion gallons of gasoline in 2025. Combustion at 19.6 pounds per gallon is about 1.2 billion metric tons of carbon dioxide. EIA gasoline
[8] Redwood Materials. High recovery of target metals once a pack is in the plant, and most incoming EV packs routed to second-life storage before recycling. A 95 percent system-wide recycling rate by the end of 2026 is not the record.
