Report Highlights

The global transportation sector emitted 8.4 gigatons of CO2-equivalent in 2024.

  • Transportation accounts for 15.9% of global greenhouse gas emissions
  • Transportation is the third-largest polluting sector globally after power generation and manufacturing
  • Global transport emissions have increased 79% since 1990
  • Global transport emissions grew 1.3% from 2023 to 2024
  • The United States emits 20.2% of global transport emissions, the highest of any country
  • China's transport emissions increased over 900% since 1990
  • The United States increased transport emissions 17% since 1990

How much CO2 does the transportation sector emit?

The transportation sector emitted 8.4 gigatons (8442 million metric tons) of CO2-equivalent in 2024.

This includes all forms of transport: road vehicles, trains, ships, and aircraft worldwide.

What percentage of global emissions comes from transportation?

Transportation accounts for 15.9% of total global greenhouse gas emissions in 2024.

Total global greenhouse gas (GHG) emissions in 2024 reached 53.2 gigatons CO2-equivalent.

How does transportation rank among all sectors?

Transportation is the third-largest GHG-emitting sector globally after power generation and manufacturing.

Global emissions by sector in 2024

Global GHG Emissions by Sector (2024)
Sector Emissions (Mt CO₂e) % of Global Total
Power Industry 15,640 29.4%
Manufacturing 11,499 21.6%
Transportation 8,442 15.9%
Agriculture 6,241 11.7%
Fuel Exploitation 6,033 11.3%
Buildings 3,550 6.7%
Waste 1,803 3.4%


Global GHG emissions by sector 1970-2024

Global GHG emissions (CO2e) by sector 1970-2024
Global GHG emissions (CO2e) by sector 1970-2024


Power generation produces the most GHG emissions at 29.4% of the global total, followed by manufacturing (Industrial Combustion & Processes) at 21.6%.

How much have transportation emissions grown?

Transportation emissions increased 79% from 1990 to 2024.
 

Transport emissions growth over time (1990-2024)

Transportation Emissions Growth Over Time
Year Transport Emissions (Mt CO₂e)
1990 4,706
2000 5,889
2010 7,149
2020 7,221
2024 8,441


Transportation emissions grew from 4.7 gigatons in 1990 to 8.4 gigatons in 2024, nearly doubling in 34 years. The only significant decline occurred in 2020 during the COVID-19 pandemic when emissions dropped 14% to 7.2 gigatons before recovering.


How fast did transportation emissions grow in 2024?

Transportation emissions increased 1.2% from 2023 to 2024, adding 99 million metric tons.

Transportation emissions reached 8,441 million metric tons in 2024 compared to 8,342 million metric tons in 2023. This 1.2% growth rate is slower than recent years, potentially indicating effects from electric vehicle adoption and efficiency improvements.

Which countries have the highest transportation emission growth?

China, India, and Indonesia each increased transportation emissions by over 300% since 1990.


Transportation emissions growth by country (1990-2024)


Transportation Emissions Growth by Country (1990–2024)
Country/Region Transportation CO₂e Growth
GLOBAL TOTAL 79%
United States 17%
China 905%
European Union 21%
India 429%
Russia -4%
Brazil 166%
Japan -18%
Canada 33%
Indonesia 370%
Iran 285%
Saudi Arabia 189%
Germany -14%
Mexico 52%
France 5%
South Korea 148%
United Kingdom -8%
Italy 8%
Australia 61%
Türkiye 255%
Spain 50%
Thailand 196%
Poland 236%
Egypt 285%
Nigeria 414%
Malaysia 311%
Viet Nam 1126%
Algeria 206%
Argentina 69%
Pakistan 238%
Iraq 105%
South Africa 51%
Philippines 181%
United Arab Emirates 239%
Colombia 127%
Taiwan 65%
Kazakhstan 113%
Chile 227%
Peru 308%
Netherlands -10%
Belgium 18%
Ukraine -59%
Romania 93%
Ecuador 184%
Czechia 196%
Libya 219%
Austria 45%
Uzbekistan 154%
Morocco 397%
Kuwait 565%
Greece 22%
Israel 117%
Portugal 75%
Venezuela -44%
New Zealand 73%
Switzerland -1%
Sweden -28%
Bolivia 511%
Bangladesh 707%
Hungary 62%
Myanmar/Burma 904%
Sudan and South Sudan 242%
Qatar 782%
Oman 667%
Norway 26%
Ireland 131%
Denmark 10%
Guatemala 545%
Kenya 285%
Tanzania 1384%
Sri Lanka 306%
Serbia and Montenegro 131%
Bulgaria 57%
Belarus -14%
Ghana 511%
Azerbaijan 56%
Turkmenistan -4%
Tunisia 263%
Finland -23%
Dominican Republic 289%
Angola 755%
Hong Kong 83%
Croatia 123%
Jordan 192%
Ethiopia 851%
Côte d’Ivoire 518%
Slovakia 80%
Cambodia 3343%
Paraguay 313%
Lebanon 245%
Costa Rica 296%
Singapore 52%
Panama 379%
Lithuania 7%
Senegal 661%
Honduras 410%
Slovenia 98%
Syria -30%
Nepal 1358%
North Korea -12%
DR Congo 766%
Georgia 26%
El Salvador 259%
Mozambique 644%
Benin 2573%
Uruguay 187%
Afghanistan 353%
Luxembourg 63%
Bosnia and Herzegovina 90%
Mali 2653%
Cameroon 120%
Uganda 545%
Bahrain 287%
Mongolia 104%
Burkina Faso 1998%
Latvia -7%
Yemen -32%
Mauritania 889%
Jamaica 147%
Trinidad and Tobago 98%
Guinea 556%
Laos 2148%
Nicaragua 253%
Zambia 231%
North Macedonia 219%
Estonia 0%
Zimbabwe 12%
Botswana 257%
Armenia -22%
Tajikistan 207%
Papua New Guinea 104%
Puerto Rico 19%
Moldova -10%
Cyprus 73%
Namibia 237%
Madagascar 196%
Niger 628%
Albania 118%
Kyrgyzstan -75%
Haiti 234%
Réunion 270%
Malawi 775%
Congo 158%
Chad 1161%
Brunei 126%
New Caledonia 130%
Mauritius 179%
Cuba -76%
Togo 188%
Curaçao 35%



How much did global transportation-sector CO₂e emissions change from 1990 to 2024?

Global transportation-sector CO₂e emissions increased 79% from ~4.7 Gt in 1990 to ~8.4 Gt in 2024—nearly doubling over 34 years.

Which major emitters recorded the largest increases in transportation-sector CO₂e from 1990 to 2024?

Among major emitters, transportation-sector CO₂e grew fastest in China (+905%), India (+429%), Nigeria (+414%), and Indonesia (+370%), reflecting rapid motorization and freight growth from relatively low 1990 baselines.
 

Which major economies reduced their transportation-sector CO₂e between 1990 and 2024?

Japan (−18%), Germany (−14%), and the United Kingdom (−8%) cut transportation-sector CO₂e versus 1990.
 

How did the United States and the European Union (EU27) change in transportation-sector CO₂e from 1990 to 2024?

U.S. transportation-sector CO₂e rose 17% over 1990–2024; EU27 transportation-sector CO₂e rose 21% - both below the global growth rate of 79%.
 

What’s the one-line takeaway for 1990–2024 transportation emissions?

Global transport CO₂e is up 79% since 1990; growth is concentrated in rapidly developing economies, while a few mature economies - Japan, Germany, UK - have reduced transport emissions versus 1990.

Which countries emit the most CO2 in total?

China emits 29.2% of global greenhouse gases, the highest of any country.

Top 10 CO₂ polluting countries and regions in 2024

Top 10 CO₂e Emitting Countries & Regions (2024)
Rank Country/Region Total Emissions (Mt CO₂e) % of Global
1 China 15,536 29.2%
2 United States 5,913 11.1%
3 India 4,371 8.2%
4 European Union 3,165 5.9%
5 Russia 2,576 4.8%
6 Indonesia 1,324 2.5%
7 Brazil 1,299 2.4%
8 Japan 1,063 2.0%
9 Iran 1,055 2.0%
10 Saudi Arabia 839 1.6%


The top six emitters - China, United States, India, European Union, Russia, and Indonesia - account for 61.8% of global greenhouse gas emissions.

Which countries emit the most CO2 from transportation?

The United States emits 20.2% of global greenhouse gases from domestic transportation, the highest of any country, followed by China with 9.4%, and India with 4.2%.

Top 50 transportation CO₂ emitters by country (2024)


Top 50 transportation CO₂ emitters by country (2024)
Rank Country/Region 2024 Emissions (Mt CO₂e) % of Global
GLOBAL TOTAL 8441.6 100%
1 United States 1702.8 20.2%
2 China 957.4 11.3%
EU27 791.3 9.4%
International Shipping 704.5 8.3%
International Aviation 618.8 7.3%
3 India 354.2 4.2%
4 Russia 291.3 3.5%
5 Brazil 223.7 2.6%
6 Japan 177.2 2.1%
7 Canada 168.9 2.0%
8 Indonesia 154.4 1.8%
9 Iran 153.3 1.8%
10 Saudi Arabia 145.1 1.7%
11 Germany 139.6 1.7%
12 Mexico 129.2 1.5%
13 France 120.5 1.4%
14 South Korea 110.8 1.3%
15 United Kingdom 108.0 1.3%
16 Italy 106.0 1.3%
17 Australia 102.4 1.2%
18 Türkiye 100.2 1.2%
19 Spain 96.4 1.1%
20 Thailand 84.7 1.0%
21 Poland 69.4 0.8%
22 Egypt 63.7 0.8%
23 Nigeria 61.6 0.7%
24 Malaysia 61.2 0.7%
25 Vietnam 52.2 0.6%
26 Algeria 49.5 0.6%
27 Argentina 48.8 0.6%
28 Pakistan 48.8 0.6%
29 Iraq 45.4 0.5%
30 South Africa 45.3 0.5%
31 Philippines 39.4 0.5%
32 United Arab Emirates 38.9 0.5%
33 Colombia 37.8 0.4%
34 Taiwan 36.7 0.4%
35 Kazakhstan 31.5 0.4%
36 Chile 30.3 0.4%
37 Peru 29.7 0.4%
38 Netherlands 24.7 0.3%
39 Belgium 24.2 0.3%
40 Ukraine 23.1 0.3%
41 Romania 23.0 0.3%
42 Ecuador 22.6 0.3%
43 Czechia 20.9 0.2%
44 Libya 20.3 0.2%
45 Austria 20.2 0.2%
46 Uzbekistan 19.8 0.2%
47 Morocco 19.8 0.2%
48 Kuwait 19.3 0.2%
49 Greece 18.8 0.2%
50 Israel 17.7 0.2%


The top six polluters from domestic transportation - United States, China, European Union, India, Russia, and Brazil - account for 51.1% of global transportation GHG emissions.

How much CO2 does each person produce?

On average, each person in the world produced 6.56 tons of CO2 emissions per capita in 2024, but the actual numbers vary dramatically across countries.

Per capita CO2e emissions growth by country in 1990-2024

Per capita CO2e emissions in top emitting economies (1970-2024)
Per capita CO2e emissions in top emitting economies (1970-2024)


The United States emits 17.3 tons of CO2-equivalent per person, nearly six times more than India's 3.0 tons per person. These differences reflect vehicle ownership rates, travel distances, urban design, and freight transport intensity.


What were 2024 per-capita CO₂e emissions in the United States, China, the EU-27, and India?

United States: 17.4 t CO₂e/person, China: 10.8, EU-27: 7.1, India: 3.0.

What gases does transportation emit?

Transportation emits 98.3% carbon dioxide (CO2), 1.3% nitrous oxide (N2O), and 0.4% methane (CH4).

Carbon dioxide dominates transportation emissions because it comes directly from burning gasoline, diesel, jet fuel, and marine fuel. Nitrous oxide comes mainly from catalytic converters and ship engines. Methane results from incomplete fuel combustion.

Sources


Methodology notes

Transportation sector includes all domestic and international transport: road vehicles, rail, aviation, maritime shipping, and inland waterways. Emissions converted to CO2-equivalent using IPCC Fifth Assessment Report (AR5) 100-year global warming potential values.

International shipping and aviation are also included in this sector, but are presented separately in the country-based data due to their international nature (international transport cannot be allocated to a single country).