Maps and Data

Find maps and charts showing transportation data and trends related to alternative fuels and vehicles.

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- Transit Buses by Fuel Type
  
  Trend of buses powered by various fuels in the United States, 2007-2021 Last update April 2024
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- Fuel Economy and Consumption of Light-Duty Vehicles
  
  Relationship between fuel economy and lifetime fuel consumption for light-duty vehicles Last update May 2021
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- Fuel Economy at Various Driving Speeds
  
  Trend of fuel efficiency at different vehicle speeds, grouped by fuel type Last update May 2021
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- Greenhouse Gas Emissions by Economic Sector
  
  Trend of U.S. greenhouse gas emission for each economic sector Last update May 2024
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- AFV Requirements, Acquisitions, and Credits for Federal Agencies
  
  Displays EPAct alternative fuel vehicle (AFV) acquisition requirements, total AFV acquisitions, and additional credits toward the acquisition requirements for federal agencies from fiscal years 2000 through 2023 Last update April 2024
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- Clean Cities and Communities Energy Use Impact by VMT Reduction and FE
  
  Trend of energy impact by fuel economy (FE) improvements and reductions in vehicle miles traveled (VMT) from 2004 to 2022 Last update February 2024
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- Clean Cities and Communities Alternative Fuel Vehicle Inventory
  
  Alternative fuel vehicle inventory reported by Clean Cities and Communities coalitions from 2004 to 2022 Last update February 2024
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- Average Retail Fuel Prices in the United States
  
  Trend of alternative and traditional motor fuel prices from 2000 to 2025 Last update April 2025
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- Light-Duty AFV Registrations
  
  Breakdown of alternative fuel vehicle (AFV) registrations by fuel type Last update June 2024
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- EPAct State & Alternative Fuel Provider Fleet Exemptions
  
  Trend of State & Alternative Fuel Provider (S&FP) exemption requests and vehicles exempted from 1997 to 2023 Last update June 2024
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- Energy Expenditures by Sector
  
  Trend of U.S. transportation and residential energy expenditures, per capita, from 1970 to 2021 Last update January 2024
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- Fuel Use by Transportation Mode in 2019
  
  Breakdown of fuel used in the United States by transportation mode, 2019 Last update May 2023
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- Annual Vehicle Credits Earned and Used by Regulated Fleets
  
  Trend of State & Alternative Fuel Provider (S&FP) EPAct credits traded and transactions from 1999 to 2023 Last update May 2024
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- Average Per-Passenger Fuel Economy by Travel Mode
  
  Comparison of per-passenger fuel economy for various modes of transportation Last update October 2022
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Transit Buses by Fuel Type

	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021
Diesel	52068.702	46687.212	44669.248	43585.262	43926.125	42778.9765	40051.257	42467.67599999999	39139.93299999999	36091.2172	32717.939	32670.64318	29988.68003824	31028.13293803062	34652.765
Gasoline	391.494	332.53	453.824	463.673	553.4	666.7764999999999	711.39	650.13	773.449	1130.544	1382.965	1177.6191	1165.8278723	1089.98125075049	1036.0105
Natural Gas	10178.844	12303.61	11864.256	12320.454	12866.55	13546.091	11951.352	11031.138	15391.2715	18218.552	20799.729	19150.6784	21486.3870446232	21944.9558484432	18369.5379
Hybrid	1500.727	2527.228	3176.768	4636.73	6087.4	7720.57	12733.881	11691.804	11414.858	11391.98	10557.996	13872.166	12696.4036037496	13661.09834273948	13103.7466
Biodiesel		4389.396000000001	4149.2480000000005	5100.403	5464.825	5228.931500000001	5477.703	5030.213000000001	5223.389999999999	4990.904	6662.267000000001	4274.781	5849.944905067199	4069.263336135163	2557.8742
Other	1109.233	266.024	518.6560000000001	132.478	276.7	245.6545	213.417	195.039	132.04	132.784	266.104	597.366	556.7276485568	1017.315834033791	1750.5005

Source: Derived from Tables 21 and 34 in Appendix A of the 2023 Public Transportation Fact Book, American Public Transportation Association

Notes: "Natural Gas" includes compressed and liquefied forms. Since 2007, "Other" includes battery electric, hydrogen, and propane.

This chart depicts the number of transit buses in use in the United States, categorized by fuel type, from 2007 to 2021. In all years shown, diesel buses represent the largest portion of total buses, with natural gas buses a distant second. Hybrid buses are the fastest growing category as they have increased more than eight times from 2007 to 2021. The increase in both natural gas and hybrid buses is largely a result of favorable economics and clean air benefits in the transit bus application. Between 2020 and 2021, the total number of buses decreased. Diesel buses had the largest change with an increase of 7%. Natural gas buses had the largest decrease by 4%.

To view more details, notes, and acronyms, please download the Excel spreadsheet.

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U.S. Department of Energy - Energy Efficiency and Renewable Energy

Alternative Fuels Data Center

Maps and Data

OR

Transit Buses by Fuel Type

Fuel Economy and Consumption of Light-Duty Vehicles

Fuel Economy at Various Driving Speeds

Greenhouse Gas Emissions by Economic Sector

AFV Requirements, Acquisitions, and Credits for Federal Agencies

Clean Cities and Communities Energy Use Impact by VMT Reduction and FE

Clean Cities and Communities Alternative Fuel Vehicle Inventory

Average Retail Fuel Prices in the United States

Light-Duty AFV Registrations

EPAct State & Alternative Fuel Provider Fleet Exemptions

Energy Expenditures by Sector

Fuel Use by Transportation Mode in 2019

Annual Vehicle Credits Earned and Used by Regulated Fleets

Average Per-Passenger Fuel Economy by Travel Mode

Maps and Data

OR

Transit Buses by Fuel Type

Fuel Economy and Consumption of Light-Duty Vehicles

Fuel Economy at Various Driving Speeds

Greenhouse Gas Emissions by Economic Sector

AFV Requirements, Acquisitions, and Credits for Federal Agencies

Clean Cities and Communities Energy Use Impact by VMT Reduction and FE

Clean Cities and Communities Alternative Fuel Vehicle Inventory

Average Retail Fuel Prices in the United States

Light-Duty AFV Registrations

EPAct State & Alternative Fuel Provider Fleet Exemptions

Energy Expenditures by Sector

Fuel Use by Transportation Mode in 2019

Annual Vehicle Credits Earned and Used by Regulated Fleets

Average Per-Passenger Fuel Economy by Travel Mode

Transit Buses by Fuel Type

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