Maps and Data
Find maps and charts showing transportation data and trends related to alternative fuels and vehicles.
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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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Average Fuel Economy by Major Vehicle Category
Comparison of fuel economy among vehicle types Last update February 2020
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Monthly Fluctuation in U.S. Vehicle Miles Traveled
U.S. vehicle miles traveled for each month of the year, averaged from 2009 to 2019 Last update April 2020
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Share of All U.S. Vehicle Trips by Length (miles)
Breakdown of trip lengths among all vehicle trips Last update July 2021
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Means of Transportation to Work
Trend of how people commuted to work in the United States from 1980 to 2019 Last update May 2021
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Average Vehicle Trip Length by Purpose
Average trip length by trip purpose in the United States, 2019 Last update February 2019
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Annual Vehicle Miles Traveled in the United States
Trend of vehicle miles traveled from 1970 to 2019 Last update February 2020
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Average Annual Fuel Use by Vehicle Type
Comparison of fuel use (per vehicle) among vehicle types Last update February 2020
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Light-Duty Vehicles Produced in the United States
Trend in the number and types of light-duty vehicles produced from 1975 to 2018 Last update September 2020
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Fuel Taxes by Country
Comparison of gasoline and diesel taxes in Organization for Economic Cooperation and Development countries Last update March 2019
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Clean Cities Energy Use Impact through Idle Reduction
Trend of energy impact by idle reduction policies and technologies from 2004 to 2019 Last update May 2021
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Miles of U.S. Transportation Infrastructure
Distance covered by different types of transportation infrastructure in 2018 Last update April 2020
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Clean Cities Energy Use Impact by VMT Reduction and Fuel Economy
Trend of energy impact by fuel economy improvements and reductions in vehicle miles traveled (VMT) from 2004 to 2019 Last update May 2021
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Composition of New U.S. Light-Duty Vehicles by Vehicle Type
Shifting popularity of cars vs.trucks by year Last update April 2020
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Average Annual Vehicle Miles Traveled by Major Vehicle Category
Comparison of miles traveled (per vehicle) among vehicle types Last update February 2020
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Power and Fuel Economy of the Average Light-Duty Vehicle
Trend of vehicle horsepower and fuel economy, 1975-2019 Last update June 2020
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Clean Cities Coalition Locations
Displays coalition locations and boundaries across the United States Last update February 2021
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Law and Incentive Additions by Fuel/Technology Type
Trend of state law and incentive enactments, listed by the targeted technology or fuel type, from 2002 to 2020 Last update May 2021
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Average Fuel Consumption at Increasing Road Grades
Trend of fuel consumption at increasing road grades, for various vehicle types Last update August 2014
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Clean Cities Annual Energy Use Impact
Trend of reduced fuel use and increased fuel diversity from 1994 to 2019 Last update May 2021
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Clean Cities Cumulative Energy Use Impact
Cumulative trend of reduced fuel use and increased fuel diversity from 1994 to 2019 Last update May 2021
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Fuel Economy at Various Driving Speeds
| 45 | 55 | 65 | 75 | |
| Midsize Conventional Gasoline Car | 43 | 45 | 38 | 32 |
| Midsize Conventional Diesel Car | 57 | 55 | 45 | 37 |
| Midsize Hybrid Electric Car | 55 | 46 | 38 | 33 |
Source: Oak Ridge National Laboratory, Transportation Energy Data Book #39, Table 4.33.
This chart shows how fuel economy varies with driving speed for midsize cars of three fuel types, as modeled by Argonne National Laboratory's Autonomie model. Midsize conventional gasoline cars achieve their best fuel economy at 55 mph. The fuel economy of midsize conventional diesel cars declines gradually from 45 to 55 mph and then drops quickly thereafter. The midsize hybrid electric vehicle loses efficiency more evenly between 45 and 75 mph.
To view more details, notes, and acronyms, please download the Excel spreadsheet.
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