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 January 2024
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Average Monthly Fluctuation in U.S. Vehicle Miles Traveled
U.S. vehicle miles traveled for each month of the year, averaged from 2010 to 2023 Last update October 2024
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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 June 2022
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Annual Vehicle Miles Traveled in the United States
Trend of vehicle miles traveled from 1970 to 2023 Last update October 2024
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Average Vehicle Trip Length by Purpose (2017)
Comparison of average vehicle trip length by purpose in the United States Last update October 2022
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Share of All U.S. Vehicle Trips by Length (miles)
Breakdown of trip lengths among all vehicle trips Last update January 2024
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Average Annual Fuel Use by Vehicle Type
Comparison of fuel use (per vehicle) among vehicle types Last update May 2024
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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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