Maps and Data - Fuel Economy at Various Driving Speeds
Find maps and charts showing transportation data and trends related to alternative fuels and vehicles.
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Vehicles: AFVs and HEVs
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AFV Acquisitions by Regulated Fleets (by Fleet Type)
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AFV Acquisitions by Regulated Fleets (by Fuel Type)
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AFV and HEV Model Offerings, by Manufacturer
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Annual Vehicle Credits Earned and Used by Regulated Fleets
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Average Range and Efficiency of U.S. All-Electric Vehicles
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Biodiesel Purchases by EPAct-Regulated Fleets
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Clean Cities Alternative Fuel Vehicle Inventory
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Clean Cities Energy Use Impact by Alternative Fuel Vehicle Type
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EPAct State & Alternative Fuel Provider Fleet Exemptions
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Light-Duty AFV, HEV, and Diesel Model Offerings, by Technology/Fuel
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Light-Duty AFV Registrations
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TransAtlas
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Transit Buses by Fuel Type
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Types of Vehicles by Weight Class
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U.S. HEV Sales by Model
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U.S. Plug-in Electric Vehicle Sales by Model
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Vehicle Credits Traded by Regulated Fleets
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Vehicle Weight Classes & Categories
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Vehicles: Fuel Consumption and Efficiency
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Average Annual Fuel Use by Vehicle Type
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Average Annual Vehicle Miles Traveled by Major Vehicle Category
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Average Fuel Consumption at Increasing Road Grades
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Average Fuel Economy by Major Vehicle Category
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Average Per-Passenger Fuel Economy by Travel Mode
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Average Range and Efficiency of U.S. All-Electric Vehicles
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Clean Cities Energy Use Impact by VMT Reduction and Fuel Economy
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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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