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Fuel consumption monitor from a 2006 Honda Airwave.The displayed fuel economy is 18.1 km/L (5.5 L/100 km; 43 mpg ‑US). A Briggs and Stratton Flyer from 1916. Originally an experiment in creating a fuel-saving automobile in the United States, the vehicle weighed only 135 lb (61.2 kg) and was an adaptation of a small gasoline engine originally designed to power a bicycle.
Energy efficiency is expressed in terms of fuel economy: [2] distance per vehicle per unit fuel volume; e.g., km/L or miles per gallon (US or imperial). distance per vehicle per unit fuel mass; e.g., km/kg. [11] distance per vehicle per unit energy; e.g., miles per gallon equivalent (mpg-e).
Simple model for energy vs vehicle speed. Air resistance is the main cause expended energy per distance when driving at high steady speeds. [11] At higher speeds, wind resistance plays an increasing role in reducing fuel economy in automobiles. At 60km/h, the global average speed, energy loss due to air drag in fossil fuel cars is approximately ...
The following table compares EPA's estimated out-of-pocket fuel costs and fuel economy ratings of serial production plug-in hybrid electric vehicles rated by EPA as of January 2017 expressed in miles per gallon gasoline equivalent (mpg-e), [1] [2] versus the most fuel efficient gasoline-electric hybrid car, the 2016 Toyota Prius Eco (fourth generation), rated 56 mpg ‑US (4.2 L/100 km; 67 mpg ...
Notes: All estimated fuel economy based on 15,000 miles (24,000 km) annual driving, 45% highway and 55% city (1) Conversion 1 gallon of gasoline=33.7 kW·h. (2) The 2014 i3 REx is classified by EPA as a series plug-in hybrid, while for CARB is a range-extended battery-electric vehicle (BEVx). The i3 REx is the most fuel economic EPA-certified ...
For gas cars with the best gas mileage, Honda offers the following: The 2024 Honda Civic starts at $23,950 with 35 mpg combined. The 2024 Honda Accord starts at $27,895 with up to 29 mpg in the ...
The EPA rated the Nissan Leaf electric car with a combined fuel economy of 99 MPGe, [9] and rated the Chevrolet Volt plug-in hybrid with a combined fuel economy of 93 MPGe in all-electric mode, 37 MPG when operating with gasoline only, and an overall fuel economy rating of 60 mpg-US (3.9 L/100 km) combining power from electricity and gasoline.
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