Fuel efficiency (or fuel economy) is a form of thermal efficiency, meaning the ratio of effort to result of a process that converts chemical potential energy contained in a carrier (fuel) into kinetic energy or work.

Dec 12, 2025 · Quick Picks Top 10 - Most Efficient Vehicles Compare Old vs. New EPA MPG Find a SmartWay Vehicle Extreme MPG

Much of this research focuses on technologies that can improve the efficiency of a variety of vehicles, including internal combustion, alternative fuel, and plug-in electric vehicles.

Fuel efficiency measures the distance a motor vehicle can travel on a single gallon of gas. As a result, boosting the efficiency of these vehicles can help limit the impact on climate change.

Nov 7, 2025 · Fuel Economy ... Explore the details of vehicle fuel economy, from current emissions regulations and automotive trends to the information on your new car’s window sticker.

Sep 30, 2025 · Fuel efficiency refers to how effectively a vehicle converts fuel into movement. In the United States, it’s usually expressed as miles per gallon (MPG), which estimates how many miles a …

Dec 12, 2025 · Consumer Reports guide to fuel economy will help you find the most fuel efficient car and save money at the pump.

Fuel efficiency measures how much fuel it takes to travel a set distance. Fuel economy, on the other hand, measures the distance a car can travel on a single gallon of fuel (typically expressed as miles …

Mar 24, 2025 · Engine fuel efficiency is determined by measuring how much of the energy in the fuel gets converted into power for the vehicle. Most gasoline engines are 30 to 35% efficient.

Nov 9, 2024 · Fuel economy refers to the efficiency of a vehicle in using fuel for travel. It’s commonly measured in miles per gallon (MPG) or liters per 100 kilometers (L/100km).