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Energy Efficient Technologies

Energy efficient technologies are available now! Many currently available vehicles boast new, performance-enhancing, fuel-saving technologies that can save you money.

Engine Technologies

Technology Efficiency Increase
Cylinder Deactivation saves fuel by deactivating cylinders when they are not needed. 4%–10%1
Turbochargers & Superchargers increase engine power, allowing manufacturers to downsize engines without sacrificing performance or to increase performance without lowering fuel economy. 2%–6%1
Start-Stop Systems automatically turn the engine on/off when the vehicle is stopped to reduce fuel consumed during idling. 2%–4%1
Gasoline Direct Injection with turbocharging or supercharging delivers higher performance with lower fuel consumption. 2%–3%1
Valve Timing & Lift Technologies improve engine efficiency by optimizing the flow of fuel & air into the engine for various engine speeds. 1%–11%1

Transmission Technologies

Technology Efficiency Increase
Additional Gears allow your engine to operate at efficient speeds more often. 2%–8%1
Continuously Variable Transmissions (CVTs) have an infinite number of "gears", providing seamless acceleration and improved fuel economy. 1%–7%1
Automated Manual Transmissions (AMTs) combine the efficiency of manual transmissions with the convenience of automatics (gears shift automatically). 7%–10%2

Other Technologies

Technology Efficiency Increase
Reducing Vehicle Weight means less energy is needed to propel the vehicle. Significant improvement can be obtained with weight reduction and powertrain downsizing. 3%–4% per 5% reduction in weight1
Low Rolling Resistance Tires reduce the parasitic energy loss from tires rolling under load. 1%–3%1
View Data Sources...
  1. National Academy of Sciences. 2011. Assessment of Fuel Economy Technologies for Light-Duty Vehicles. The National Academies Press, Washington, D.C.
  2. Duleep, G. 2011. Comparison of Vehicle Efficiency Technology Attributes and Synergy Estimates.Adobe Acrobat Icon NREL/SR-6A20-47806.