SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/eng-ev-motor-efficiency

An EV turns over 77 percent of grid energy into power at the wheels. What about a gasoline car?

Only about 12 to 30 percent of the gasoline's energy reaches the wheels.

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  1. About 12 to 30 percent ✔
  2. About 60 to 70 percent
  3. About 85 to 95 percent

Why: Electric motors are very efficient at turning electricity into motion. Engines lose most of their fuel's energy as heat in the exhaust and cooling system.

Huh, didn't know that: EV electric motors also provide quiet, smooth operation and strong acceleration.

The dad joke
Gas engines are great space heaters that happen to move your car.
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References

Answer: About 12 to 30 percent. Electric motors are very efficient at turning electricity into motion. Engines lose most of their fuel's energy as heat in the exhaust and cooling system.

  1. US DOE and EPA, fueleconomy.gov, All-Electric Vehicles www.fueleconomy.gov/feg/evtech.shtml
    Conventional gasoline vehicles only convert about 12%-30% of the energy stored in gasoline to power at the wheels.
    Checked 2026-10-10.
  2. US DOE and EPA, Where the Energy Goes: Gasoline Vehicles www.fueleconomy.gov/feg/atv.shtml
    In gasoline-powered vehicles, most of the fuel's energy is lost in the engine, primarily as heat.
    Checked 2026-10-10.

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