Take This Quiz To Find Out If You’re A Car Engine Expert!

How much fuel is left over after the combustion process?

82%
Power station of a new e.GO Life electric car
Retry Correct Incorrect Not all of the fuel is completely consumed by the combustion process. Afterward, a small amount of fuel will still be present, and some of it reacts to form oxygenates, including formaldehyde and acetaldehyde.
Maja Hitij/Getty Images
Maja Hitij/Getty Images

How much fuel is left over after the combustion process?

  • None
  • A small amount
  • Most of it
  • All of it
82%

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