About 70%
Updated answer,
At what cost is efficiency, when the air you breath is polluted by fossil fuel burning vehicles.
Would you drive a safe inefficient car that did not pollute the atmosphere you breath.
Google MDI compressed air cars and see what this French company is trying to do. Its not a long distance design at the moment however development could solve these problems. " Get behind the compressed air car and you'll maybe breath"
As a "heat engine", a car engine must rid itself of heat to continue. Efficiency of the heat engine depends on the difference in temperature; therefore, as the temperature outside reaches the temperature inside, the engine stops.
That depends on the size and efficiency of the car/engine.
It can effect engine performance and fuel burning efficiency.
It increases engine power and also increases fuel efficiency.
The fuel efficiency of an engine will depend on the car itself, amongst other factors.
Efficiency(weight), or E(w)
Gasoline engines have a 30% efficiency, as compared to a Diesel engine having 40% efficiency. COOL HUH
it can start but it won't go far as the engine will "explode" because of the increase of temperature. A thermostat regulates the temperature system of your car.. Usually the engine will run too cold with out a thermostat. That will hurt the efficiency of the engine.
A torque converter. And usually a clutch as well, for better fuel efficiency.
25%
The maximum Thermal Efficiency of Petrol Engine or Gasoline Engine or Otto Cycle Engine is about 25-30%.
It is not a good efficiency engine.