Why cars motor is on the front and not on the back of the car?
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It is easier to put the motor at the front. Most engines are water-cooled, so they need a radiator with air flowing through it to keep things cool. Mounting the radiator up front, air will naturally flow through it as you drive, but you can also strap a fan to the front of the engine to help with cooling; also keeping the engine and radiator close helps reduce the amount of plumbing and keeps air from getting trapped in the cooling system.
Mounting the engine at the very back has some adverse affects on handling – it makes the car more likely to oversteer and spin if you are taking a sharp turn and loose traction at the rear; this is difficult for a novice driver to recover from.
Race cars mount the engine in the center of the vehicle (like the new Corvette does) for optimal handling and weight distribution in the vehicle, but this has the disadvantage that you can’t easily have a second row of seats in the car without it being *very* long.
So front-engine is the mounting location with the fewest compromises for a reasonable price.
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