why does a small, light weight car generally have better fuel economy than a heavy car?

Answer 1

It has less weight to push, therefore using less fuel to push it.

Answer 2

simply put it as a heavier car needed more power to move and thus the higher fuel comsumption. Big heavier cars usually have a higher engine capacity and more cylinder number in engine.This is to carry the weight of the car itself. The higher = lower the fuel comsumption. Then again it also depends on the way you drive. A streamlined design help improve fuel economy by reducing opposing forces. When you are traveling at high speed, the wind blowing towards you actually slows you down causing the car to use more energy to move forward. Streamlined design will actually reduce opposing wind forces and also reducing the engine load. Thus improving fuel economy

Answer 3

because it is light weight and small the engine dose not have to work as hard as it would on a heavy weight car

Answer 4

Force = mass * acceleration

Thus, a larger car has to exert more force (and use more fuel) to achieve the same acceleration and movement.

Answer 5

Because it takes more fuel to move a heavier object.

Answer 6

Smaller cars usually have a smaller engine, thus more economical.

Answer 7

Because bigger cars need more energy to move its weight.

Answer 8

i guess its becoz of the weight..heavier objects take more time 2 move whereas lighter objects don't rily take much time

Answer 9

You've answered your own question.