Does the weight of a car affect it's gas milage?

Answer 1

yes the less weight on the vehicle the less drag it has and the more gas it can save. and the quicker the car can move..

Answer 2

Basic physics, it takes more energy to move a object the heavier it weighs with all other factors being equal or the same.

Wayne

Answer 3

Yes, it's simple physics. Newtons second law of motion states that the energy to move an object is equal to it's mass times acceleration.

While some may argue that mass is insignificant once the car reaches a steady speed, the truth is the car is never at a point of equilibrium for more than short periods. Due to traffic, hills, traffic signals....that additional mass will make a big difference in fuel economy. One estimate I've seen commonly used is that all other factors being equal, each additional 200 pounds of mass lowers fuel economy approximately one mile per gallon.

Answer 4

When you pick up a box or other item and move it, the heavier it is the harder you have to work. With a car it's the same way. The heavier the car the harder the engine has to work to move it. The harder an engine works the more energy it expends. That energy is Gasoline. And that's why small cars get better gas mileage, generally, than large cars.

Answer 5

yes a Car Having a heavy weigth spend more gass than a car having less weigth.. the fact is that if a car is less heavey in weight the Car engine is more in peace to work....otherwise wise virsa.. lolz...... just like human being...............

Answer 6

yes, but it is minimal unless you are hauling really heavy items.
Typically, about 2-3% decrease for ever 100 lbs.

Answer 7

YES IT HAS A BIG EFFECT

say you have a 10,000 pound car then you need atleast 1,000 ft lbs of torque to accelerate
for 1,000 ft lbs of torque you need way more fuel and air going into the cylinders

then you have a 2,000 pound car which is around the weight of most cars you only need around 200 ft lbs of torque to accelerate it efficiently and quickly for 200 ft lbs compared to 1,000 ft lbs you need much less fuel