|
Older heavier car gets better gas mileage WHY?
I have two cars one is a rear wheel drive weighing 3300 pounds getting 28 mpg highway the other is front wheel drive weighing 2800 pounds getting 20 mpg. Both V-6.
The lighter vehicle is running over 14:1 fuel ratio it has power steering air pump and air conditioner not running when tested. I bought this car used air pump was not connected to catalytic converter was wondering if exhaust back pressure could be causing loss of fuel economy or does power steering take a lot of power to run or even front wheel drive versus rear wheel drive?
John
|