Having extra weight on your car will make your engine work harder and reduces your mileage.
While it might seem easier to leave the kids’ sports gear, beach chairs, or cases of water in the trunk, avoid keeping unnecessary or heavy objects in your car and find somewhere else to keep those items when they’re not in use.
An extra 100 pounds in the trunk can reduce a typical car’s fuel economy by up to 2%, while a loaded roof rack or carrier creates wind resistance and can decrease fuel economy by 5%. Lightening the load can have a green impact too: For each gallon of extra gasoline saved, 20 pounds of CO2 is prevented from entering the environment.
CREDIT – ASK PATTY
September 1, 2016