How to get better gas milage. Ford says there nothing wrong with the car. on 2008 Mercury Sable

Hwy driving is 24 miles per town 17to 20 miles per gal.

Asked by for the 2008 Mercury Sable
it is all about driving habits and keeping your serviced regularly. there is no formula for better mileage as it falls on the driver.

It is not the driving habits. I know how to drive a car, plus I work as a repair on trucks. Try again.