AAA says don’t rely too much on that “miles-to-empty” warning in your car.
Researchers tested the accuracy of these systems and found the estimates vary over shorter trips or are dependent on the consistency of things that affect gas mileage, like speed and acceleration. And the vehicle error varied greatly, ranging from -6.4% to 2.8%. A survey by AAA found that 74% of drivers say they use their "miles-to-empty" display to decide when to get gas. Read on!