Divide mileage by fuel usage to see your car's fuel consumption. This tells you how many miles you drove per gallon of gas. For example, if you drove 335 miles before refueling, and you filled your car up with 12 gallons of gas, your fuel consumption was 27.9 miles per gallon, or mpg (335 miles / 12 gallon = 27.9 mpg).
Failure on the left side is linked to a general weakening of the heart muscle. This is the more common type of heart failure. The weakened heart muscle no longer can keep up with the demands of the body for oxygen-rich blood. Back-up into the lungs occurs. Symptoms of left-side heart failure include: 1  Tiredness (fatigue). 2  Shortness of breath. 3  Asthma-like wheezing.
Congestive heart failure can affect the right side, left side or both sides of the heart. When the right side of the heart begins to function less efficiently, it is unable to pump much blood into the vessels of the lungs.hen the left side of the heart fails, it is unable to pump blood to the body efficiently. Blood begins to back up into the vessels in the lungs and the lungs become stressed. Breathing becomes faster and more difficult.