Reasons Why Your Car's Fuel Efficiency Dropped

The fuel efficiency of your car, or the miles per gallon that you get per tank of gas, varies based on several factors. These factors include your driving conditions, age of your car and how well maintained your car is. One tank may last you a bit longer than another if you are driving on the freeway or in cleaner air conditions. This makes it hard to determine whether you are getting less miles per tank.