One of the most popular program modules is the Mileage Calculator. The Mileage Calculator lets you record and save each trip made. Just enter the the miles, gallons and cost for each segment and a running total of the miles per gallon, cost of fuel and total miles are calculated automatically. The report print out gives you the miles per gallon, miles traveled and cost for each segment plus the total cost, average miles per gallon, average cost per gallon, fuel cost per mile and total miles for the trip. A notes window for each segment lets you enter information about each stop ( such as brand of fuel, terrain etc. ). This lets you track which fuel works best in your RV and also tells you when there is a decrease in fuel mileage to alert you that you may need a tune up or there is another problem developing. Each trip may be saved as a file so that you may track mileage for more than one vehicle at a time. Version 5 also has a metric conversion and a metric start up option to let our Canadian customers keep track of kilometers per liter.