General Conditions

yearsDriving X
estCostPerGal X
oilChangeCost X

Current Car

currMpg X
currInitialCost X
currRepairsCost X
sellValue X
milesDriven X
monthsOwned X

New Car

estMpg X
newInitialCost X
newRepairsCost X
newSellValue X

Results

currCarCpm
newCarCpm
savingsPerMile
avgSavingsPerMonth
avgSavingsPerYear
totalSavings