Cars  New vs. Old Car Cost Calculator
Calculate and compare the costs between owning a new vs. an old car.
The Car Cost Calculator  New Car vs. Old can be used to estimate the cost of ownership for a newer car vs. an older car  or a the cost of ownership for a more expensive car vs. a cheaper car.
The calculator can be helpful to
 decide when to replace an old car
 decide between different cars
 decide between buying or leasing a car
The default calculator is set up for a 3 years period but can be easily extended by copying cells as described below.
To use the Car Cost Calculator  New Car vs. Old  open the Car Cost Calculator  New Car vs. Old  save a copy of the spread sheet to your own Google Docs account (you need to be logged into your google account)  or download the spread sheet as an excel file to your computer.
Modify the values:
 add estimated sales value for the old car and the buying cost for the new one. If leasing is an alternative  set the Value to zero  add leasing signing costs in year 1 and yearly leasing costs for every year.
 add depreciation when you own the car  depreciation varies with car make, model and age. Typical values in range 1020% per year.
 add financing costs. When savings are used interest is lost and should be handled as a cost.
 add insurance costs
 add road taxes
 add expected mileage and fuel costs
 add service costs
 add regular maintenance costs  like tires, brake pads ..
 add unexpected repair costs
 add other costs  like supplementary equipment typically needed for a new car
Extend the calculator with more years by inserting new columns and copying the equations. Unlimited numbers of cars can be added.
The calculator can also be used to compare other similar investments like machinery and more.
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