Reference

Yearly upkeep: scheduled maintenance by the year

Enter up to six services from your schedule with their intervals and what each visit costs you. The calculator counts visits a year, whichever interval comes first, and totals the year.

Miles a year (from setup, or your own estimate) Service 1 Service 1: interval miles Service 1: interval months Service 1: cost per visit ($) Service 2 Service 2: interval miles Service 2: interval months Service 2: cost per visit ($) Service 3 Service 3: interval miles Service 3: interval months Service 3: cost per visit ($) Service 4 Service 4: interval miles Service 4: interval months Service 4: cost per visit ($) Service 5 Service 5: interval miles Service 5: interval months Service 5: cost per visit ($) Service 6 Service 6: interval miles Service 6: interval months Service 6: cost per visit ($)

Assumptions behind the numbers

Visits a year are the larger of miles a year divided by the interval miles and 12 divided by the interval months. That is the whichever-comes-first rule: the more frequent interval sets the pace.
A blank interval is ignored, so a miles-only item uses miles and a time-only item uses months. A row with neither is skipped.
Costs are what you enter: your own invoices or written quotes. The calculator has no prices of its own.
This covers scheduled maintenance only. Repairs, tires, wear items such as brake pads, and fees not on your quotes are not in it.
Published averages from AAA and the Department of Energy rest on different cars and assumptions; Your maintenance schedule and Hybrids and electric cars give them with their conditions.

Limits

The total is your schedule at your prices, under the miles a year you entered. It is not a forecast of what the car will cost: repairs, tires and wear items are not in it, and a published average describes other cars under other assumptions. It gives no advice on whether to keep, repair or replace a car.