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Monthly · 10 min

Car Ownership Ritual

Cost per kilometre, last 12 months — everything the car took — fuel, insurance, tax, service, repairs, tyres, parking — divided by the kilometres driven; the number for the buy-or-keep decision.

$12one-time · VAT included · no subscription

Free files

In your download: 8 files

Excel workbook · Light · USD
START HERE guide (PDF)
Excel workbook · Dark Mode
Excel workbook · UK · GBP
Excel workbook · EUR
Excel workbook · AUD
Excel workbook · CAD
Excel workbook · INR

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✓Download page opens right after payment + links by e-mail. No account.

Works inExcel Google Sheets

✓Excel 2016+ / Microsoft 365 · Google Sheets (upload to Drive)

✓Light + Dark · USD GBP EUR AUD CAD INR · PLN pricing — every edition in one download

✓Free updates forever · 14-day refund

Part of the Complete Collection — 119 workbooks, every edition, future releases, $99.

The Monthly page

What the file tells you every month

Every cost the car takes, every wear item and when it is due by kilometres or by date — and one number nobody knows about their own car: what it costs per kilometre over the last twelve months, with fuel consumption against what it should be and repairs as a share of the year.

01 · verdictMoney — this month vs budget, 12 months, how much was repairs

02 · verdictService — what is overdue by km or by date, what is due

03 · verdictFuel — litres per 100 km vs what it should get, fuel per km

Sheets in the workbook

✓Monthly · cost per km, three verdicts, three tasks

✓Costs · every cost; fuel lines with odometer and litres

✓Service · every wear item with km and month intervals — due computed against the odometer

✓Months · spent, fuel, repairs, litres per month

✓Settings · the car, today's odometer, budget, warning windows, expected consumption

How it works

1Set the car up — odometer, budget, warning windows, expected L/100 km — once; update the odometer monthly

2Log every cost — fuel with odometer and litres; the rest as it comes

3Open Monthly — cost per km, three verdicts, three tasks — ten minutes

Who it is for

Anyone who suspects their car costs more than they think and has never added it up.

Dark edition included

Do I need Excel?

Excel 2016+ or Microsoft 365. Or upload the .xlsx to Google Drive — it opens in Sheets with formulas and charts intact.

Can I pay with BLIK?

Yes — BLIK, Przelewy24, any card, Apple Pay and Google Pay. Prices in PLN, EUR or USD; the currency switch is at the top.

Invoice for my company?

Tick “I’m purchasing as a business” at checkout and enter your NIP / VAT ID. The invoice arrives with the download e-mail.

What if it isn’t for me?

14-day refund, no questions. One e-mail to [email protected].

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Car Ownership Ritual

What the file tells you every month

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