A payment is one part of ownership
After the payment, what room is left for actually owning the car? I’d make space for insurance, fuel or electricity, registration, parking where relevant, routine maintenance and a repair reserve. Some bills arrive monthly; others turn up less often.
Dividing an annual estimate into a monthly planning amount can make those irregular expenses easier to see before you choose.
An original two-car worksheet
Use two synthetic vehicles and the same annual driving distance. Give each its own insurance estimate, energy assumptions and service plan, then add its financing payment. Leave a field blank when you do not have evidence instead of entering zero.
A missing insurance quote is not free insurance; unknown tire cost is not a maintenance advantage. This discipline can change a comparison that initially looked obvious from the payment alone.
Separate cash flow from value loss
Depreciation affects what a vehicle may be worth when sold, but it is not the same as an extra monthly bill. Avoid counting both full loan principal and full depreciation as if they were independent cash payments in one simple budget.
Decide whether you are comparing monthly cash flow or economic ownership cost, label the method and use it consistently for every candidate.
Preserve room to change your mind
A comfortable plan leaves some capacity for an unexpected repair or a change in driving. Compare a less costly model or different purchase timing before stretching the term solely to reach a target payment. OffLot does not forecast resale values or know your household finances.
The worksheet is a way to identify the next quote or fact to collect, not a claim that a vehicle is affordable for you.