About this calculator
Choosing between a new car and a late-used example is rarely about sticker price alone. Depreciation hits new cars hardest in early years, while used cars need a honest repair buffer.
This calculator builds two approximate net-cost paths over the years you will keep the car, then answers “Is this used car financially sensible?” with clear Estimated / Approximate language. Always commission a pre-purchase inspection.
Formula summary
Parallel net-cost paths for new and used with repair buffer and indicative residuals.
Assumptions
- Used-car history, accidents and flood damage are not detected by maths — inspect independently.
- Repair buffers are user inputs; underestimating them skews “sensible” verdicts.
- Language is Estimated / Approximate / Indicative — never a purchase recommendation.