Parametric TCO explorer — choose a dataset, drag sliders to re-rank live. Add datasets in tco_tool/datasets/.
Driving & ownership
Fuel & energy
EV range applied once/day, capped at ~313 driving days/yr (6/7 — holidays/sick days). Raise for 2-trip/longer days → more gas.
Insurance & repair
adds flat $4,300/yr per teen (driver-rated, ~same for all cars)
0 = expected cost · 1 = + one major repair (tail)
Filters
switch vehicle set — add more in tco_tool/datasets/
Ranked by 5-year TCO (click a column to sort)
Vehicle
Type
Trans
Purchase
Fuel
Insurance
Repair
Residual
TCO
$/mi
2nd LR
3rd LR
Cooled
Model: TCO = purchase + fuel + insurance + repair − residual, over the ownership window. Residual scales with age (×0.85/yr beyond yr 5) and mileage (×0.93 per +10k mi beyond 90k) — an approximation. All 22 residuals calibrated to ~7.5yr/135kmi (CarEdge/iSeeCars year-7.5); the Navigator uses ~12.5yr/180kmi. PHEV residuals reflect the out-of-warranty battery at 135k mi — the most uncertain estimate. PHEV fuel uses the real-world EV range applied once per driving day (one overnight charge): electric share = min(1, EV range ÷ miles-per-driving-day); the rest runs on gas. So a single short trip can be ~100% electric, but 2-trip or longer days shift toward gas — drag the slider to match your pattern. Insurance is adults-only base × multiplier; teens add a flat $4,300/yr each. Repair = expected + (risk × one major repair). All figures are planning estimates — get real insurance quotes and a PPI before buying.