AVOIR scores the 2003 Porsche Carrera 4 Cabriolet Kit's longevity 80/100 (excellent), estimated from high-mileage survival data and resale-panel evidence of how far these vehicles actually run.
AVOIR scores the 2003 Porsche Carrera 4 Cabriolet Kit on maintenance 68/100 and depreciation 69/100 — higher is better (lower real cost) — plus fuel, insurance and resale in the full breakdown above.
AVOIR scores every vehicle across 7 ownership factors using EPA fuel-economy data, NHTSA safety & complaints, IIHS ratings, and a proprietary used-market resale panel.