When sourcing used Toyota cars, the most critical step is obtaining a comprehensive vehicle history report (such as Carfax or regional equivalents) to check for accidents, title brands, and mileage rollbacks. For B2B buyers, it is mandatory to request a Third-Party Inspection (TPI) from reputable firms like SGS or TÜV Rheinland. Focus on the engine health, transmission fluidity, and chassis integrity. For hybrid models like the Prius or Camry Hybrid, always request a battery health diagnostic report, as the traction battery is the most expensive component to replace.