Check the engine, transmission, suspension, steering, brakes, AC, electrical systems, tires and chassis carefully.
Look for oil leaks, unusual engine noise, overheating, transmission hesitation, suspension knocks, steering vibration and poor AC performance. Inspect the body and underbody for accident damage, structural repairs, rust and flood damage.
Check the infotainment, cameras, sensors, parking assistance and ADAS systems because replacing modern electronic components can be expensive.
For a Hybrid, have the hybrid battery, inverter and complete hybrid system scanned professionally.
Also verify the vehicle's auction sheet or import documentation where available, along with service history and mileage.