Great question. Here’s a full checklist from experience: Documents first: Always verify the customs papers (Form M or NAFDAC clearance for tokunbo), vehicle licence, proof of ownership, and chassis number. Cross-check the chassis number on the paper with the one stamped on the car — usually under the bonnet or on the dashboard corner. If they don’t match, walk away immediately. Inspect the body: Look for uneven panel gaps, mismatched paint, or overspray on rubber seals — these are signs of accident repair. Run your hand along panels. Waves or rough textures mean filler (body filler used to hide dents). Check under the bonnet: Look for oil leaks around the engine, discoloured coolant (brown or milky means head gasket issues), and rust on the chassis frame. Start the engine cold — smoke from the exhaust on startup is a red flag. Test drive properly: Drive at low and high speed. Listen for knocking, vibrations, or pulling to one side. Test the AC, all windows, and all lights. Always bring a trusted mechanic. Pay them ₦5,000–₦10,000 for the inspection — it’s worth every kobo compared to buying a bad car. Avoid flooded cars: Check under the carpet and seats for watermarks or rust on the floor. Flooded cars have electrical problems that never fully go away.