Check Documents and Legality First

Paperwork is the most crucial part. Ensure the STNK and BPKB are original, tax is paid, and the purchase invoice and service book are available. Match the chassis and engine numbers in the documents with those on the physical car — a mismatch could mean a stolen vehicle.

Verify document validity at a Samsat office or via the e-Samsat service to ensure the car is not stolen, not blocked by electronic tickets, and not under a sale block. Avoid units with dubious documents no matter how cheap.

Detect Flood and Crash Damage

Flood-damaged cars are often sold cheap but carry big risks later. Signs include a musty cabin smell, rust under seats and the undercarriage, and mud in hidden areas. An inspector's trick: pull the seatbelt all the way out — dried dirt or a strong musty smell at the far end means water once entered the cabin.

For crash damage, check body panel gaps: door, hood, and trunk gaps must be even and precise. Watch for mismatched paint, filler marks, and bolts on the front fenders or hood with wrench scratches — factory bolts share the same color and show no tool marks.

Inspect the Engine, Odometer, and Always Test Drive

Start the engine and listen: a healthy engine sounds smooth and stable with no knocking. Check for oil or radiator leaks in the engine bay and normal exhaust smoke color. Low mileage is tempting, but don't trust it blindly — a 5-year-old car with only 20,000 km is suspicious unless genuinely rarely used. Also check steering texture and pedal rubber; worn-smooth surfaces indicate heavy use.

A test drive is mandatory. Feel the engine pull, gear shifts, braking, and suspension on various road conditions. Turn off the radio during the test drive so you can hear unusual noises from the undercarriage and transmission.

Transact Safely and Don't Fall for Cheap Prices

Prices far below market usually hide problems — or even signal fraud. Never transfer a down payment before seeing the car in person and inspecting it thoroughly. If the seller asks for a deposit, keep it reasonable and get valid proof of payment.

If you're not engine-savvy, bring a trusted mechanic or hire a professional used-car inspection service. Investing 1–2 hours in a deep inspection is far cheaper than an engine overhaul next month because you were scammed.