What to check when buying a used car

You are buying a history

Two used cars of the same year and mileage can be in completely different shape depending on who drove them and how. A car that looks spotless may have been in a major crash or a flood, while one with a few scratches may have been carefully maintained. So when you choose a used car, gather evidence about its history before you get attached to its looks or price. This guide covers the checks in order: paperwork, physical inspection, test drive, and contract. It does not recommend any seller or model, and it is wise to have a qualified mechanic inspect the car before you decide.

The budget is more than the price

When budgeting, add registration taxes and fees, insurance, and any wear items that will need replacing soon after purchase. If tires, brake pads, and the battery all come due at once, the surprise can be expensive. If you are financing, use a loan calculator to see the monthly payment and total interest. Cars at the same price can differ a lot in fuel economy, and over a few years that gap adds up, so a fuel cost calculator is worth using. Taxes and fees change with regulations, so confirm exact amounts with the relevant authority.

• Purchase price and registration costs
• Insurance, which varies widely by driver
• Wear items due for replacement soon
• Loan interest and fuel costs

Screen with paperwork first

A lot can be ruled out before you ever see the car. When buying from a dealer in Korea, ask for the condition and performance inspection report and check the damaged areas, replaced or repaired panels, and any leaks. The vehicle registration record shows changes of ownership and whether there are liens or seizures attached. A car with a lien or seizure can cause problems when transferring ownership, so make sure it has been cleared. Insurance industry accident history services show crashes that were handled through insurance. Repairs paid out of pocket will not appear, however, so a clean record does not prove the car was never in an accident.

What to look at in person

View the car on a clear day in good light. Look along the body at an angle to see whether the gaps between panels are even on both sides and whether any panel is a slightly different shade. Tool marks on the bolts inside the doors, trunk, or hood can mean those parts were removed. Check for oil leaks under the engine bay and on the ground, and see whether the tires are wearing evenly. Always compare the VIN stamped on the car with the one on the registration and inspection documents.

• Panel gaps and color differences
• Tool marks on bolts
• Leaks in the engine bay and underneath
• Tire wear and date codes
• VIN matching the documents

Avoiding flood-damaged cars

Flood damage is one of the histories you most want to avoid. Cars that sat in water tend to develop electrical faults over time, and rust works from the inside out. Notice whether the cabin smells musty or is masked by an unusually strong air freshener. Pull a seat belt all the way out and look for mud or water stains at the end. Check the seat rails, the area around the pedals, and the spare tire well under the trunk floor for rust or sand. Try each electrical feature one by one. If anything looks suspicious, reconsider no matter how good the price is.

What to check on the test drive

If possible, start the engine when it is completely cold. A car that has been warmed up in advance can hide cold-start problems. Listen for noise and vibration right after starting and watch the color of the exhaust. On the road, check that shifting is smooth, that the car tracks straight without the wheel pulling, and that braking is free of shudder or noise. Drive at low and high speeds and over some bumps to hear the suspension. Make sure no warning lights are on and that the air conditioning and heater work. Confirm the seller's consent and insurance coverage before the test drive, and drive carefully.

Final checks before signing

Once you find a car you like, have an independent mechanic inspect it if you can. The contract should spell out the vehicle details, price, delivery date, and how defects not listed in the inspection report will be handled. Get any verbal promises from the seller in writing so you have evidence if a dispute arises. Arrange payment so that the ownership transfer and handover happen together, and keep the bank transfer record. Handle the transfer and insurance right at handover so you are never driving uninsured.

If it is too cheap, ask why

A listing that is noticeably cheaper than similar cars usually has a reason. It might have a major accident or flood history, a lien, paperwork problems, or it may be a bait listing for a car that does not exist. Never send a deposit before you have seen the actual car. This guide outlines a general order of checks. For legal procedures, costs, and consumer protection rules, see official guidance from the relevant authority and consumer agencies. If a dispute arises, seek help from a consumer agency or a legal professional rather than trying to handle it alone.