How to Check Vehicle Information When Buying a Used Car?

[McClaire]

When buying a used car, you can check the vehicle information through the Traffic Management 12123 app. Here are the precautions for purchasing a used car: 1. Check the vehicle license: Verify whether the patterns on the front and back pages of the license match when combined, and check if the license photo and chassis number match the vehicle. 2. Check the vehicle insurance: Confirm that the chassis number and engine number on the insurance policy match those on the vehicle license, and ensure the insurance is still valid. 3. Check the vehicle registration certificate: Inspect whether the font on the registration certificate matches that on the vehicle license, and verify that the chassis number and engine number are identical to those on the license. Check if the manufacturing date and registration date align with the dealer's description, and review the registration history for frequent transfers within a short period.

[McSavannah]

When I bought a used car before, I focused on three types of information: the car's history, accident and maintenance records, and the actual condition. First, I asked the seller to show the vehicle license and registration certificate to verify if the VIN and engine number matched. Then, I checked the production date to see if it was an inventory car or nearing scrapping. Maintenance records were especially crucial—I spent over 30 yuan on a third-party mini-program on WeChat to get a full report, paying close attention to major repair records and insurance claim amounts. When inspecting the car, I brought along an experienced mechanic who peeled back the door seals to check weld points, examined chassis rust, and even discovered that the right front door had been replaced—something the seller hadn’t mentioned. Finally, checking the 4S service records revealed a transmission replacement at 50,000 km, which helped me negotiate a 20,000-yuan discount. The used car market is full of pitfalls, and closing the information gap is key to saving money.

[JosephAnn]

As someone who just bought a used car, I found third-party inspection reports to be the most useful for checking information. Before scheduling a test drive, make sure to review the accident history. A friend of mine encountered a car with deployed airbags that weren't recorded, resulting in an inflated price by over 20,000 yuan. This time, when I used a mobile app to check the maintenance history by entering the VIN, I paid special attention to any major engine overhauls. Upon spotting an unresolved recall notice, I immediately switched to another car option. For the physical inspection, bring a high-power flashlight to check for inconsistencies in paint reflection—rust on seat rails could indicate flood damage. Don't forget to check for traffic violations to avoid inheriting someone else's fines, and ensure the seller clears all penalties before transferring ownership. Only after verifying all this information can you negotiate the price with peace of mind—the savings could cover half a year's worth of fuel.

[MartinRose]

When checking a used car, focus on four main aspects: verify the authenticity of the vehicle's records by cross-checking the registration certificate and the vehicle license for any inconsistencies; examine the maintenance history by reviewing both the insurance claim records and the dealership service logs for complementary information; ensure all traffic violation fines have been settled; and conduct a thorough physical inspection, paying special attention to oil leaks in the engine compartment and uneven tire wear. I usually research common issues beforehand—for instance, with certain German cars known for oil leaks around 80,000 kilometers, I make sure to check for oil stains under the chassis. When information is scarce, visiting multiple repair shops to inquire about common problems with the same model can be helpful, as dealers often hide odometer rollbacks.

[ValentinaFitz]

Last time I helped a relative choose a used car, I insisted on thoroughly checking the vehicle's background information first. The key was to pay for a full maintenance and repair record check through a third-party platform. If there were three rear-end collision claims, I would walk away immediately. Finding a deformed subframe during the chassis inspection is also a sign of a major accident, something sellers would never mention voluntarily. If the production dates of the car's glass differ by more than two years, be wary of replaced parts. Water accumulation in the spare tire well could indicate flood damage. Starting the engine and listening for crisp valve sounds is crucial—a friend ended up spending an extra 8,000 yuan on repairs because they didn’t check this and bought a car that needed a camshaft replacement. Vehicle information is like a puzzle; you need to verify each piece to feel at ease.

[MacGrace]

When buying a used car, check information carefully: First, check the free traffic management app 12123 for violation records, then spend a small amount on Alipay to check maintenance records for major repair frequency. Once, I found the transmission had been replaced three times in five years and negotiated a price cut of 12,000 yuan. During the physical inspection, use a magnet to check the thickness of body filler, turn on the AC to smell for mustiness in the evaporator to detect flood damage. Pull seatbelts all the way out to check for water stains, and feel the corners of the spare tire well for sediment. If information is unclear, ask the owner to sign a no-major-accident pledge, allowing claims for breaches. These tips helped me avoid four problematic cars, saving over 2,000 yuan compared to a full inspection.