
Methods to distinguish whether a car is a stock vehicle: 1. Check the manufacturing date of the car. Each car has a nameplate near the door that clearly indicates the manufacturing date. If the car was manufactured within the last three months, it is considered new; otherwise, it is likely a stock vehicle. 2. Look at the time symbols on the car windows. The markings represent the manufacturing date of the glass. If they are inconsistent, it means one piece has been replaced. 3. Check the wear level of the tires. New tires have a layer of tread hairs when they leave the factory, which wear off easily. You can check if all four tires still have these tread hairs. 4. Use your finger to feel the inside of the exhaust pipe. If there is obvious black residue, it indicates the car has been driven for some time. If the color is light, there is no issue.

I think the most straightforward way to identify a stock car is to check the vehicle's production date, which is usually indicated on a nameplate below the B-pillar on the passenger side or in the engine compartment. If the car has been in stock for more than six months without being sold, it's considered a stock car, especially for less popular models where this situation is quite common. You can crouch down and check the tires—cars stored for a long time often have flat spots on the tires, and the rubber may show fine cracks. Also, remember to bring a wet wipe to clean the screws in the engine compartment, as poorly maintained stock cars tend to accumulate thick dust, and you might even find rodent droppings. The most crucial thing is to check the condition—long-term storage leads to low battery voltage, and you can feel a delay when starting the engine. I once encountered a dealer who disconnected the dashboard wires to show zero kilometers, but upon checking the maintenance records, the car had already passed its first service interval.

Last time I helped my younger brother look at cars, I paid special attention to this point and taught him a few simple methods: First, check the vehicle's VIN number—the 10th digit letter represents the year, and anything over two years is definitely considered old inventory. Pop the hood and check the engine oil; if it's black and sticky, it's been sitting for a long time. Sit in the driver's seat and take a whiff—cars that have been parked for extended periods will have a musty smell from the leather seats, especially noticeable when the AC is turned on. Press the door seals with your fingernail; if they're aged, they'll turn white and won't spring back. Also, check the spare tire in the trunk—tires that have been under prolonged weight will have deformed treads. It's best to inspect the car on a rainy day; wipers on inventory cars will skip because the rubber has hardened. When negotiating the price, remember to calculate based on the months it's been stored—deduct at least 2,000 yuan for each additional month.

Key checks in three areas: Don't trust what the salesperson says about the nameplate date, squat down and check it yourself for the most accurate reading. Pull out the dipstick to observe - new car oil should be transparent light yellow. After powering on, check the odometer reading; be cautious if it exceeds 50 km. Inspect brake disc rust - frequently moved cars only have slight surface rust. Note that the production dates of glass and tires should be earlier than the whole vehicle's date; if the difference is too large, there may be an issue.

As someone who frequently helps friends inspect cars, the most obvious sign of a stock car is brittle plastic parts. Open and close the glove compartment a few times to listen—new ones operate smoothly, while long-stocked ones will make a creaking sound. Pull out all the seatbelts to check; those kept under prolonged tension will show stretching marks. Look for small stones in the tire tread grooves—unused cars are particularly clean. After starting the engine, shift gears to feel for any jerking; settled transmission fluid can cause rough shifting. Pay special attention to the radiator gaps—those clogged with dust and lint have definitely been parked for a long time. Finally, inspect the onboard tool kit; wrenches stored for extended periods will have rust.


