What tools and tools are needed to test used cars?
Strongest Artifact: Powerful Flashlight
Most Intuitive: Paint Film Gauge
Packaging artifact: obd
The most obvious: machine stethoscope
Highlight: motorized endoscope
Nothing beats eighteen touches of a golden finger
In fact, an experienced used car appraiser only needs a flashlight.
I think the paint film meter is too bloated to be used as a utility tool, but I don't think it will work if you rely on it completely. Firstly, the prices for meters of paint film vary from more than a hundred to several tens of thousands. Nothing but speed and accuracy. If your paint meter isn't fast or accurate, an experienced used car appraiser has already inspected the entire car before you finish beeping in two faces. Second, the paint gauge can only measure thickness and has nothing to do with changing paint. Thus, the identification of the paint surface must be evaluated comprehensively based on various factors. Such as screw marks, gap size, paint quality, and even some details such as adhesive and small labels.
OBD can only be used as an auxiliary tool. To evaluate the transmission, experience is much faster than data. We may not have so much time for you to install instruments one by one when rolling a car, so first pass Look and listen to see whether the transmission has abnormal conditions such as oil leakage, vibration, abnormal noise, etc., and then comprehensively analyze it according to OBD.
Combined with the above, when evaluating a used car, the most important thing is to see, hear and touch. The tool can only be used as an auxiliary tool forever. If you look at the tool, it is easy to be misled by incorrect data.
Used car buyers often have concerns such as buying a car that has been in an accident, buying a car with a potential safety hazard, buying a car that doesn't live up to the seller's promises, etc. The root of these concerns lies in current deals with used cars. The state of the car is opaque. So, how should consumers fully understand the vehicle they are about to purchase when buying a used car? What are the checkpoints for used cars?
According to the certification standards of some domestic car manufacturers, there are usually hundreds of used car inspection points, but the main categories are as follows:
Body structural elements: front anti-collision beam, energy absorbing box, front spar beam, water tank frame, fender liner (left and right sides), left and right shock absorbers, fire wall, A.B.C struts (left and right sides), upper side beam, lower side beam (left and right side), large roof, left and right rear fender, rear anti-collision steel beams, energy-absorbing boxes, rear panels, rear longitudinale beams, niches for a spare wheel,
Protective parts: front and rear bumpers, front and rear lights, engine cover, front fenders, front, rear, left and right doors, rear trunk lid, one-piece car glass, four tires, brake pads, brake drives,
Check whether the engine, gearbox and working conditions are normal, raise the chassis to see if there is oil leakage, disassembly and repair marks, bottoming phenomenon, shock absorber oil leakage, suspension rubber cracking and deformation. sleeve, fuel tank, pipe Is the track in good condition,
Internal inspection: air conditioning, airbags, seat belts, seat bottoms, handrails, steering columns, floors, roof, kilometers, steering wheel wear, sunroof, all electronics,
Vehicle procedures: registration certificate, driver's license, insurance policy, invoice, tax certificate, etc.
This is mainly the elimination of accidents, floods, fires, meter adjustment, repairs, formalities and other problematic vehicles.