BuySecond-hand vehiclesIn this case, it's ostensibly eyework and at the bottom it's information symmetry. A lot of people look at cars with their paints on, their interiors on, and their appearances on, and it turns out that three months later, the engine leaks, the gearbox breaks, and the airbag lights are on — and it is often too late to look back and ask, “what has happened to this car before” 。
Those who really know how to do it must do one thing first: look at history。
And the first mistake of "the history" is to putIntersection 12123"as a key to all. It does have authority, but the limits of its capabilities are very clear - it can tell you whether the vehicle was handled by the traffic police, the current state of inspection, the state of collateral, the record of violations, but it can't find that you did several maintenances at the 4s store, changed several tyres. Come onInsurance claimsHow much did you lose? Using 12123 as a protection database is the first mine a rookie can most easily step on。
The article is not water-filled, it is not terminological, it is detached from the engineering perspective, from the trade perspective, from the data perspective: 12123 can find out exactly what, what, what, and the four authoritative channels that really need to be used before buying a car, how to cross-check, how to read a report, how to avoid a pit。
First conclusion: 12123 is a “floor verification” and not a “full vehicle”
The data from the central system for the management of public security traffic is not authoritative. However, it collects “management events”, not “maintenance events”。
Available:
Basic motor vehicle state (normal/seizure/collateral/untreated)
Validity check, annual check
Information on traffic accidents filed with the intervention of the traffic police
Progress and outcome of the determination of liability for the incident
Number of miles registered at the annual review for some years (as a checkout)
Untraceable:
Daily maintenance records (alteration, brakes, gear tank oil)
Maintenance records for non-accident types (paints, gold, lights change)
The insurance policy
The one who didn't call the police had an accident
Maintenance files at the roadside workshop
Qualification: 12123 is the initial screening of the “does the car have an official black history” and not a medical report of “is the car healthy”。
So the correct use is to open 12123 to the background and complete the résumés through the following four channels。
Channel 1: platform for public security intersection and government (official background, free but limited)
1. Intersection 12123 app
The vehicles will be bound by their actual names and will focus on two entry points:
Motor vehicle plates: state check, validity check, collateral, record-keeping
“procedures and results of incident disposal”: to see if there are traffic police-specified incidents
The value lies in “not tampering with”. The information on the length of the annual inspection, the setting up of the case is official, and evidence is effective when defending rights。
2. Local government/public security used vehicle search platform
Some provinces have been able to access the data. For example, the second-hand vehicle trading information platform, set up by jiangxieto, consolidates public security traffic, insurance claims and multi-dimensional data on vehicle maintenance, which can be refined to the maintenance area, cause of maintenance, number of claims, and displays the status of the car in four colours of blue orange。
The significance of such platforms is that, in the past, three systems of traffic, insurance and maintenance did not speak to each other, and now “on-line portraits”. It needs to be noted, however, that not all municipalities in the country are currently open to the same level of granulation, prior to checking whether your province has a similar entrance to government。
3. Underline window of the car station
The scenes are suitable for “papers with official seals”: notarization of transactions, forensics, acquisition of large used vehicles. With identity cards, travel permits and authorizations for non-owners, they can apply for access to file files。
A reminder from the engineering perspective: this is a “legal identity” rather than a “mechanical state”. The fact that the frame was uncut, unsealed and unrecorded did not mean that the engine had not been repaired。
Channel ii: insurance companies and silver bonds (the “original book” of risk records)
Risk recording is the data source at the core of the determination of the accident vehicle. Because, as long as insurance is in place, there are purchase orders, settlement amounts, maintenance projects, type of accident - this information is originally entered by insurance companies and is highly credible。
1. China silver guarantee vehicle risk information platform
This is currently the strongest official channel for cross-company integration. The consolidation of data on claims processed by domestic financial insurance companies and the theoretical ability of a vehicle, regardless of the number of insurance companies, to produce a full-cycle risk file: accident time, settlement amount, maintenance area, type of accident (crash/water flooding/fire)。
Operating path: silver bonds official public name authentication → kidnapping car → losing vin check history policy and settlement。
2. Direct inspection by single insurance companies
If you know that the car used to be insured, safe, safe in the pacific ocean, to call the official bus service, to call the frame number plus the owner's authorization, you can get the details of the company's insurance cycle。
The disadvantage is also obvious: you have to make three phone calls when you change three insurance companies. And private, cash maintenance, uninsured accidents that cannot be detected here。
3. Read the risk report and look at the five fields
Getting the report doesn't just look at "a few times at risk," it depends on the structure:
Type of accident: tailings, side bumps, flooding, burning, high-altitude crash, completely different in nature
Amount of compensation to be paid: a single large amount of compensation (particularly close to a certain percentage of the cost of the car) to be vigilant against structural damage
Maintenance units: vertical beams, abc columns, shock-mitigation towers, airbags, seatbelt pre-heats -- either of which appears, is a major accident vehicle signal
Frequency: more than three collisions a year, driving habits or car condition per se
Total loss mark: cars with a “presumption of total loss” record, not at any cost
In the event of an accident, the squirt will leave behind such keywords as “water-related insurance” “engine entering” “line-beam replacement” “seat-wire replacement”; the fire truck will “overfire” “line melting”. Once they appear, they are not “minor problems” but “systematic hazards”。
Channel iii: brand 4s and the official system for motor enterprises (stort 4s)Protection records“the original plant floor”)
Protection records are “health files” of vehicles. It is not necessarily capable of exposing accidents (because the accident may have gone to an out-of-insure repair plant), but it can reveal three things: whether maintenance is regular, whether the mileage is real and whether the same parts are frequently repaired。
1. Branding authorization for 4s
The entry records within the brand system are checked when the identification card and the driving pass are sold to the corresponding brand 4s store. See:
Every time you come in, every time you register
Maintenance project, replacement accessories
Description of failure maintenance
Quality status
Limitations: coverage of records only “in this brand system”. Once the vehicle had been removed from the 4s shop and put on a roadside stall, the data was broken。
2. Official app/car owner centre
In the mainstream brands of the public, toyota, bmw, tesla, etc., the original owner of the vehicle will synchronize the data with the car cloud after the official app has bound the vehicle. The vehicle is purchased with temporary authorization from the original owner, or, upon transfer, with access to the original plant maintenance cycle and maintenance log。
What about the protection report? Read
The focus is not on whether there is a record, but on whether the record is reasonable:
Incremental logic: 30,000 last year, 28,000 this year, directly adjusted
Maintenance interval: unmaintenance sudden concentration for “big maintenance”, possibly pre-sale packaging
Repeated maintenance: 3 repairs to the same gearbox, indicating general or dark disease
Unusual fittings: short-term water exchange tanks + large lights + condensers with an approximate impact
Water bubble signal: interior decorating, carpet replacement, seat slide replacement, line replacement - cross-cutting with risk record look
From the engineering point of view, the failure of the security record is not equal to a car's condition, but may be a “deprivation maintenance”; however, the security record is complete and unusual and essentially a solid hammer。
Channel iv: compliance third-party integrated platform + live obd testing (last two pieces of puzzle)
The first three are “official originals”, the third is “original plant bottom” and the fourth is “integrated view + physical validation”。
1. Compliance third-party vehicle status platform
Enter a vin or upload a driver's permit and perform a comprehensive report for dozens of seconds, combining risk, protection, mileage, configuration, number of household transfers, battery health (new energy)。
Pick a platform to see four points:
Whether or not data sources are disclosed (silver bond/insurance company/4s/transfer)
Whether cross-references are supported (mile curve, adventure node)
Whether conclusions are given without detail (just say "good/poor" carefully)
Whether the privacy protocol is clear or not, don't stick id photos to an unknown program
The value of third-party reports is “screening”, not “conviction”. It tells you "where there is doubt," not to check your car yourself。
2. Obd live read
Qualified testing facilities, diagnostic machines, trucks, engine reading, speedbox reading, internal storage mileage in abs control units. The dashboard can be tuned, the original meter in the euu can't。
This step is dedicated to the “clean but wrong record” fine-tuning car。
3. Third-party manual testing
299/599/999 different packages, focusing on structural components: front and back, upper and lower beams, abcd columns, firewalls - dozens of accident detections to determine the presence of cutting, welding and deformation。
New energy also needs to be added: battery soh (health), three power maintenance records, heat out of control history. Batteries are removed, modules are changed, soh is below a certain threshold and the residual value is recalculated。
Vi. Throughting the three line into one : the role of active transfer
Looking at any channel alone could be deceived. The real profession is triangulation:
Validity of mileage = annual miles tested + 4sd + insured loss + obd internal mileage
Four sets are not match。
Accident authenticity = 12123 filed + insurance risk + 4s maintenance description + actual vehicle structure test
12123 was not recorded, but the insurance had a large settlement of +4s and maintenance of the beams, indicating that “private or only insurance had not been reported to the police”, in the same case, an accident vehicle。
Squirt/fire = risk keyword + vbd + car smell interior/wire-beam oxidation
Three companies are recorded for “water-related risk plus interior decoupling + wire beam replacement” and no real car can be found。
New energy = battery soh + three power repair + risk type + backstage data
The table shows a good continuation, but soh fell to the top of 70 per cent, had a battery package replacement record, and the cut-off space was based on the “exchange cost”。
Transactions: the word “discovered” becomes the word “contract”
Record-taking is not the end point, but evidence of bargaining chips and rights defence。
Requirers/individuals to provide: third-party testing reports + preservation records + risk records
The contract was written: no major incident, no bubble water, no fire, real mileage, no collateral seal
Vin, registration, number of transfers, configuration version
Leave communication records, invoices, payment vouchers, original inspection reports
The seller's concealment of the true condition of the car constituted a fraud under the second-hand car circulation management scheme and the decoying method, and the buyer had the right to return the car and claim compensation. In recent years, jiangxi, suzhou, chaoqing and others have issued clear instructions that used car transactions must be transparent and verbally promised。
Viii. Several anti-intuitive cognitive biases
"no risk," "no harm."
Private, cash repairs, no calls, no insurance records, but welded the beams long ago。
"all 4s maintenance" ≠ "car's in good condition"
The maintenance service is only an indication of the perner's upper hand and does not mean that he has not been in water. Water trucks can also change oil every 5,000 kilometres。
"show 30,000 km" and "real 30,000."
The fine-tuning watch car can now turn the instrument, middle control, and airlights to low mileage, but the eu and the year's review will not accompany。
"third party reported quest car" "no field inspection"
The report is a long-range screening, and it is the chassis on a live lift that is final。
"12123 clean" pips "may be bought with closed eyes"
It only proved that “no case was opened by the traffic police” and that “no access to the repair plant”。
Ix. Queries for different scenarios
Personally, 5-15 million cars
12123 + silver letters at risk + brand 4s-wide + third party synthesis report. Cost is manageable, covering 90 per cent of pits。
Buying 200,000 to 500,000 new used vehicles
The complete set of + obd reading mileage above + third-party manual testing (class 599) + contract writing death status commitment。
New energy (especially second-hand driving)
Garza: batteries soh, trielectric maintenance, replacement logs for intellectual driving hardware, backstage mileage. Smart driving modules have been replaced and marked out, and later hazards are more problematic than engine leaks。
Purchase of million-class luxury/old car
Wire-departure pipe shift + original plant security export + professional technician lift test + insurance cycle-by-cycle. Such repairs could cost hundreds of thousands of dollars at a time, depending on the cost of searching。
At the end: the nature of the record is to buy “uncertainty management”
Cars can't buy second-hand, they can't buy blindly。
The new car sells configurations, parameters, brand premiums; the second-hand car sells “the past” — who used to drive, crashes, fixes, miles are not real, batteries fail. The sales won't tell you, the paint won't tell you, the dashboard will lie。
12123 is the starting point, not the end point。
Each of the four authoritative channels covers one paragraph: the “identity” of the transfer, the “accidental account” of the insurance, the “health book” of the 4s, the “mixing and validation” of the third party + the physical pipe。
Understanding, reading, cutting prices, leaving evidence — this is the only watershed between professional buyers and the wrongs。
Next time you look at a car, don't rush the wheel. First take out the phone, lose the vin, get it out of the first half of the life and show it in the light. Cars don't talk, but data will。
