2011 CADILLAC STS RWD W/1SB VIN 1G6DW6ED7B0157190

The Cadillac STS RWD described here left the factory in 2011. The gearbox is automatic. The engine is a 3.6-litre petrol unit with six cylinders. Every figure for this car is given as it appears in the source data.

At the time of recording, the car had covered 178,176 miles. The figure is in miles and needs converting before it is compared with kilometres: one mile is about 1.6 km. The number on the clock proves little by itself; earlier figures logged at services and inspections are what make it believable. Service invoices and inspection reports each carry a mileage figure, and lined up in order they show whether the clock tells the truth.

The source data names no primary damage. That shows only that none was entered, so the body still deserves a close look. Paint depth, panel gaps and the underbody show whether the body has been repaired.

A key is on file for the car. A condition note describes the car at one moment; months of standing or later work on the car can change the picture in either direction.

The car carries a clean title. Nothing on the title points to a total loss or a flood.

Every car builds up a history from the day it is first registered: owners come and go, inspections are passed or failed, and repairs are paid for. From the outside, a car with a repaired accident and a car without one can look identical.

An engine that has had its oil changed on time is far less likely to cause trouble later, and workshop invoices are the proof. A petrol engine in good order starts cleanly, idles evenly and pulls without hesitation. The automatic gearbox should respond smoothly and without delay; jerks, slipping or hesitation on a test drive need investigating.

A vehicle identification number has 17 characters: the first three name the manufacturer, the next six describe the model and its specification, and the last eight identify the individual car. For this car, the VIN is 1G6DW6ED7B0157190. A VIN that differs between the documents and the car, or shows signs of tampering, is reason enough to walk away.

What a history report can list depends on what has been documented about the car: registrations, mileage readings, damage, branded titles and theft reports. No report is complete: a repair done privately and never claimed on insurance leaves nothing to find. A history report says nothing about the car’s present condition: the frame, corrosion, electrics and the quality of any repair are judged on a lift by a mechanic. The next step is to look up the history behind VIN 1G6DW6ED7B0157190.