2008 CADILLAC DTS VIN 1G6KD57928U150066

This Cadillac DTS is a 2008 model, finished in red. The engine is a 4.6-litre petrol unit with eight cylinders. There is an automatic gearbox, with front-wheel drive.

The clock stood at 102,055 miles when the data was entered. A single figure proves little: what makes a mileage believable is a series of readings that rise steadily over the years. Title paperwork often notes the mileage at each change of owner, which makes it a useful cross-check.

The record lists mechanical damage as the main problem on this car. A damage entry is a starting point for the inspection, telling the mechanic where to look first. Damage rarely stays where it is first seen: an impact can reach the mountings and airbags behind a panel, and water or fire the wiring and electronics.

The car is recorded as running and driving. A key was there when the car was checked. Months of standing can leave a car with seized brakes and perished tyres.

The car carries a clean title. There is no salvage or similar mark, so the car was never recorded as a total loss.

A car’s history is the sum of what has happened to it since it was new, and most of it has left a trace on paper somewhere. Pieces of a car’s history sit with registries, dealers, workshops and insurance companies, and none of them sees the whole picture. From the outside, a car with a repaired accident and a car without one can look identical.

On a petrol engine, spark plugs, ignition coils and the cooling system are the routine items a service history should cover. The automatic gearbox needs its fluid changed at the manufacturer’s intervals, and invoices should show that it was.

The ninth character of the VIN is a check digit calculated from the other sixteen, so a mistyped or invented number does not add up. This car’s identification number is 1G6KD57928U150066. The number in the car’s documents should match the one stamped into the body and the one on the plate at the base of the windscreen.

Where entries exist, a VIN check can show changes of owner, past mileage readings, reported damage and whether the car is listed as stolen. Paperwork is only as complete as the people who kept it, so a report with few entries lowers the risk without removing it. A VIN check and a physical inspection answer different questions: the first says what happened to the car, the second what condition it is in now. A history check on VIN 1G6KD57928U150066 is the place to start.