2021 CADILLAC CT4 LUXURY VIN 1G6DJ5RK0M0148206

The Cadillac CT4 Luxury described here left the factory in 2021. Power reaches the wheels through an automatic gearbox. Power comes from a 2.0-litre petrol engine with four cylinders.

Services and inspections note the distance covered, so a car with an ordinary past builds up a trail of figures that climb year after year. A service book or a folder of workshop invoices is the simplest place to find past readings.

In the source data, the main issue is front-end damage. A damage type says what kind of damage the car had, not how serious it was or whether it has been repaired since. Whatever the cause, a diagnostic scan of the car’s electronics shows fault codes that a visual check misses.

A note in the source data says the car did not run. The engine started, but that says nothing yet about the gearbox or the drive to the wheels. A key was noted with the car. Condition notes are a snapshot: the car may have been worked on, stripped of parts or left standing since.

The car carries a salvage title. A title like this is issued when repair was judged uneconomical or unsafe. Once issued, a branded title stays with the VIN for good, and it affects registration and insurance for every later owner.

A car’s history answers three questions: who kept it, how it was looked after and what went wrong along the way. No single office holds the whole story of a car: registries, workshops, insurance companies and lenders each keep their own part. Much of a car’s past cannot be seen: a good body repair leaves no obvious mark, and neither do years of hard driving.

Regular oil changes and timely work on the timing belt or chain decide how well an engine copes with age. On a petrol engine, spark plugs, ignition coils and the cooling system are the routine items a service history should cover. With no test drive possible, the automatic gearbox has to be assessed on a lift and with diagnostic equipment.

A VIN never contains the letters I, O or Q, which could be mistaken for digits; its 17 characters identify the maker, the model and the individual car. For this car, the VIN is 1G6DJ5RK0M0148206.

Where entries exist, a VIN check can show changes of owner, past mileage readings, reported damage and whether the car is listed as stolen. A professional inspection makes sense whatever the paperwork shows, because no report measures corrosion, worn bushes or a poor repair. A history check on VIN 1G6DJ5RK0M0148206 is the place to start.