2010 MERCURY MARINER VIN 4M2CN8B79AKJ16787

The Mercury Mariner described here left the factory in 2010. The engine is a 2.5-litre petrol unit with four cylinders. Power reaches the wheels through an automatic gearbox. The specification is taken from the source data.

The recorded mileage is 189,296 miles. The figure is in miles and needs converting before it is compared with kilometres: one mile is about 1.6 km. Turning back an odometer takes little skill and leaves no visible trace, which is why earlier figures matter more than the display. Figures carry most weight when they come from independent sources: workshops, inspection stations and past title paperwork.

Primary damage in the record: front end. Whether the damage has been repaired since, and how well, is not something a damage entry can show. 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.

When checked, the car could be started and driven under its own power. A key was noted with the car. Months of standing can leave a car with seized brakes and perished tyres.

According to the source data, the car has a salvage title. A title like this is issued when repair was judged uneconomical or unsafe.

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. The paperwork is kept by different bodies – registries, workshops, insurance companies and lenders – so the history of one car is spread across many places. Much of a car’s past cannot be seen: a good body repair leaves no obvious mark, and neither do years of hard driving.

On a petrol engine, a rough idle, misfires or a warning light on the dashboard need looking into. The automatic gearbox should respond smoothly and without delay; jerks, slipping or hesitation on a test drive need investigating.

Stamped into the body and printed on a plate, the VIN is the one identifier that stays with a car through every owner, registration and repair. This car’s identification number is 4M2CN8B79AKJ16787. Scratches, fresh paint or a replaced plate around the VIN markings are warning signs in their own right.

Depending on what is on file, a VIN report may include past registrations, mileage readings, damage entries, branded titles and theft checks. A repair paid for in cash at a small workshop leaves no trace in any database, so no report can list it. 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. Before any decision, check what is known about VIN 4M2CN8B79AKJ16787.