2012 MAZDA 3 I VIN JM1BL1L77C1535663

The Mazda 3 I described here left the factory in 2012. There is an automatic gearbox, with front-wheel drive. Power comes from a 2.0-litre petrol engine with four cylinders.

The record gives the mileage as 153,668 miles. Because the clock counts miles, any figure noted in kilometres has to be converted before the two can be compared. 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. Service invoices and inspection reports each carry a mileage figure, and lined up in order they show whether the clock tells the truth.

The record lists rear-end damage as the main problem on this car. 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.

A ‘runs and drives’ note means the car moved under its own power when it was checked. A key was there when the car was checked. Running condition describes a single moment, and standing or work done since can change it.

Title status in the record: salvage. At some point in its life, the car was declared a total loss. The structure and the quality of any work done deserve a thorough inspection on a car with a branded title, however sound the car looks.

A car’s history is everything logged against it since it left the factory: registrations and owners, inspections, repairs and insurance claims. 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.

An engine that has had its oil changed on time is far less likely to cause trouble later, and workshop invoices are the proof. Many modern petrol engines are turbocharged and direct-injected; where they are, the turbocharger and injectors belong on a specialist’s checklist. Automatic transmissions, CVTs included, are expensive to repair, so the test drive should include pulling away from a standstill and a stretch at motorway speed.

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. This car’s identification number is JM1BL1L77C1535663. Scratches, fresh paint or a replaced plate around the VIN markings are warning signs in their own right.

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 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 going any further with this Mazda 3 I, it makes sense to look up VIN JM1BL1L77C1535663.