2017 NISSAN SENTRA SV VIN 3N1AB7AP6HY310998

This entry is for a 2017 Nissan Sentra SV, finished in blue. The gearbox is automatic, with front-wheel drive. Power comes from a 1.8-litre petrol engine with four cylinders, rated at 130 hp. Every figure for this car is given as it appears in the source data.

The record gives the mileage as 105,737 miles. The figure is in miles and needs converting before it is compared with kilometres: one mile is about 1.6 km. Gaps of several years between logged figures deserve attention, as does any reading lower than the one before it. Title paperwork often notes the mileage at each change of owner, which makes it a useful cross-check.

Primary damage in the record: front end. The damage type is a short label: the extent of the damage and the quality of any repair still have to be judged on the car. Given the kind of damage entered, a mechanic should look first at the radiator support, the headlamp mountings and the front crash structure.

A car that does not run has to be moved on a trailer, and its real condition is known only after a thorough assessment. The engine started. A key was present.

The record shows a salvage title. A title of this kind usually means the car was written off as a total loss after damage. 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. A car’s paperwork is scattered: the registry knows about owners, the workshop about repairs and the insurance company about claims. From the outside, a car with a repaired accident and a car without one can look identical.

When a car does not run, a compression test and the condition of the oil tell a mechanic whether the engine can be brought back to life. Many modern petrol engines are turbocharged and direct-injected; where they are, the turbocharger and injectors belong on a specialist’s checklist. While the car does not run, stored fault codes and a look at the fluid are the only early evidence of how the automatic gearbox has fared.

The VIN is a 17-character code assigned at the factory: it identifies the manufacturer, the model and its variant, and ends with a serial number unique to the car. The VIN of this Nissan Sentra SV is 3N1AB7AP6HY310998. 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. The absence of an entry is not proof that nothing happened; it may only mean that nobody wrote it down. 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. A history check on VIN 3N1AB7AP6HY310998 is the place to start.