2018 MAZDA MAZDA3 SPORT VIN 3MZBN1U78JM165684

The Mazda MAZDA3 Sport described here left the factory in 2018. Power comes from a 2.0-litre petrol engine with four cylinders. The gearbox is automatic, with front-wheel drive. Every figure for this car is given as it appears in the source data.

The source data puts the mileage at 99,098 miles. Gaps of several years between logged figures deserve attention, as does any reading lower than the one before it. 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. Whether the damage has been repaired since, and how well, is not something a damage entry can show. Whatever the cause, a diagnostic scan of the car’s electronics shows fault codes that a visual check misses.

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 would not start, which can mean anything from a flat battery to serious mechanical damage. No key is recorded with the car, and a replacement has to be coded to the immobiliser.

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 branded title follows the car through every change of owner, so it remains part of its history.

Every car builds up a history from the day it is first registered: owners come and go, inspections are passed or failed, and repairs are paid for. No single office holds the whole story of a car: registries, workshops, insurance companies and lenders each keep their own part. 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. 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 history check works by VIN because the number never changes, unlike registration plates and owners. The VIN on file for this car is 3MZBN1U78JM165684. 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 professional inspection makes sense whatever the paperwork shows, because no report measures corrosion, worn bushes or a poor repair. Before any decision, check what is known about VIN 3MZBN1U78JM165684.