Many manufacturers use the same supplier and often the same components. Some products have additional components from 2nd tier suppliers. Whilst some cases of failure are inherently different due to the differing applications and packaging, there are many that are the same cause.

All vehicle fires or potential defects should be reported to the manufacturer and investigated by them using experienced and qualified fire or defect engineers together with an insurer-instructed experienced forensic engineer. Manufacturers are obliged to ensure their customers are not using vehicles that may be dangerous. Each incident traumatises customers and leaves them and their insurers out of pocket. If the causation is due to a vehicle or design defect, the manufacturer must accept full liability.

Due to the possible complexities of any defect or fire forensic investigation, it cannot be overstated that an experienced engineer should be instructed in all viable cases.