Can insurers tell if remapped?

From the initial technical standpoint, there are no central databases or records; the DVLA or police are not notified of such modifications. So, on face value, there is no clear method of knowing a vehicle has been remapped.

However, insurers do have the ability to detect an ECU remap if they choose to fully investigate following such events as an accident or a claim. They certainly have the ability to approach ECU remapping companies to determine whether a vehicle has been tuned. Whilst some companies decline this work on principle, others do not. This means there is a real possibility your remap will be detected if an insurer wishes to pursue it.

Remember, it is your legal responsibility to disclose your remap to your insurer, regardless of whether they can or cannot detect it. Non-declarations are considered material misrepresentations, which can invalidate your policy entirely, and in the event of a claim, can leave you personally liable for costs.

Overall, it is pretty straightforward. Declare your ECU remap. Most insurance companies now recognise remapping as a standard upgrade, which may result in a small premium increase; if not, there are dedicated brokers that can help, such as Adrian Flux.