Don’t Factory Immobilisers Already Do This?
All cars sold in the EU and UK since 1998 are required by law to have a factory-fitted immobiliser. For many years, this was considered a robust line of defence. That is no longer the case.
Modern theft methods, most notably relay attacks, OBD port hacking, and key programming devices purchased online, have rendered factory immobilisers largely ineffective against determined thieves. A relay attack, for instance, can trick the vehicle into thinking the key is present and allow it to start in under a minute, with no physical force required.
Factory immobilisers were designed for a different threat landscape. The threat has evolved; the factory immobiliser largely has not.
What Does an Aftermarket Immobiliser Actually Do?
An aftermarket immobiliser - specifically a Ghost immobiliser - adds a second, independent layer of protection that operates separately from the factory system.
With a Ghost immobiliser fitted, the driver must enter a unique PIN sequence using existing buttons inside the car before the vehicle can be driven. The engine may start, but the car will not move until the correct sequence has been entered. This means:
- A relay attack does not work — there is no RF signal to capture.
- Key cloning does not work — the clone cannot replicate the PIN.
- OBD port access does not work — the system is independent of the OBD.
There is nothing visible to remove or bypass — the Ghost has no external components.
What Does It Cost?
The cost of a Ghost immobiliser installation varies depending on the vehicle and the installer but is typically around 500 to 700 pounds including parts and professional fitting. This is a one-off investment with no subscription or ongoing fees. Set against the average cost of a vehicle, the premium on insurance excess and increased premiums after a claim, and the significant disruption of having a car stolen, the cost-benefit calculation tends to be straightforward for most vehicle owners.
Prices may vary by region, vehicle make/model, and any additional features required.
Does It Affect Insurance Premiums?
Many insurance providers view aftermarket immobilisers positively, and some will reduce premiums for vehicles fitted with TASSA or Thatcham recognised or equivalent security devices. It is worth contacting your insurer directly to understand their position before and after installation. In some cases, the savings in premiums over two to three years can offset the cost of the device.
Explore Ghost III - Digital CAN-FD Anti-Theft System
Will It Be a Nuisance to Use Day to Day?
This is a common concern, and a reasonable one. The answer for most drivers is: no. The PIN sequence is entered using buttons you already use in the car and becomes habitual within a few days of use. Many drivers report that they barely notice it after the first week.
The Ghost also includes a service mode and a valet mode, so you can hand the car over to a garage or valet without revealing your PIN or leaving the vehicle permanently immobilised.
Is It Suitable for My Vehicle?
Ghost immobilisers are compatible with a very wide range of vehicles across most major manufacturers. The Ghost-III, Autowatch’s latest model, is specifically designed for newer vehicles running high-speed CAN-FD networks, making it suitable for the latest generation of cars that older aftermarket devices cannot support. The best way to confirm compatibility is to speak with an approved Autowatch installer, who can advise based on your specific vehicle make, model, and year.
The Verdict: Is It Worth It?
For most vehicle owners, especially those with a newer, higher-value, or keyless-entry car, yes, a Ghost immobiliser is worth fitting. It addresses the most common and effective modern theft methods in a way that factory security and most other aftermarket solutions simply cannot.
The key considerations are:
- Your vehicle is likely at greater risk than you think, particularly if it has keyless entry.
- Factory immobilisers are not designed to counter relay attacks or key programming.
- The one-off cost is modest relative to the vehicle’s value and the cost of a claim.
- It does not negatively impact day-to-day use once you are familiar with it.
- It may reduce your insurance premium over time.
Protect your vehicle before it becomes a statistic. Find out more about the Autowatch Ghost immobiliser or contact us to locate an approved installer near you.