The Most Effective to Least Effective Vehicle Anti-Theft Devices (2025 Guide)

Vehicle theft continues to rise across Australia, and thieves are becoming more sophisticated—especially with key cloning, OBD hacking, and electronic bypass tools. Because of this, not all security devices are created equal. Some provide outstanding protection, while others only act as minor deterrents.

Below is a ranked breakdown of modern anti-theft options, from least effective to most effective. Clicking the links below will take you to pages showing what they are, how they work and pros/cons of each.

6. OBD Port Locks

5. Steering Wheel Lock (Clublock, Prolock, etc)

4. Factory Alarm Systems

3. Secondary Immobilisers (Kill Switch, Fuel Cut, Relay Controlled)

2. GPS Tracking Systems (with Immobilisation)

1. PIN-Code Immobilisers (IGLA 200/IGLA Alarm)