Best for: thorough protection against vehicle theft + teenage drivers

Where most other GPS trackers tell you where your car is, the Carlock Anti-Theft Device tells you what it does.

This OBD-based device gives detailed information on how the car is being driven – for instance, it can send a notification when the driver brakes or accelerates abnormally quickly. It lends itself well to ensuring young or inexperienced drivers are driving safely.

In practice, this allows for in-depth remote surveillance of the vehicle’s activity, via a connected app. You’ll get alerts when the vehicle brakes suddenly when it corners sharply (which may indicate that car theft or “stunt driving” has taken place), and even when the engine is started – so you can get an early warning if the car has been stolen.

The £5.95/month subscription cost of the Carlock Anti-Theft Device is £1 cheaper than the rate charged on the same product in 2018. Nonetheless, it’s a bit steep.