Black Box Insurance Explained: Is It Worth It?
Updated 16 October 2026 · 6 min read
How does telematics (black box) car insurance work, who saves most, and what are the downsides? Our plain-English guide.
Key takeaways
- A device or app scores your driving and can lower your renewal price.
- Best for young and new drivers who drive carefully.
- Check curfews, mileage caps and penalties before signing up.
This guide is part of our full guide to car insurance for young and new drivers. You may also find these useful: how does black box insurance calculate your score? and how to get the cheapest car insurance for young drivers.
How it works
A black box fitted to your car, a plug-in device or a smartphone app records how you drive: speed, braking, acceleration, cornering and the times you're on the road. The insurer uses this data to judge your risk.
Who it suits
Telematics is most valuable for drivers with little history — mainly under-25s — because it lets you prove you're safer than your age group suggests.
Possible downsides
Read the terms carefully:
- Some policies have night-time curfews.
- Poor scores can lead to higher prices or cancellation.
- Mileage limits may apply.
- Not every insurer offers telematics for every car.
Tips for a good score
Brake gently, keep to limits, avoid late-night driving where you can and plan routes to cut stop-start traffic.
This guide is general information, not financial advice.