What May Help Deter a Thief from Stealing Your Car - 12 Easy Tips

Deterring a car thief usually comes down to layering several simple, low-cost habits with a bit of smart technology, rather than relying on one single fix.

12 Tips On How to Deter a Thief From Stealing Your Car

Car theft has evolved well beyond the smash-and-grab tactics of years past, with keyless relay attacks and CAN bus exploits now among the biggest threats UK drivers face. The good news is that a combination of smart habits and the right technology can make your car a far less appealing target, so here are 12 practical ways to keep thieves at bay.

1. Always Lock Your Car, Even On The Driveway

It sounds obvious, but a surprising number of thefts happen simply because a door was left unlocked or a car was left running to defrost on a cold morning. Get into the habit of double-checking your doors and never leaving the engine idling unattended, even for thirty seconds outside your own house.

2. Park In Well-Lit, Overlooked Areas

Thieves prefer working in the dark and out of sight, so parking under a working streetlight or somewhere with natural foot traffic makes your car a far less appealing target. If you have off-street parking, use it, and if you're relying on the street, try to avoid quiet corners or areas with poor visibility.

3. Fit A Steering Wheel Lock

A visible steering wheel lock is one of the oldest deterrents in the book, and it still works because it adds friction and time, two things opportunist thieves want to avoid. It won't stop a determined professional, but it's a strong visual signal that your car isn't an easy target.

4. Use A Faraday Pouch For Keyless Fobs

Keyless entry systems have made relay attacks far more common, where criminals use two devices to capture your fob's signal through your front door and relay it to your car parked outside. Storing your key fob in a signal-blocking Faraday pouch overnight stops that signal being intercepted, and it's one of the cheapest, most effective habits you can adopt.

5. Consider A CAN Bus Immobiliser

Modern car thieves increasingly target the vehicle's CAN bus network, the internal system that lets all its electronics communicate, using diagnostic tools plugged into the OBD port to bypass factory security. 

A CAN bus immobiliser, like GPSBob's Casper range, connects directly into this network and requires a secret sequence or proximity tag before the engine will run, rendering key cloning and relay attacks completely ineffective since there's no signal to intercept in the first place. 

GPSBob's car immobilisers are designed specifically to counter this modern attack method, with professional installation included free of charge anywhere in the UK.

6. Install A GPS Tracker

Even the best deterrents occasionally fail, which is why having a tracker fitted means you can locate your vehicle in real time if it's ever taken. GPSBob's car trackers range from simple two-wire plug-in devices you fit yourself to fully insurance-approved, professionally installed systems, and because they're sold with tracking prepaid for five years rather than a monthly subscription, there's no ongoing cost to worry about.

7. Set Up Geofence Alerts

Pairing a tracker with geofencing means you get an instant notification the moment your car moves outside a boundary you've set, whether that's your street or your driveway. This kind of alert can be the difference between spotting a theft within seconds and only noticing hours later when it's too late to act quickly.

8. Fit A Visible Dashcam

A dashcam won't physically stop someone breaking in, but the presence of a camera acts as a genuine psychological deterrent, since most thieves want to avoid being recorded. It also provides useful evidence for insurance claims or police reports if anything does happen to your vehicle while parked.

9. Etch Your Number Plate Or VIN Onto Windows

Window etching, where your vehicle registration or VIN is permanently marked onto the glass, makes a stolen car far harder to sell on or break for parts. It's a small, one-off cost that significantly reduces the resale value of your car to thieves, which in turn makes it a less attractive target.

10. Remove Valuables And Avoid Advertising Your Car's Value

Leaving bags, laptops or even loose change visible on your seats can turn a simple deterrence problem into an opportunistic smash-and-grab. Keep your car's interior tidy and free of visible valuables, and avoid leaving branded accessories or documents that hint at a higher-value vehicle.

11. Use A Wheel Clamp For High-Risk Situations

If you're leaving your car unattended for an extended period, such as at an airport car park or in an area with known theft issues, a wheel clamp adds a highly visible physical barrier. Thieves are far less likely to attempt a theft when they can see it will take considerable time and tools to get the car moving.

12. Combine Tracking With Immobilisation For Maximum Protection

The strongest deterrent isn't usually a single device, it's combining a tracker with an immobiliser so your car is both hard to start and easy to trace if a theft is attempted anyway. This layered approach, tracking plus CAN bus immobilisation, is exactly why many insurers now offer their best discounts to drivers running both systems together rather than just one.

Protect Your Car Today

Combining the right physical habits with proven technology gives you the best chance of keeping your car exactly where you left it. Take a look at GPSBob's full range of car trackers and car immobilisers to find a solution that fits your vehicle and your budget, with free UK-wide installation and no hidden monthly fees.

Frequently Asked Questions

Does an alarm alone stop a car being stolen?

An alarm alone rarely stops a determined thief since many modern systems can be silenced or bypassed quickly, which is why it's best combined with an immobiliser or tracker.

Are older cars more at risk of theft than newer ones?

Older cars can be more vulnerable because they often lack modern electronic security features, though newer keyless models face their own specific risk from relay attacks.

Can insurance premiums be reduced by adding theft deterrents?

Yes, insurers frequently offer discounts when a Thatcham-approved tracker or immobiliser is fitted, since it demonstrably lowers the statistical risk of theft.

How quickly can a keyless car be stolen using a relay attack?

A relay attack can take as little as 10 to 30 seconds once thieves are positioned near your key fob's signal, making prevention far more effective than reaction.

Is it worth fitting more than one type of security device?

Yes, layering different deterrents such as a physical lock, an immobiliser and a tracker addresses different theft methods and makes your car significantly less attractive to opportunist and professional thieves alike.