Modern cars are more connected than ever. Features like keyless entry, smartphone apps, Wi-Fi hotspots, and remote vehicle access make driving more convenient — but they also create new opportunities for theft and hacking.
Keyless car thefts, relay attacks, and electronic vehicle crime continue to rise across the UK, particularly on newer vehicles with advanced technology.
Here are some practical ways to reduce the risk of your car being hacked or stolen.
For more practical ownership advice, visit our maintenance guidance hub.
What Is Car Hacking?
Car hacking usually refers to criminals exploiting a vehicle’s electronic systems to:
- Unlock doors remotely
- Start the engine without a key
- Access onboard systems
- Disable security features
- Steal personal data
Most thefts involve “relay attacks,” where thieves amplify the signal from a keyless fob inside your home.
1. Store Your Keyless Fob Safely
One of the simplest ways to reduce theft risk is to keep your keys away from doors and windows.
A better option than storing keys in the fridge is using:
- A Faraday pouch
- A signal-blocking key box
- A metal container designed to block radio signals
These stop criminals from amplifying your key’s signal outside your home.
For cars with modern entry systems, our advice on preventing keyless entry theft highlights practical ways to stop criminals from exploiting wireless vulnerabilities.
2. Use a Steering Wheel Lock
Traditional steering locks still work well as visible deterrents.
Even if thieves gain electronic access to the vehicle, a physical lock:
- Slows them down
- Makes theft harder
- Encourages criminals to target easier vehicles instead
Visible security devices are often enough to make opportunistic thieves move on.
3. Disable Bluetooth and Wi-Fi When Not Needed
Leaving wireless systems permanently active can increase vulnerability.
If your vehicle allows it:
- Turn off Bluetooth when not in use
- Disable onboard Wi-Fi hotspots
- Remove saved devices you no longer use
This reduces unnecessary wireless exposure.
4. Be Careful With USB Devices
Plugging unknown USB devices into your car can create security risks.
Avoid:
- Random USB sticks
- Cheap unverified accessories
- Unknown charging devices
If you regularly use USB drives in your vehicle, scan them on a computer first using trusted antivirus software.
5. Protect the OBD Port
The OBD (On-Board Diagnostics) port allows mechanics to access vehicle systems — but criminals can also exploit it.
Thieves sometimes use illegal devices connected to the OBD port to:
- Program new keys
- Disable immobilisers
- Access security systems
OBD locks and relocation kits can help make this more difficult.
6. Keep Vehicle Software Updated
Many modern cars receive software updates that improve security and fix vulnerabilities.
If your manufacturer offers updates:
- Install them promptly
- Enable automatic updates where available
- Check dealer recalls regularly
Outdated software can leave connected systems exposed.
7. Park Smart
Where you park still matters.
Whenever possible:
- Park in well-lit areas
- Use driveways or garages
- Avoid leaving valuables visible
- Turn wheels toward the kerb when parked
Layering physical and digital security is the best approach.
8. Don’t Assume Expensive Cars Are Safer
Luxury vehicles with advanced technology are often targeted more frequently because:
- They’re valuable
- Parts are in demand
- Electronic systems are more complex
More technology can sometimes mean more attack points if security isn’t properly managed.
What To Do If You Think Your Car Has Been Compromised
Signs can include:
- Unexplained unlocking
- Warning lights
- Strange infotainment behaviour
- Battery drain
- Remote access issues
If you suspect tampering:
- Contact your manufacturer or dealer
- Change connected app passwords
- Disable digital access features temporarily
- Report suspicious activity to police
Strengthening your overall vehicle security is a smart first step, and our guide on protecting your car from theft shows how simple habits can reduce both physical and digital risks.
Thinking About Changing Your Car?
If security concerns are making you reconsider your current vehicle, understanding its value can help you decide your next step confidently.
👉 Get a free instant, no-obligation valuation here with our free online valuation tool.
Key Takeaway
Modern vehicle technology brings convenience — but also new security risks.
Simple precautions like signal-blocking key storage, physical locks, software updates, and smart parking habits can significantly reduce the chances of your car being targeted.