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Vehicle Security & Leaving Your Car Safely

Locking your car, hiding valuables, and choosing safe parking spots are simple habits that protect your vehicle and reduce your insurance risk.

The full guide

Vehicle security is about protecting your car from theft and damage, as well as keeping yourself and your passengers safe. Simple habits make a big difference, and the examiner may ask you about vehicle security as part of the show me, tell me questions.

Always lock your car when you leave it, even if you are only away for a moment. Close all windows and sunroofs, and do not leave valuables on display. Thieves often target cars with bags, phones, or sat-navs visible on seats or dashboards. If you must leave items in the car, put them in the boot before you park so no one sees you do it.

Choose your parking spot carefully. Park in well-lit areas, especially at night. If possible, use a car park with security cameras or attendants. Avoid isolated spots where your car is hidden from view. When parking on the street, face your car towards the traffic flow so it is more visible.

An immobiliser is an electronic device that prevents your car from starting without the correct key. Most modern cars have factory-fitted immobilisers. If your car does not have one, consider having one fitted by a qualified installer. Immobilisers significantly reduce the risk of theft.

When leaving your car, check that nothing is left on display. Remove sat-nav mounts and suction marks from the windscreen, as these suggest there may be valuables in the car. Take your keys with you — never leave them in the ignition, even if you are just paying for fuel.

If your car has an alarm, use it. Alarms deter thieves and alert others if someone tries to break in. Make sure you know how your alarm works and how to deactivate it if it goes off accidentally.

Common faults

  • Leaving valuables visible inside the car
  • Not locking the car when leaving it unattended
  • Leaving windows or sunroofs open when parked
  • Parking in poorly lit or isolated areas
  • Leaving sat-nav mounts or suction marks on the windscreen
  • Leaving keys in the ignition while paying for fuel
  • Not knowing how to use the car alarm or immobiliser

What the examiner looks for

  • You understand the importance of locking your car when leaving it
  • You know not to leave valuables on display
  • You can explain how to choose a safe parking spot
  • You understand what an immobiliser is and why it matters
  • You know to remove sat-nav mounts and suction marks
  • You understand why you should never leave keys in the ignition

Quick tips

  1. 1Lock your car even if you are only away for a minute
  2. 2Put valuables in the boot before you park, not after
  3. 3Remove sat-nav suction marks from the windscreen — they advertise valuables
  4. 4Park in well-lit, busy areas whenever possible
  5. 5Never leave your keys in the ignition, even at the petrol station

Common questions about vehicle security & leaving your car safely

What should I do with my valuables when I park?
Put them in the boot or glove box before you park, so no one sees you hiding them. If you must leave items in the car, make sure they are completely out of sight. Even an empty bag on the seat can attract thieves.
What is an immobiliser and do I need one?
An immobiliser is an electronic security device that prevents your car from starting without the correct key. Most modern cars have them fitted as standard. If your car does not have one, consider having one professionally fitted. They are highly effective at preventing theft.
Why should I remove my sat-nav mount when I park?
A sat-nav mount or suction mark on the windscreen tells thieves that you may have a sat-nav or other valuables in the car. Even if you have removed the device, the mark suggests there may be something worth stealing inside.
Is it safe to leave my keys in the car while paying for fuel?
No. Never leave your keys in the ignition, even for a moment. A thief can jump in and drive off in seconds. Take your keys with you every time you leave the car, no matter how briefly.
What is the safest place to park at night?
Park in a well-lit, busy area. Use a car park with security cameras or attendants if possible. Avoid isolated spots where your car is hidden from view. Thieves prefer dark, quiet areas where they can work undisturbed.
Should I leave my car alarm on all the time?
Yes, if your car has an alarm, you should use it whenever you leave the vehicle. Alarms deter thieves and alert others if someone tries to break in. Make sure you know how to deactivate it if it triggers accidentally.

Ready to put this into practice?

These guides are a great starting point, but nothing replaces working with a DVSA-approved instructor who can give you real-time feedback.

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Vehicle Security & Leaving Your Car Safely | The DTC