You should remove anything that is valuable, personal, or could be misused or damaged, with special attention to your vehicle registration and obvious valuables that attract thieves.

Key item: documents

  • Vehicle registration document and ownership papers, so thieves cannot more easily sell or “prove” ownership of your car.
  • Insurance papers and other ID-style documents that reveal your name, address, or contact details.
  • Printed directions or documents that clearly show your home address or workplace, especially if your keys or plates could link back to you.

Valuables in plain sight

  • Phones, laptops, tablets, cameras, and other electronics, which are prime targets for a quick smash-and-grab.
  • Wallets, handbags, backpacks, shopping bags, and visible gift bags, even if there’s nothing valuable inside, because thieves will not know that.
  • Coins, toll money, or visible chargers and mounts that signal you usually keep electronics in the car.

Items that reveal your routines

  • Standalone or removable sat nav / GPS units and their mounts, and clear saved “Home” addresses in built-in navigation when parking in risky areas.
  • Work badges, uniforms, or labeled bags that show where you work or study, which can make you easier to identify or follow.
  • Mail or parcels with your full name and address left openly on seats or the dashboard.

Safety and damage risks

  • Lighters, pressurized cans, and loose batteries, which can overheat and leak, burst, or even start a fire in a hot car.
  • Loose electronic devices and power banks that can be damaged by heat or leak hazardous material if they fail.
  • Bottled drinks in direct sun, especially aerosol beverage cans, due to pressure build-up and possible explosion in high temperatures.

Practical “before you leave” checklist

  • Take: registration and other key documents, your phone and electronics, wallet/handbag, visible bags and parcels.
  • Clear: GPS mounts, charging cables, and anything that hints there might be valuables hidden away.
  • Move (if you must leave it): less valuable items can go out of sight in the boot/trunk or locked glovebox, but avoid leaving important papers or electronics in the car at all.

Information gathered from public forums or data available on the internet and portrayed here.