Stereos
Using Dash Cam Footage for an Insurance Claim in NZ
Most people buy a dash cam and never think about the footage again until the day they need it. That is the day they discover the file was overwritten, or the plate is unreadable, or they have no idea how to get it off the camera. Worth sorting out before you need it, not after.
Why footage helps in a claim
Insurance disputes usually come down to competing accounts of what happened. Without evidence, an insurer weighs two versions and often lands on shared liability, which affects your excess and your no-claims history even where you did nothing wrong.
Footage collapses that argument. It shows who crossed the line, what the light was doing, and how fast things were moving.
It is worth being clear-eyed though: footage cuts both ways. If you were at fault, it shows that too. Most people find that acceptable, because the scenario they are insuring against is the one where they were not.
The first rule: save the file immediately
Dash cams record in a loop, overwriting the oldest footage continuously. Depending on card size and resolution, your loop may only be a few hours long.
If something happens, do these two things at the scene:
- Press the lock or emergency button. This marks the current file as protected so the loop will not overwrite it. Most cameras do this automatically on impact via the G-sensor, but do not rely on it, because a minor bump may not trigger the threshold.
- If in any doubt, take the card out. A card sitting in your pocket cannot be overwritten. Replace it with a spare.
The most common way people lose critical footage is driving home afterwards while the camera quietly records over it.
What makes footage actually useful
A readable number plate. This is the single thing that matters most and the thing cheap cameras fail at, particularly at night or against headlights. See our guide on choosing a dash cam for what to look for.
Timestamp accuracy. Check that your camera’s clock is right. A file stamped with the wrong date invites an argument about whether it is even the right incident. Cameras with GPS set their own time and avoid this entirely.
Speed and position data. GPS logging records how fast you were going. In a disputed claim this removes the “you must have been speeding” line before it is raised.
Continuity. Provide the unedited file. Trimming a clip to the interesting bit is the fastest way to have its reliability questioned.
How to hand it over
Copy the original file off the card to a computer or cloud storage before doing anything else. Keep the original untouched. Send a copy, not the only copy.
Cameras with Wi-Fi make this dramatically easier, because you pull the file to your phone at the roadside rather than finding a card reader that evening.
Parking incidents
Being hit while parked is where dash cams pay for themselves most reliably, because there is no other witness and no other evidence at all.
This only works if the camera has parking mode and is hardwired with a voltage cutoff so it has power while the ignition is off. A camera running from the cigarette lighter socket records nothing while you are in the supermarket.
If parking protection is why you want a dash cam, the hardwiring is not an optional extra. It is the feature.
Practical maintenance
- Format the card monthly. Dash cams write constantly and file systems corrupt. A corrupted card records nothing while appearing to work fine.
- Use a high endurance card rated for continuous surveillance writing. A standard card will fail, usually silently.
- Check playback every few months. Actually watch a recent file. Confirming it works is a two minute job that beats discovering it stopped working in March.
- Keep the lens clean. A film of dust on the inside of the windscreen softens every frame.
Get it hardwired properly
Touchstone Automotive hardwires dash cams at our Auckland workshop, front only or front and rear, with a voltage cutoff kit so parking mode works without flattening your battery, and cabling hidden behind the trim.
Bring your own camera or buy one with us.
This article is general information about using dash cam footage, not legal or insurance advice. Check your own policy wording and speak to your insurer about how they handle video evidence.
