Yes — but with important caveats.

Where an action camera works as a dashcam:

- Image quality is often better than a dedicated dashcam at the same price

- Wide-angle lens captures a broad field of view

- Can be removed and used for other purposes (a dedicated dashcam cannot)

- Loop recording mode (available on most action cameras) automatically overwrites old footage

Where a dedicated dashcam is better:

- Auto-on/off with ignition — action cameras require manual power management or third-party wiring kits

- Parking mode — dedicated dashcams have motion detection and low-power standby; action cameras do not

- Heat tolerance — being left in a car in summer sun can damage action camera batteries and electronics; dashcams use capacitors designed for this

- Continuous reliability — dashcams are purpose-built to run for years with no interaction; action cameras may hang, overheat, or require manual reset

Verdict: An action camera works as a temporary, occasional, or trip dashcam. For a primary, always-running dashcam, buy a dedicated dashcam.