Dash cams explained: what actually matters before you buy
Resolution, night vision, parking mode and storage — what those dash cam specs really mean, and which ones are worth paying for.
Video quality: clear enough to read a number plate
The whole point of a dash cam is usable footage. Full HD (1080p) is the sensible minimum and handles most situations. Higher resolutions like 2K or 4K capture sharper detail at distance, which helps read number plates of cars further ahead. Whatever the resolution, footage at night is the real test — look for models that mention good low-light or night performance.
The features worth having
Spec sheets list dozens of features, but a handful do the real work:
- Loop recording — records continuously, overwriting the oldest footage so you never run out of space
- G-sensor — detects a bump or crash and locks that clip so it can't be overwritten
- Parking mode — records if something hits your car while parked (usually needs a hardwire kit)
- Wide viewing angle — around 140° or more captures adjacent lanes
Memory card and power
Most dash cams need a microSD card, and it pays to buy a card rated for continuous recording — standard cards wear out quickly in dash cams. For power, the simplest setup plugs into the 12V socket. A hardwire kit connects to the fuse box for a cleaner look and enables parking mode; if you're not comfortable doing that yourself, any auto electrician can fit one.
Questions before you buy?
Message us with how and where you drive and we'll suggest what suits — or check the car accessories range to see what's in stock now.