Key takeaways
- Dash cams are legal in the UK, but mount them so they do not block your view of the road.
- Night performance and a stable, high-endurance memory card matter more than a headline resolution.
- Parking mode needs a constant power supply, which usually means a hardwire kit. Use one with a low-voltage cut-off to protect your car battery.
- Use footage responsibly. Sharing it publicly can raise privacy questions.
In this guide
A dash cam is cheap peace of mind. If you are in a collision or someone damages your parked car, video can settle an argument. But the market is crowded and the specs are confusing. This guide covers what actually matters.
Front only, or front and rear?
- Front-only: simplest and cheapest. Records what is ahead.
- Front and rear: also records the road behind, which is useful if you are hit from behind. Needs a cable run to the back window.
- Interior cameras: mostly used by taxi and ride-share drivers, with privacy considerations for passengers.
Video quality: more than the resolution
1080p is the practical baseline. Higher resolutions like 1440p or 4K can help, but the lens, the sensor and the night processing matter more than the pixel count. What you really want is to read a number plate at a sensible distance, in the dark and in glare. Reviews that show real night footage are more useful than the spec sheet.
Features worth having
- Loop recording. Old footage is overwritten automatically.
- G-sensor. Detects an impact and locks the clip so it is not overwritten.
- Parking mode. Records when the car is parked. See the power section below.
- GPS. Adds location and speed to the footage.
- Wi-Fi and an app. Lets you view and save clips on your phone. Useful, but check reviews on how reliable the app is.
- A supercapacitor rather than a battery. Supercapacitors tolerate heat better, which matters in a car on a hot day.
Memory cards
Dash cams write constantly. Use a high-endurance microSD card designed for continuous recording, and follow the manufacturer's recommended capacity. An ordinary card can fail early and you may only find out after you needed the footage. Format the card periodically, and check the camera is actually recording.
Power and parking mode
A dash cam normally plugs into the 12V socket and only records while the car is on. Parking mode needs constant power, so you need a hardwire kit or an OBD power cable with a low-voltage cut-off, which turns the camera off before it drains your car battery. If you are not comfortable with wiring, have it fitted by a professional.
Legality and mounting in the UK
Dash cams are legal to use in the UK. The key point is where you put it: it must not obstruct your view of the road. Many drivers mount one behind the rear-view mirror, within the swept area of the wipers but out of their line of sight. Make sure cables are tidy and do not interfere with airbags.
Using the footage
You can use your own footage to support an insurance claim or report an incident, and some police forces accept dash-cam submissions online. If you plan to post footage publicly, think about privacy, because people and number plates can be identifiable. When in doubt, share it with your insurer or the police rather than online.
Before you buy on Amazon UK
- Check the model number in the listing, photos and manufacturer's page. Similar names can be different models.
- Check what is in the box. Memory card, hardwire kit and rear camera are often sold separately.
- Read the lower-star reviews, especially about night footage and card errors.
- Check the returns policy in case the fit or mount does not suit your windscreen.
Which dash cam fits your driving?
- Everyday commuter: a reliable front camera with good night performance and a high-endurance memory card.
- City driver who parks on the street: a front and rear system with parking mode, wired in with a low-voltage cut-off.
- Business or fleet driver: consider a model with GPS and easy clip export, and check data-protection rules if you record other people.
- Occasional driver: a simple, low-maintenance model that starts and stops with the ignition.
Installation tips
- Clean the windscreen and test positions before sticking the mount.
- Route the cable along the headlining and A-pillar, keeping clear of airbags.
- Use the fuse box or an OBD cable for hardwiring, or ask a professional.
- Set the date, time and loop length and check a test recording.
- Check it occasionally. Look at a clip every month to make sure it is still recording clearly.
A short glossary
- Loop recording: overwrites the oldest footage when the card is full.
- G-sensor: detects impact and protects the current clip.
- Parking mode: records while the car is parked.
- Hardwire kit: connects the camera to the car's fuse box for constant power.
- Supercapacitor: a power-storage part that copes with heat better than a small battery.
Browse live listings in our Automotive department, and see how to avoid fake discounts in our guide to spotting a genuine Amazon deal.
Frequently asked questions
Are dash cams legal in the UK?
Yes. You must make sure the camera does not obstruct your view of the road, and that any wiring is safe. Check current guidance if you are unsure.
Will a dash cam drain my car battery?
If it is only powered while the engine runs, no. Parking mode keeps it powered when the car is off, so use a hardwire kit or battery pack with a low-voltage cut-off.
Do I need a rear camera?
A rear camera records being hit from behind, which front-only cameras miss. It is useful if you often park in busy areas or drive in heavy traffic, but costs more and takes longer to install.
Can I get a discount on insurance with a dash cam?
Some insurers may offer one and some may not. Ask your insurer directly rather than assuming.
How we write our guides: they explain what to look for, based on general knowledge and published guidance. We have not tested every product mentioned, and prices and availability change. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. See our Editorial Guidelines and Affiliate Disclosure.
