The Short Answer
A front-only dash cam covers about 70% of incidents — everything in front of your car. A front+rear setup covers close to 95%. The extra £50-80 for a rear camera is, in our view, the single best value upgrade you can make.
But it depends on where and how you drive. Let’s break it down.
What a Front-Only Dash Cam Captures
A forward-facing camera records:
- Everything in front of you — other cars, cyclists, pedestrians, road signs
- What happens at traffic lights, roundabouts, and junctions
- The behaviour of the car in front (brake-checking, erratic driving)
- Road conditions, weather, and any hazards ahead
This is enough for most accident scenarios where you’re hit from the front or side. If someone pulls out of a junction into your path, runs a red light, or brake-checks you — a front camera has it covered.
What You Miss Without a Rear Camera
Here’s what a front-only camera cannot show:
- Rear-end collisions: By far the most common type of accident. Someone rear-ends you at a roundabout or traffic lights — your front camera sees nothing. A rear camera shows exactly what happened.
- Tailgating: Aggressive driving from behind is captured with timestamps and number plates.
- Hit-and-runs while parked: A car scrapes your bumper in a car park and drives off. A rear-facing camera catches the number plate.
- Police stops: A rear camera records interactions behind your vehicle.
When Front-Only Is Fine
Stick with front-only if:
- Your budget is genuinely tight (under £120)
- You mostly drive on quiet rural roads with little traffic behind you
- You park in a locked garage every night
- You’re fitting a camera to a second car or a teenager’s first car
For these situations, we recommend the Viofo A119 Mini 2 — it delivers excellent 2K video with Sony’s STARVIS 2 sensor for around £100, and includes buffered parking mode. It’s the best front-only camera at this price.
When Front+Rear Is Worth the Extra
Get a dual-camera setup if:
- You drive in town or city traffic regularly (more rear-end risk)
- You park on the street or in public car parks
- You do motorway miles (tailgating, lane-change disputes)
- You use your car for work (delivery, taxi, ride-share)
- You simply want maximum protection — peace of mind is worth £50
For most UK drivers, the Viofo A229 Plus is the sweet spot: 2K front + 2K rear, GPS, WiFi, and buffered parking mode for around £200. If you want 4K quality, step up to the Viofo A229 Pro at around £280 — Wirecutter’s top pick for good reason.
The Cost Breakdown
A front-only setup costs £70-120. A front+rear setup costs £200-430, depending on resolution and features. That £80-100 difference buys you:
- Coverage behind your car — the most common accident direction
- Evidence if you’re rear-ended (50%+ of urban accidents)
- Parking protection from both ends
- Higher chance of catching a number plate in a hit-and-run
Spread over 3-5 years of driving, that’s about £2 a month for peace of mind. We think it’s a bargain.
Our Verdict
If you can afford £200, get a front+rear camera. The extra coverage is genuinely useful, and the price difference has never been smaller. A front-only camera is infinitely better than no camera at all — but if you’re going to fit a dash cam, fit one that protects you from both directions.