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Finding the Best Dash Cam for Your Car

By Max Mutter ⋅ Senior Review Editor
Sunday January 6, 2019

Dashboard cameras can, at the best of times, capture something incredible that you otherwise may not have recorded (remember the Chelyabinsk meteor in Russia that was captured on film thanks to the popularity of dash cams in that area?). At the worst of times, these cameras can capture footage of an accident or encounter that can help you in fighting a ticket or getting a fair share from your insurance company. Regardless of whether you want one of these cameras to capture all the spontaneity that can arise while driving, want some peace of mind in our litigious society, or both, we can help you find the right model. To that end, we've put together a step-by-step guide for figuring out what you should be looking for in a digital driving documentarian.


Step 1: Who Could Benefit From a Dash Cam?


Likely the most common group of people that can derive some value from a dashboard camera are those that want some peace of mind that they will be protected from superfluous lawsuits. If you end up in a fender bender or worse, having footage proving you were not at fault can be key in avoiding any legal damages, and in reaping the proper compensation from your insurance company. If you live in a very rural area the lower risk of such an occurrence may not warrant the investment in a dash cam, but if you live in a city full of distracted drivers and pedestrians that are constantly causing you stress, one of these cameras may be able to alleviate at least some of that worry.

A growing group of people that rely on footage of their driving and of what's happening inside their cars is rideshare drivers. Whether you're driving for Uber, Lyft, or something similar, a dash cam can help protect you from some of the liability associated with using your personal vehicle as a taxi. Some models even have second cameras that can record the cabin of a vehicle.

The final group of people that may like to have a camera permanently in their car are those that want a record of their scenic cruises, or that often are met with looks of disbelief when sharing the crazy thing that happened on their commute.

Step 2: Do You Need a Rear Camera?


Many models offer a second camera that points to the rear of the car. Often these cameras can double as a backup camera. If you've already decided to get a dash cam and always get stressed by your car's blind spot when you put it in reverse, this is a worthwhile addition. However, if you're mostly looking for something that can prove your innocence in an accident, a rear camera is less likely to be useful than a front-facing one. That is because most accidents that damage the rear of a car are not considered the fault of that driver. For example, drivers that get rear-ended are almost never considered at fault for the accident, simply because the onus is on the driver behind to pay attention to the road in front of them and stop in time. That isn't to say a rear-facing camera couldn't provide valuable footage from an accident, but we would consider it less valuable than a front-facing camera.

The Vantrue N2 is the only model we tested that has a second camera  which is used to record the driver and passengers. Some of the cameras we tested offer optional rear cameras that look out the back of the car  but we don't consider that a necessary feature.
The Vantrue N2 is the only model we tested that has a second camera, which is used to record the driver and passengers. Some of the cameras we tested offer optional rear cameras that look out the back of the car, but we don't consider that a necessary feature.

Step 3: Do You Need to Record What's Happening Inside Your Car?


This is almost exclusively useful for rideshare drivers, as footage from inside the car can provide proof of any poor behavior from passengers that might bring negative consequences to yourself or your business.

Important Note: In most states you must prominently display a notice informing your passengers that they are being recorded for both video and audio.

Step 4: Consider Mounting the Camera


Most dash cams mount in one of two ways: via a suction cup on the windshield, or with an adhesive mount that can be glued to the windshield or dashboard. Suction cups tend to be much larger and can obstruct more of the driver's view, but can easily be transferred from car to car. Adhesive mounts tend to be much smaller and more discreet, but can leave residue on the windshield if you ever decide to remove them, and can't move between cars (you'll have to buy a second mount if you want to move the camera between cars frequently).

Adhesive mounts allow for a slimmer  more windshield-hugging profile  but do leave residue on the windshield.
Adhesive mounts allow for a slimmer, more windshield-hugging profile, but do leave residue on the windshield.

Step 5: On-Camera Displays Are Useful


Almost all of the cameras on the market have some sort of attached display, but there are some exceptions. Overall, we think these displays are very useful. Not only do they let you quickly check that the camera is oriented correctly, they also let you change settings and review or manage footage without hooking the camera up to a computer. You can certainly get by without one, but we think not having a display generally makes a camera a bit less user-friendly.

Almost by definition  suction cup mounts created a much bulkier overall package than their adhesive cousins.
Almost by definition, suction cup mounts created a much bulkier overall package than their adhesive cousins.

Step 6: Consider Field of Viiew


Most cameras have a field of view of around 165˚, which strikes a nice balance between being able to see much of the road in front of you without warping the picture too much. However, some cameras go much wider or narrower. Narrower fields of view lose much of the side view from the windshield, but tend to register things in front of the car with a bit more clarity. Wider views can capture more area, but make it a bit less likely that you'll be able to make out the licenses plate number of the car ahead of you. You'll want to weigh how these pros and cons relate to your intended dash cam use.

The Garmin (left) has a 106Ëš field of view and the Rexing (right) has a 170Ëš field of view.
The Garmin (left) has a 106Ëš field of view and the Rexing (right) has a 170Ëš field of view.

Step 7: Consider Storage


Almost all cameras write their footage to a microSD card, but some can accept larger cards than others. Most cameras record until the storage is full, and then automatically start overwriting the oldest footage to make way for the new. This is almost always done with the technique of loop recording, meaning the camera saves discrete video clips of a certain length. For example, if you have your loop recording clip length set to 3 minutes, the memory card is going to be filled up with a bunch of different files, all containing a 3-minute video clip. Once the card is full, it will automatically delete the oldest 3-minute clip to make way for a new one. Most cameras offer different options for loop recording clip lengths, ranging from 1 to 10 minutes.

Almost all cameras also have an accelerometer or G-sensor that can detect the sudden acceleration or deceleration inherent in a driving accident. When it detects a "driving event" it will then put the current video clip into a separate folder where it will be protected from being overwritten.

So you'll have to decide what loop recording clip length is right for you. Short, 1minute clips keep the memory card from filling up from clips of everytime you stopped short at a stop sign. However, it also increases the chance that an event could occur 57 seconds into a clip, meaning most of the action is going to be contained in the next clip, which won't be protected from overwriting. Longer clips might fill up a memory card faster and could require you do some clip management to free up space more often, but increase the chances that all of an accident will be encompassed in a single clip. While the length of protected clips is certainly a consideration, it won't matter too much if you're sure to offload and save the footage to a camera right after an accident, which is what most people are most likely to do.

You'll have to consider how much footage you need to keep handy, and how often you'll be offloading footage that you want to save, when deciding how much storage you need from your dash cam. For reference, most cameras fill up an 8 GB memory card with about an hour of 1080p footage, or about 3 hours of 720p footage.

Step 8: Do You Need Any Special Features?


In general we don't find the extra bells and whistles offered by some cameras useful, but in some instances they may improve your dash cam experience.

Lane Departure Warnings


Some models can use their cameras to warn you when you're drifting out of your lane, or even warn you of a red light up ahead. However, we generally found these features to be less reliable than the versions that come built-in to newer cars, and they didn't inspire much confidence in our testing. It certainly can't hurt to have these features, but they certainly are not on our list of reasons to consider buying a dash cam.

Parking Surveilance


Some models use an internal battery to monitor the motion sensor while your car is parked, ideally springing to life if someone tries to break into the car. However, unless you have ideal temperature conditions or add in an extra external battery, it's unlikely the battery will last long enough for times when a feature like this would be useful (ie. leaving your car in an airport parking garage for a week). Also, we found the triggers for these cameras to be unreliable when in parking surveillance mode, and it is quite unlikely that any footage of a thief will lead to you being reunited with your belongings.

Associated Apps


Some cameras can beam short segments of footage straight to your phone. If you're going to be constantly sharing clips of your drives with friends, this can be quite a useful feature. For those that just want to have footage in case they get into an accident, pulling the SD card and plugging it into a computer isn't going to be inconvenient.

GPS


Unless your dash cam is part of a larger system that can provide turn-by-turn directions, all that GPS will do is record the coordinates where video is being captured. While that information can be useful in some circumstances, it generally won't add any value to your dash cam use.

Conclusion


While most dash cams are very similar, there are subtle differences that can make some much better for specific uses than others. We hope this guide has helped you narrow the field of dash cameras you're considering, and led you to a product that you'll be pleased with.


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