Had it one day, did Firmware upgrade via the App. It is now a brick.
No ability to recover from brick mode, wish I had read all the negative reviews first!

I am not reviewing the technical aspects of the camera. The camera itself looks OK. I am not sure about the video quality because I never got to use it.
The initial setup questions every time it is powered on make it unusable. Even after the software upgrade, which is meant to fix the issue. Who wants to spend a minute or two before every drive to set up the dash cam over and over?
Garmin Drive App which is used for the camera to connects to your phone to view the images is more often not working than working. You have to keep trying a number of times to connect. If you are lucky it connects. Most of the times it doesn't.
It is just not good enough. You expect the product to work when you pay for it.

The Good- High quality footage, good mounting point easy to mount in the car.
The Bad- the camera constantly detects a crash/event and fills the event folder (this is on each of sensitivity settings, so lets say that function is useless). My camera is wired into my electrical system to record car park events- the camera stays in car park mode and does not film continuous footage. I have never successfully captured an event. Garmin offered to replace the item. Its been 2 years with constant emails, nothing received yet. DONT BUY A GARMIN DASHCAM.

Dash camera video quality is good. All Garmin dash cameras are advertised as having Bluetooth / wireless access via an app. This app is unusable. It will not locate an Android phone by Bluetooth. When it is located on an Apple device it refuses to download footage. These problems have been long term problems for Garmin an so far they have refused to rectify these problems. Subsequently if you choose to purchase a Garmin dash camera the claim of wireless access is false.

No problems with the picture quality, the red light and speed camera work as they should but the lane departure is completely useless. Have had the camera exchanged for a new and both have been the same. Own a Mazda BT50 and it matters not a jot if I program the Garmin for high or low. Very disappointing.

I bought from jb hi fi
Went home to set up saved settings and soon as you power off and on loses the settings and will ask to set again and wont record .i did this few times and didnt work and got refund.
I thought garmin was good brand but at least cheaper brand i had lasted 6months
I will not buy garmin dash cam again.

If you want to power this camera up using a standard USB cable..forget it. Garmin have used the fourth pin in their 12volt power supply to check the cable out. The Camera will not charge if you want to run multiple devices from your cig lighter/ 12 volt power supply. You are forced to use the proprietary Garmin car charging cable which allows for only one device to be plugged into the cig socket... One word..Lemon

Out of the box voice control didn't even feature on the menu. Also it failed to pick up the satellite signal. Garmin took an average of about 2 full days to respond to the support requests, but every time they responded they wanted more information. It took two weeks and still no solution, still no offer of replacement, so I just sent it back and got a full refund. I don't know where the 5 star ratings came from - it certainly wasn't my experience with the product, or with Garmin support.

I bought this as I have 2 Garmin GPS units, both of which are great. However, this unit failed the first day. I set up as per instructions ( which by the way are very vague ), added it to Garmin Express and did a software update, thats when it all turned bad. The download froze the unit. After 2 days of searching Garmin troubleshooting and reading blogs, I came to the conclusion Mac software does not work very well. Even Garmin advise using windows on updates. Thats something not in the instructions. I did eventually get it working, but adding it again to Garmin Express really killed it. Its now winging its way back to Johnny Appleseed where I bought it, am getting a refund !

The quality of the footage is good, however, started having problems immediately after the first software update within weeks of purchase, with certain dash cam functions not working any longer. After much wasted time trying to get a software update to fix the problem and emails to Garmin I was asked to return it to them for replacement. I suggest Garmin should thoroughly test their software and updates BEFORE release - and not expect clients to do the testing for them

I did lots of research before buying a Garmin 55 dash cam. Initially everything worked fine, then within 2 weeks the voice command stopped working. And things got worse from there. Now whenever I turn it on I have to go through all the steps to set it up. I've tried to restore it many times but it refuses to restore. I even tried running the battery flat in the hope of causing it to re-set. All to no avail.

And now the latest version of Garmin Express v6.9.1.0 will not open on my Mac nor on my PC laptop. I'm in the process of looking for a different dash cam. This one is for the garbage bin.

One of the worst products I have ever owned.

easy to use and set up,have had a few cam's put them in front and rear of car,very indiscriminate,although I do make sure the rear cam' can be seen by tailgaters,which I don't get now,also have aged but still working perfectly a garmin gps never lets me down and if and when needed updates are quick and easy,hope I don't hex myself ,,,garmin is good

Found this product difficult to operate and it only works with the supplied cable? So do not loose it. Operation is not that easy and Garmin support failing. Windscreen mount was good but expensive for a magnet if you want to install in two vehicles. Would suggest looking elsewhere. Selling my unit as a major disappointment

So after days of research, going through all the other reviews, checking the price and actually testing the item, I think that the Garmin 55 is just the right dash cam for me! First of all, it works just as advertised, second, it actually exceeded my expectations as how easy it was to set up and running. Lastly, for the price, it has the features that actually should have been some premium added to it but they didn't so I got more value for my money.

Video quality good. I payed extra for voice control, but had to disable it. It constantly thinks a song said to stop recording audio, or to record video or other.
Listening to a podcast is hell, it will record video or another command every few minutes.
It makes it impossible to find specific videos as there are so many saved.
I turn voice control on after every update with hope.

Edit 06-03-19 Has gotten better with every update, hasn't misheard in days.

This worked well for about 2 months then died. New replacement camera did exactly the same. Costly to send them back repeatedly for warranty, so out of pocket. I have many other garmin products, and won't be buying them again after this experience. Footage was ok, Parking mode function accessory cable required (costly) to access this feature, proprietary cables are a pain.