The wheels slip and lose traction on flat dry grass. This causes the mower to wiggle its way outside of the boundary wire frequently. A very terrible flaw. I added the ACS accessory and it does not consistently see objects unless it is over 10" in height and around 10" in width. Even with ACS installed, the mower still manages to get banged and scratched up by running into things as large as a playscape, shed, and trees. Also take note unless your pavers are over 10" tall, the ACS will not detect them. You will need a wire to keep the mower away from them.
The Worx Landroid mower says it can handle up to 20 degree inclines but they do not tell you a boundary wire will not work on or near any angle other than completely flat. Even then as I mentioned above, the mower still wiggles itself outside of the boundary wire. The Worx Landroid mower actually presses down the grass flat more than it actually mows, this creates a very sloppy mow when compared to my previous robot mower. The mower can handle up to 4 programmed areas but you can not change to another area while it is mowing. The mower must return all the way home then you can send it manually send it out again. The method the mower uses for reaching areas you program is by using the boundary wire every time. Meaning it has to drive your entire boundary to get to a far zone. This creates very visible tracks and is inefficient when compared to other mowers.
It was normal for me to have to retrieve the Worx Landroid mower when it would slightly leave the boundary wire, usually 2-3 times every 4 hours of operation.
The LCD was a installed a little crooked and seems to be a manufacturing mistake.
The grass height adjustment was manufactured and installed 180 degrees backwards, another manufacturing mistake.
The battery was losing charge within 20 days of use and even one time caused the mower to die while mowing and never return to the home base.
The security GPS is really terrible. I would not rely on it and actually brought the mower inside each night.Sometimes it would say it was well over 100 yards away, which can be a problem if it was ever stolen. This mower allows anyone to press the power button and walk off with the mower without the mower even reporting its location for over a day - despite what the advertising says. It is also very easy for a thief to look on the bottom of the mower and determine they need to use a phillips screwdriver to easily remove the GPS tracking unit which is clearly labeled.
The iPhone app is also poor and does not automatically refresh itself. Half the time when you try to check the status of your mower it is old info and unusable data, or it gives you an error stating it can not connect to the mower or the mower is offline. This can cause you to believe your mower is gone. Not a good feeling when you're gone from home.
When I contacted Worx about the worst issues with the manufacturing of the Worx Landroid mower, they promised to call me back within 48 hours with a resolution. I had to call back 3 days later and was then again promised a call within a day for a resolution. When I didn't get a call back I called once again and asked for a supervisor, but there are none to talk to I was told. Upon me calling again, they told me my options were to return the mower to Amazon, or wait past 30 days and ship the mower to them for warranty repair. Neither of these options really felt good and the lack of ability to return my calls is just not acceptable. I don't believe Worx is a good company who will support their customers, even when they are in the wrong.
I chose to return the Worx Landroid mower, the ACS, and the garage. I will wait until next year and buy my previous brand of robot mower. I will never trust Worx again.