Problems are listed from most common to least. "Owner" means we have hit it in our own yard. "Testers" means it shows up in independent lab or long term reviews. "Owner reports" means it recurs in other owners' feedback but we have not seen it ourselves.
1. The app and zone editing are fiddly (owner, testers)
This is the number one complaint and it is fair. Mapping is fast. Editing is not. Boundaries that come out slightly wrong, channels between zones that are too narrow, and no go zones that need a redraw are the usual first week of ownership. The app has improved with an in app drawing tool and better no go zone controls, but it still assumes you know what you are doing.
Map on a calm day with the mower following you at walking pace, and stay a foot inside any fence or bed so it never clips them. Make channels between zones at least a mower and a half wide. Do the whole map in one sitting, then leave it alone. You will touch it maybe twice a season after that.
What happened to us: we made a mistake saving one zone and had to map it twice. We added no go zones later, and once we figured out the tool, that part was quick.
2. Tight passages confuse it (testers)
Passages only slightly wider than the mower body, think a gap between the house and a fence, are where the Luba 3 hesitates, bumps, or gives up. The LiDAR sees the walls fine. The navigation logic is the limit.
If the gap is under about three feet, do not route the mower through it. Map the two sides as separate zones and either carry it across or accept that the strip gets a string trimmer. Fighting this one costs more time than it saves.
3. Small objects get clipped (testers, owner reports)
Obstacle detection is excellent for anything the size of a dog or a lawn chair. It is not excellent for a garden hose, a small toy, or a fallen branch under about an inch. The cameras do the reactive work here and the LiDAR did not change that much.
Thirty second yard scan before a scheduled cut, or schedule cuts for a time you know the yard is clear. Roll up hoses. This is the one habit that decides whether the mower feels magical or annoying.
4. Turf scuffing on tight turns (testers)
The Luba 3 turns like a skid steer. On soft, wet, or thin turf, a tight turn at the end of a row can tear a small patch. It is better than the Luba 2 thanks to improved traction, but it is not gone.
Do not mow wet. Rotate the cut direction between sessions so turns do not land in the same spot. On a chronic problem area, pull the boundary in a few inches so the turn happens on the healthier grass.
5. Network RTK signal drops (owner reports)
Network RTK depends on a cellular or wifi connection and on correction data coming from the network. When that drops, older RTK only mowers stop. The Luba 3 is better positioned here than anything else in its class because the LiDAR keeps it localized, but a poor connection at the far end of a big lot can still cause a pause.
Put the dock where it has strong wifi or use the mower's cellular connection. If a specific corner of the yard always drops, that corner probably has poor coverage, not a mower fault. A cheap wifi extender near that side of the house solves it.
6. LiDAR durability is an open question (testers)
The spinning LiDAR sensor on top is a moving part exposed to weather. Nobody has multi year data yet because the mower is new. Testers flag it as the thing to watch. We have had no issue in our first season, and we are noting that as one data point, not proof.
Keep the dome clean, park it under the dock cover if you bought one, and bring it inside for winter. Register the warranty. If the LiDAR fails inside the warranty period, that is exactly what the warranty is for.
7. Edges still need a trimmer (owner)
Not a defect, but it surprises people. Wire free mowers stay a little inside the boundary, and the Luba 3 is no different. Edge mode gets closer. It does not eliminate the last few inches along fences and beds.
Accept it. A string trimmer every week or two takes ten minutes. That is the entire manual labor of a robot mowed lawn.
8. Missed patches or stripes that do not line up (owner reports)
Occasionally owners report a missed strip or stripes that wander. Almost always this traces back to a positioning wobble during that session, a low battery cut short, or a boundary drawn slightly off.
Run a second session. If the same patch is missed twice, redraw that piece of the boundary. Check that the mower is not finishing on low battery by shortening the zone or letting it run two sessions.
9. Something blocking the dock (owner)
You will not find this one on most problem lists, but we hit it ourselves. Every so often our kids leave something too close to the charging station, and the mower cannot line itself up to dock and recharge. Our dock sits in a tight spot in the garage, which makes it more sensitive to clutter.
Keep a clear path in front of the dock and make it a family rule. If your dock is in a cramped space, consider a spot with more room on the approach, outside if that works for your yard.
What has not been a problem for us
- Slopes and turf. About 30 percent of our yard is sloped, with tree roots making the ground uneven. It handles all of it, and we have no scuff marks after a full season.
- Shade and trees. The whole reason we bought it. It holds position where RTK only mowers drop.
- Night cuts. It does not need daylight and it is quiet.
- Setup. Under an hour for the hardware. No antenna, no wire, no roof.
Bottom line
Every problem on this list is either a first week learning curve or a habit. None of them are the mower failing to do the job. If you can give it one weekend and one thirty second yard scan before cuts, the Luba 3 AWD earns its price. Read the full owner review for the whole picture, or the comparison if you are not sure it is the right mower for your yard.
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