Roborock Qrevo S owner reports on Reddit now total 13 verified mentions โ a real sample that lines up with the product's own 5.4/10 ClearPick score: split 2 positive, 8 negative, and 3 mixed, more than 60% negative. That is a sharp contrast with the vacuum's 'set and forget' dock reputation and its roughly $999 CAD price: owners who post about the Qrevo S well past the first few weeks are disproportionately reporting mop-system leaks, a mop pad that stops moving, and a robot that suddenly needs to re-localize itself before every run. This report reads the actual thread data rather than the marketing narrative. The praise is real too โ the earliest, most-upvoted mention in the sample (40 upvotes) is glowing about first-run mapping and mopping โ but the complaints owners come back to write about months later cluster hard around reliability and mopping performance, not the initial setup experience.
Mopping performance: the most repeated complaint
Two of the 13 mentions address mopping performance directly, and both are negative. One owner who switched from a Shark Matrix vacmop after a year on the Qrevo S reports the mop and navigation 'leave a bit to be desired,' needing to break out a manual mop and bucket every couple of days โ and concludes the older Shark actually mopped better. A second owner running the highest vacuum-and-mop setting reports it 'still leaves stuff behind and does a pretty poor job mopping,' calling it worse than a Swiffer. Both accounts trace back to the same design limitation documented in the product's own spec sheet: room-temperature water with no detergent, built for daily maintenance rather than kitchen-grade deep cleaning. Owners who expected the latter are the ones showing up in these threads to say so.
Reliability complaints cluster around the mop's water system
Long-term reliability is the largest single complaint theme in the negative mentions. One owner whose unit is out of warranty (purchased November 2024) reports 'a major issue with the mop system' โ a steady stream of water dripping from the rear of the robot near the water refill port every time it leaves the dock. A second owner, replying in the same thread, reports the identical symptom on a unit purchased two months later, and adds that the leak caused water damage to the connectors for the dustbin and cliff sensors. A third owner reports the robot has started re-localizing itself โ spinning to re-establish its position on the map โ on every single run, something it didn't do when new, even when starting directly from the dock. A fourth reports the vacuum simply stopped reliably returning to its dock after roughly 25 hours of runtime, with no error thrown, just repeated hesitation at the dock entrance. These aren't isolated one-off complaints; they're owners replying to each other and confirming the same failure patterns months or years into ownership.
Dock and mop pad maintenance surprises
Two mentions flag dock and mop-pad maintenance specifically. One owner traces staining and residue on their area rugs back to the mop pads and worries the unit is spreading dirt rather than lifting it, while still saying they love that the unit mops and want to keep using it. Another reports a mop pad stuck in the down position that won't respond to surface-height changes; Roborock's only offered fix was a mail-in repair quoted at $140.
Navigation holds up early, but hair and cables are recurring snags
The earliest โ and most-upvoted, at 40 upvotes โ mention in the sample describes the Qrevo S as 'already smitten' territory: it mapped, vacuumed, and mopped a floor inside an hour, avoided shoes and clothes left on the floor, and had an app the owner called super easy to use. That same navigation system shows cracks later in the sample: one owner reports the LiDAR sensor stopped spinning after hair jammed it within weeks of purchase, despite a pet-free household, and questions whether the unit was poorly designed. A separate comparison thread notes that even measured against Roborock's own pricier Qrevo Master, the S 'still eats cables especially on carpet' โ a limitation that persists across Roborock's line, not just this model.
How it stacks up against Roborock's pricier models
The one mention that directly compares the Qrevo S to a more expensive Roborock model reads positive: an owner who tried both the Qrevo Pro and the Qrevo Master returned the Master, reporting it was 'maybe 1% better on cleaning and better on object avoidance but not perfect' while the S 'does decent cleaning as well, just slightly worse on corners.' For owners weighing the S against Roborock's premium tier, that's a rare data point suggesting the day-to-day performance gap may be smaller than the price gap implies โ though it's a single account, not a trend, and it says nothing about the reliability issues raised elsewhere in this sample.
What owners actually say
What buyers love
โGot a Roborock QRevo S. Already smitten. It's mapped, vacuumed and mopped the floor inside an hour, and it's done a better job than I would have. App was super easy to use. It avoided all my shoes, clothes etc.โ
r/RobotVacuums
โMaster is maybe 1% better on cleaning and better on object avoidance but not perfect. I tried both Pro and Master and returned Master as I didn't see much difference... S does decent cleaning as well, just slightly worse on corners (but still acceptable).โ
r/RobotVacuums
Common complaints
Mop system leaks after warranty ends
I purchased my Roborock Qrevo S in November 2024, so it's out of warranty. It's been working great up until recently, but now I'm having a major issue with the mop system... As soon as it leaves the dock, it starts dripping a steady stream of water from the rear of the robot, near the water refill port.
r/RoborockSame leak causes water damage
That's crazy. My robot was purchased January 2025 and I'm actually dealing with the exact same problem/symptoms (dripping from rear port). I haven't even dealt with the water valve though because I have some water damage to the connectors for the dustbin and cliff sensors as a result of tilting it forward.
r/RoborockLiDAR jammed by hair within weeks
I bought this Qrevo S just some weeks ago and its lidar sensor stopped spinning due to hair yesterday. We don't have pets / lots of hair around the house so unsure how this happened that quick... maybe this Qrevo S was poorly designed? I am a bit disappointed.
r/RoborockMopping underperforms a manual swiffer
With my qrevo S I usually run it on vacuum and follow that up with a vacuum/mop run on the highest settings. It still leaves stuff behind and does a pretty poor job mopping (worse than my swiffer tbh).
r/RobotVacuumsRe-localizes on every run now
My Roborock Qrevo S has started re-localizing itself on every clean โ it spins around to figure out where it is on the map before getting going, even when it starts directly from the dock. It used to just know its position instantly.
r/RoborockReddit's owner data on the Qrevo S is consistent with its 5.4/10 ClearPick score: 8 of 13 verified mentions are critical, concentrated in the mop's water system and post-warranty reliability. Owners using the vacuum for daily maintenance vacuuming and light mopping, with realistic expectations about room-temperature water, are the ones reporting satisfaction โ the earliest and most-upvoted account in the sample is enthusiastic about setup and first-run mapping. Owners who expected the mop to replace manual kitchen cleaning, or who hit the water-leak and re-localization failure modes after the warranty window closes, are the ones showing up to complain. Anyone buying now should budget for the real possibility of a mop-pad or water-system issue after the first year, and treat Roborock's post-warranty support as a genuine open question rather than an edge case.