4 sourced reports, with what to check before you buy. Each one links to the page it was reported on.
Costly or dangerous
Omni/docking station leaks water; mop-wash catch basin overflows
Multiple independent owners report the docking station leaking water around it and the mop-wash basin overflowing, with one owner noting the intake valve itself was not the leak point.
What to check. Before buying, check the station's water plumbing and the mop-wash tray seal; a leak here can damage flooring and is reported to recur even after service. Expect this to be a warranty/repair issue rather than a user-fixable one.
Water ingress into robot body oxidises motherboard; warranty refused with ~€187 quote
An Italian owner reports the wall base leaking water at month 23; the service centre refused warranty repair citing water infiltration and motherboard oxidation, quoting €187 — nearly the unit's full value. This documents both the leak and the service/warranty cost of it.
What to check. The leak is not just cosmetic: water reaching the robot's mainboard is treated as out-of-warranty damage, and the quoted repair (~€187) approaches the product's value. Verify warranty terms before relying on coverage for a leak.
Dirty water pump damaged by cleaning agents; sealing ring warps and leaks
Xiaomi's own UK FAQ confirms the dirty water pump can be damaged by adding cleaning agents and that a warped sealing ring causes leaks, matching the owner-reported station leaks.
What to check. Use only plain water in the tanks; adding cleaning agents is officially cited as a cause of pump damage. If the pump fails or the seal warps, the station cannot drain dirty water and may leak, which typically needs service.
Unit stopped working after ~1.5 years and could not return to charging station
Owners report the unit failing to return to its charging station and stopping working after roughly 1.5 years, with one unit needing three repairs. This is a reliability/longevity concern for a flagship model.
What to check. If the robot cannot dock, it cannot recharge or self-clean, effectively ending its usefulness. Several owners report this appearing after a year or more, so consider expected lifespan and warranty length.
These reports come from the pages linked under each item: owner forums, repair guides and workshops. They are not a diagnosis of any one unit, and a careful check of the one you are buying still applies.
Text from the Kriko Robot vacuums catalog, version 0.1.2, under the CC-BY-SA-4.0 license.
