Roborock S8 Max Ultra Review: Excellent Cleaner, Divisive Long-Term Support
Quiet operation, accurate mapping and a fully automated dock earn strong loyalty, while cliff-sensor faults, charging problems and warranty friction dominate the negative reviews.
The S8 Max Ultra pairs 8,000 Pa suction with dual rubber brushes, a sonic-vibration mop and a dock that empties, refills, washes and dries, plus optional plumbed refill and drainage. Owners who have kept theirs running for a year or two describe it as one of the best purchases they have made: quiet, methodical, highly customisable and effective on both tile and carpet. The negative reviews are equally consistent and concern hardware and support, including cliff sensors failing, docking and charging faults, and parts no longer available for the model. It is a capable machine whose main risk is what happens after something breaks.
- Mixed carpet and hard-floor homes
- Buyers who want a plumbed refill and drainage option
- People who value quiet operation
- Owners who like deep app customisation
Pros
- Noticeably quieter than many rivals, including during self-empty
- Accurate mapping that usually needs only one run
- Deep app customisation for zones, schedules and no-go areas
- Optional refill and drainage system removes water chores entirely
- Dual rubber brushes resist hair tangling
Cons
- Cliff sensor failures reported with no replacement parts available
- Charging and docking faults reported around the one-year mark
- Support described as unhelpful by several owners
- Struggles with loose charging cables
- 8,000 Pa suction is modest against newer flagships
Who is the Roborock S8 Max Ultra for?
This is the model for buyers who want the full automation stack without moving to the newest flagship. It vacuums at 8,000 Pa with dual rubber brushes that resist tangling, mops with a vibrating pad, and can be paired with a refill and drainage system so the dock plumbs into your water supply and never needs manual filling or emptying of dirty water. It fits homes with a mix of carpet and hard floor, and owners with 1,500 to 2,000 sq ft report it covering a full floor comfortably in one run.
What buyers love
Noise is a standout: several owners say it is significantly quieter than Roomba or Ecovacs units they previously owned, especially during the self-empty cycle. Mapping is praised for needing only one run, and the app's zones, schedules and no-go areas are called genuinely useful, including seeing where the robot is stuck on the map. Long-term owners at the two-year mark report still being happy, noting it keeps floors consistently clean even if it does not replace a deep clean for dried-on messes.
Where it falls short
The complaints are specific and repeated. Cliff sensors failing after about eighteen months with no replacement parts available, units refusing to charge at the one-year mark, dustbin gaskets tearing so the robot stops emptying properly, and at least one report of an incompatible robot and dock arriving together. Several owners describe support as unwilling to diagnose or repair, which drives most of the one-star reviews. A few also note that vacuuming performance did not match expectations on carpet compared with the mopping.
Living with it day to day
Once mapped, the dock removes nearly all routine work: it empties the bin, refills the tank, washes the mop and dries it. With the refill and drainage version connected to plumbing, even the water tanks stop being a chore. Owners recommend running it daily or every other day rather than weekly, since the value comes from frequency. Charging cords and loose cables are still a known weakness, and the mop suits maintenance rather than scrubbing dried spills.
