Roborock S8 MaxV Ultra: Specs, Features, Pros & Cons
This review measures the Roborock S8 MaxV Ultra against the full 38-spec sheet we track for Robot Vacuums, comparing it like for like with the 37 other models in our database. It earns a VS Score of 51 out of 100 — the weighted result of every verified specification measured against the class average.
On the spec sheet it is strongest in navigation and weakest in maintenance & filtration. Its clearest single advantage over the class average: 1.57 more multi-floor maps — 4 vs 2.43 (avg). None of our retail partners currently lists the Roborock S8 MaxV Ultra, so availability may be limited; a missing price never affects the VS Score. A transparency note: this spec sheet is 89% complete. Anything unverified shows as Unknown and is left out of the score — we never estimate a missing value.
Category strengths
Where the Roborock S8 MaxV Ultra beats the average
- 1.57 more multi-floor maps ?4 vs 2.43 (avg)
- 8.24 mm more mop lift ?20 mm vs 11.76 mm (avg)
- Has mopping ?
- Has self-empty dock ?
- Has edge-cleaning extension ?
- 942.31 mAh more battery capacity ?6,400 mAh vs 5,457.69 mAh (avg)
- Has dirt detection & re-mop ?
- Has automatic detergent dispenser ?
- 6.43 min more runtime ?180 min vs 173.57 min (avg)
- Has auto-refill mop ?
Where the Roborock S8 MaxV Ultra trails the average
- 4,589.29 Pa less suction power ?10,000 Pa vs 14,589.29 Pa (avg)
- 381.08 ml less water tank ?100 ml vs 481.08 ml (avg)
- No HEPA filter ?
- 50.72 ml less dustbin capacity ?270 ml vs 320.72 ml (avg)
- 4.91 mm less threshold clearance ?19 mm vs 23.91 mm (avg)
- 14.33 °C less mop wash temperature ?60 °C vs 74.33 °C (avg)
- 8.39 mm more height ?105 mm vs 96.61 mm (avg)
- 0.05 less cleaning modes ?4 vs 4.05 (avg)
Editor’s note
The S8 MaxV Ultra is the top of Roborock's mainstream range, and the specification that most separates it from the Qrevo models below it is the mop lift: 20 mm.
That figure decides whether a home with both hard floor and carpet can be cleaned in a single run. At 20 mm the mop pads clear medium-pile carpet entirely, so the machine mops the tiles and vacuums the rug without you cordoning anything off. The Qrevo models manage 7 to 10 mm, which handles a thin rug and not much more.
Suction is 10,000 Pa through a DuoRoller rubber brush, the dock washes the pads at 60°C and dispenses detergent automatically, and dirt detection triggers a second mopping pass over an area that comes up dirty. It stores four floor maps, so a multi-storey house works without re-teaching it.
Navigation is LiDAR with obstacle avoidance, and a 6,400 mAh battery gives 180 minutes with recharge-and-resume. The bin holds 270 ml and the tank 100 ml. The pads are removable for hand washing, and the filter is washable.
Two limits. It is 105 mm tall, so low furniture is out — measure first. And threshold clearance is 19 mm, so a raised door saddle will still stop it.
Buy it if you have carpet and hard floor in the same rooms and want one run to handle both. Buy a Qrevo if your floors are uniform, where the extra lift buys nothing.
Specifications
Quality bars are generated automatically against 37 other robot vacuums.
Cleaning
Higher suction lifts more dirt from carpets and hard floors.
Also mops hard floors.
The physical mopping system used by the robot.
Lifts the mop over carpet to avoid soaking it.
Automatically recognises carpet and adapts suction or mopping behaviour.
Extends a side brush or mop closer to walls and into corners.
The available cleaning modes.
How much floor it can cover on one charge.
The main brush design (e.g. anti-tangle rubber).
Navigation
How it maps and navigates; LiDAR is the most precise.
Builds and saves a map of your home.
How many floor maps it stores.
Detects and avoids objects and cables.
Set virtual walls and keep-out areas in the app.
The tallest doorway lip or threshold the robot can climb.
Battery & dock
A larger battery runs longer between charges.
How long it cleans on a full charge.
Returns to charge, then finishes where it left off.
Empties its bin into the dock automatically.
The dock refills clean water and drains dirty water.
The dock washes and dries the mop pads.
The dock can detach the mop pads before vacuum-only or carpet cleaning.
The maximum published hot-water temperature used to wash the mop.
The maximum published warm-air temperature used to dry the mop.
The dock automatically doses cleaning solution.
Detects dirty wash water or floor stains and automatically re-washes or re-mops.
Design
A lower profile fits under more furniture; lower is better.
A larger onboard bin needs emptying less often.
The onboard clean-water capacity for mopping.
Quieter operation is less disruptive; lower is better.
Smart features
Control and schedule it from a phone app.
Works with Alexa and Google Assistant.
Set cleaning schedules.
Send it to clean specific rooms or zones.
Maintenance & filtration
A high-efficiency filter captures fine dust and allergens.
The onboard filter can be rinsed and reused.
The brush design reduces wrapped hair and manual cleaning.
Mop pads can be removed for cleaning or replacement.
How the VS Score works — and what it can’t tell you
Every measurable spec is scored against the average of all the Robot Vacuums we track: matching the class average scores 50, clearly beating it climbs towards 100, and each spec counts according to an editorial weight that reflects real-world impact — a battery-capacity gap moves the score far more than a colour-options list. The quality bars on the spec cards above show where this model sits inside the full range for its class, and the overall VS Score rolls every weighted result into one number.
Unknown values are never estimated. A spec this product doesn’t report simply drops out of its scoring — it isn’t penalised with a guess — but a thinner spec sheet does mean a score built on fewer data points, which is why completeness is disclosed under About this data.
Most importantly: a spec-sheet lead is not the same as a better product. Megapixels, gigahertz and benchmark points describe capacity, not experience — image processing, software optimisation, thermals, haptics and ergonomics decide how a device actually feels, and no table captures reliability or long-term support quality. Treat the VS Score as a structured summary of what can be measured, not a substitute for your own priorities.
About this data
- Specifications are compiled from each manufacturer’s official spec sheet, cross-checked against trusted specification databases, and normalised into one schema so identical things are compared identically.
- Specifications last verified July 23, 2026.
- Data completeness: 34 of the 38 specs in this category are verified (89%). Anything we could not verify is shown as Unknown — never estimated — and is excluded from the score.
- Prices and availability come from live retailer feeds via our shopping partners and refresh throughout the day; a missing price means no partner currently lists the product, not that it is discontinued.
- Want the full picture? Our editorial guidelines explain how we research products, weight the scores and stay independent.
- Spotted an error in a spec? Tell us and we will correct the sheet.
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The bottom line
The Roborock S8 MaxV Ultra earns a VS Score of 51, a solid mid-pack result among the 38 robot vacuums we compare here. It stands out for 1.57 more multi-floor maps, 8.24 mm more mop lift and has mopping. Just be aware of 4,589.29 Pa less suction power and 381.08 ml less water tank before you buy. Weigh those trade-offs against what matters most to you.
The VS Score is generated automatically from the weighted specifications above, measured against all other robot vacuums in our database. Treat it as a shortlisting guide — not a substitute for your own priorities.
