An Older Flagship That's Aged Into the Mid-Tier
The Roborock S8 MaxV Ultra launched as a flagship. Two years on, it's no longer the top of the Roborock lineup — current models like the Qrevo Curv X and the Qrevo Curv 2 Flow have moved several features forward, including the DuoDivide split-brush design, much higher suction ratings, chassis lift, and roller-style mopping. The S8 MaxV Ultra is now a mid-tier robot by feature set.
What it does still have is real testing time. After 90+ days in the home, the S8 MaxV Ultra proved itself a capable everyday cleaner. Obstacle avoidance was the standout — easily the strongest category on the scorecard at 8/10, and consistent across the whole testing window. That's why the verdict landed at Just A Dad Approved despite the lower category scores elsewhere.
Where the robot's age shows is in the brush system and the dock. The old-style dual roller wraps long hair more than current Roborock designs, and the dirty water tank in the dock is genuinely hard to clean because the lid does not open. Those two friction points are the case for waiting on a real sale before buying.
What's in the Box and First Setup
Setup runs about 15 minutes — standard Roborock onboarding, no surprises. The Roborock app handles Wi-Fi pairing (2.4 GHz only) and PreciSense LiDAR mapping. The S8 MaxV Ultra’s older dock takes more floor space than current Roborock docks.
What's in the box: the robot, the Multifunctional dock, the flat mop pad attachment, side brush, the dual roller main brush (pre-installed), starter dust bag, station ramp, cleaning brush, and the charging cable.
Cleaning Performance: What It Actually Picks Up
Hard Floor & Tile Performance
10,000 Pa delivers competent pickup on hardwood and tile — below current Roborock flagship levels but still solid for everyday use. The flat mop pad shines on glossy hardwood, where spinning pads typically leave streak halos. For most apartments and hard-floor-heavy homes, the S8 MaxV Ultra’s hard-floor performance is still acceptable mid-tier work two years on.
Carpet and Pet Hair
Carpet at 7/10 — pulls dirt out of low and medium pile without drama. Hair tangle at 6/10 is where the S8 MaxV Ultra shows its age. The older-style dual brush roller is not split. Long hair from pets — golden retrievers, long-haired cats — will wrap the roller more than a current Roborock with the DuoDivide split-brush design. Manageable, not great.
Mopping Performance — The Flat-Pad Win
The flat mop pad is the unsung win on this robot. On glossy hardwood — the kind of surface that shows every streak — the S8 MaxV Ultra does not leave the halo most spinning pads do. Coverage is decent but not flagship-level, and the Ad vs Reality mopping claim did not hold up against the marketing. A solid mid-tier mop, not a flagship mop.
Edge and Corner Cleaning
Side brush with corner reach + flat mop pad with side reach. The Ad vs Reality corner cleaning claim passed cleanly. Real corner coverage — same approach as current Roborocks, just one generation earlier in execution.
Obstacle Avoidance — Best-of-Category for Its Generation
The S8 MaxV Ultra’s obstacle camera (ReactiveAI 2.0) was excellent at its launch and remains excellent today. Across long-term testing it avoided cords, shoes, pet bowls, and small toys consistently. Buyers worried about the robot tangling itself on objects will find this robot reliable. This is the single biggest argument for the Just A Dad Approved verdict.
The Dock Cleaning Problem
The biggest day-to-day complaint with this robot. The dirty water tank in the dock has a lid that does not lift off, and the tank itself cannot be fully removed. Practically, cleaning out gunk takes longer than it should — you can live with it, but the monthly clean takes longer than a newer Roborock dock would need. Combined with the flat mop pad needing periodic manual cleaning, the maintenance ceiling on the S8 MaxV Ultra is meaningfully higher than current Roborocks. For set-it-and-forget-it buyers, this is the disqualifying friction.
Cost to Own — All-Low, Standard Roborock
Replacement parts for the S8 MaxV Ultra are in the Low tier across every part category — dust bags, filters, side brushes, mop pads, main brush, and cleaning solution. Approximately $306/year OEM. Roborock's parts ecosystem is mature, parts are widely available, and generic alternatives exist for most consumables. Buyers worried about ongoing costs can buy with confidence on that front.
Roborock S8 MaxV Ultra vs the Competition
Roborock S8 MaxV Ultra vs Roborock Qrevo Curv X
The Curv X is a current flagship — chassis lift, 22,000 Pa (more than double), DuoDivide split-brush rollers (solves the hair problem), warm water mopping at the Thermo+ Dock 3.0, and a 3.14" thinner profile. It outperforms the Roborock S8 MaxV Ultra across nearly every category. The S8 MaxV Ultra’s only edge is price once you find it discounted.
Roborock S8 MaxV Ultra vs Roborock Qrevo Curv 2 Flow
The Curv 2 Flow brings Roborock's first SpiraFlow roller mop — one of the best Gen 1 mop rollers I’ve tested. If mopping is the priority and you want the upgrade story, the Curv 2 Flow is the answer. The S8 MaxV Ultra’s flat pad mops fine on glossy floors but doesn't approach the SpiraFlow's hard-floor performance.
Roborock S8 MaxV Ultra vs Roborock Qrevo Edge S5A
Current mid-range upgrade. The Roborock Edge S5A delivers split-brush hair handling (9/10), the redesigned dock that fixes the dirty water tank cleaning friction, and 2025 Pick of the Year status — at a similar price tier on sale. The S5A is the cleaner mid-range buy unless the S8 MaxV Ultra is on a deeper sale.