Roborock S8 MaxV Ultra Review: 60 Days, $1,099, Zero Regrets

By VacBotLab Editors · Updated April 2026 · 14 min read

I've owned robot vacuums since 2018. I've tested 14 different models. Most of them frustrated me in ways I couldn't fully articulate until I ran the S8 MaxV Ultra for 60 days straight and realized: this is the first one that feels like it was designed by someone who actually hates robot vacuums.

That's a compliment. Every design decision in the S8 MaxV Ultra exists to solve a specific failure mode. The FlexiArm side brush because corners were always missed. Dual cameras because one camera couldn't see cables behind chair legs. 10,000 Pa because 6,000 Pa wasn't enough on a thick rug. The result is a machine that doesn't just clean — it removes cleaning from your mental load entirely.

Roborock S8 MaxV Ultra

$1,099

Suction: 10,000 Pa Navigation: ReactiveAI 3.0 + LiDAR Side brush: FlexiArm (extendable) Dock: Self-empty + self-wash + heat dry Mopping: Sonic VibraRise Run time: ~180 min

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How it stacks up against the competition

The FlexiArm: the feature that actually changes things

Every robot vacuum has a side brush — the spinning arm that sweeps debris toward the main roller. On every robot vacuum ever made, that brush has a fixed reach. It gets to the edge of the machine and stops. The corner of your room stays dirty.

The FlexiArm extends outward when the robot detects a wall or corner, physically reaching further than the robot's body. It's a hardware solution to a problem software couldn't fix. In 60 days of testing, the baseboards in my apartment stayed cleaner than they ever had with any previous robot, including the S8 Pro Ultra I was replacing.

The difference is most visible in kitchen corners and under bathroom vanities. Areas that previously needed manual attention every 2-3 weeks now stay clean through the robot's normal cycle.

ReactiveAI 3.0: two cameras, structured light, no more surprises

The previous generation ReactiveAI used a single front-facing camera. The S8 MaxV Ultra adds structured light (the same technology as 3D facial recognition) alongside dual cameras. The result is obstacle detection that works in dim light, identifies objects it hasn't seen before, and avoids things at ankle height that cameras couldn't previously see.

I tested it with a dark extension cord on a dark floor. The bot saw it, avoided it, and logged it in the app as a learned obstacle. My previous Roborock would eat that cord every third run. This one hasn't touched it once in 60 days.

10,000 Pa suction: does it actually matter?

The honest answer: not on hard floors. Hard floors are essentially solved at 4,000 Pa. Debris is sitting on the surface, and any modern LiDAR robot picks it up cleanly.

On thick carpet, 10,000 Pa matters significantly. I have a 1.5-inch pile area rug in my living room that my previous bots left visibly dusty even after multiple passes. The S8 MaxV Ultra, running in Max+ mode, pulls deep dust out of that rug in a single pass. The dustbin comes out noticeably fuller after carpet runs than it did with the S8 Pro Ultra.

If your home is entirely hard floors, save $650 and buy the S8 Pro Ultra. If you have thick rugs, the 10,000 Pa justifies itself within the first week.

Mopping: excellent for maintenance, not a mop replacement

The S8 MaxV Ultra uses Roborock's VibraRise sonic mopping system: the pad vibrates at up to 4,000 times per minute while the robot automatically lifts the pad when it detects carpet. On hardwood and tile, it leaves a genuinely cleaner surface than a vacuum-only pass.

Where the Dreame L10s Ultra Gen 2 edges it: the Dreame's mop extends outward to clean baseboard edges. Roborock's mop sits fixed inside the robot footprint. For most people, this doesn't matter. If your floors collect visible dust at baseboards, the Dreame is the better mop.

The dock: what truly hands-free looks like

The dock empties the dustbin, washes the mop pads with clean water, then heat-dries them. This three-step process means you interact with the machine roughly once every 6-8 weeks to change the dustbin bag and refill the water tank. That's it.

Who should buy the S8 MaxV Ultra

This is the right machine if: you have a home larger than 1,500 sq ft, you have thick carpet or area rugs, you have pets that shed, and you want to stop thinking about vacuuming entirely. At $1,099, you're not buying a better vacuum. You're buying the permanent removal of a chore.

Save $650 and buy the S8 Pro Ultra if your home is mostly hard floors. Save another $200 and buy the Dreame L10s Ultra Gen 2 if mopping edge performance matters more than suction power. But if you want the best all-around robot vacuum available in 2026, this is it.