Robots Rated.
SearchFind my robot

Robots Rated Compare

Compare robots.
See what matters.

Choose any two products to compare local price, specifications, strengths, weaknesses and practical ownership.

vs

Comparison view

Robot Vacuum S40 or Saros 20?

Robot Vacuum S40 is best suited to homes prioritising mapped room cleaning and app scheduling; Saros 20 is best suited to early adopters who want roborock's newest premium floor-care system. Compare their features and compromises below.

ProductLocal priceStatus
Choose Robot Vacuum S40 if...

Homes prioritising mapped room cleaning and app scheduling.

Main compromise: buyers who need a robot that is available to buy immediately.
Choose Saros 20 if...

Early adopters who want Roborock's newest premium floor-care system.

Main compromise: buyers who want a lower-cost robot or a compact dock.

Side by side

The meaningful differences.

SpecificationXiaomi Robot Vacuum S40Roborock Saros 20
Claimed suction10000Pa hurricane-like suction fan blower—
NavigationLDS laser navigation system with 360° 3D floor mapping and multi-storey map supportStarSight Autonomous System 2.0
Mopping270mL water tank, three water flow output levelsRotating mop module with FlexiArm edge and corner cleaning
Battery5200mAh (nominal capacity)—
Run time≥180 minutes—
Threshold clearancedoor thresholds up to 20mm high—
Cleaning system—Vacuum and mop
Body height—7.98cm
Launch date—24 August 2026
Dock—Brand-New RockDock with hot-water self-cleaning: 100°C hot-water mop washing, 55°C hot-air drying, auto-emptying, automatic water refilling

Official product sources

Head-to-heads we have written

The comparisons people ask for most, with a verdict, the verified specifications and both prices.

vsRoborock Saros 10 vs Saros 20

Buy the Saros 10.

Read the head-to-head vsDreame X50 Ultra vs Roborock Saros 10

Buy the Roborock Saros 10 unless you need the climb.

Read the head-to-head vseufy Omni E25 vs Omni C28

Buy the C28 and save £150.

Read the head-to-head vseufy E15 vs C15 robot lawn mower

Buy the C15 if your lawn is under 500m² and reasonably flat — it is £500 cheaper, in stock, and has the most completely verified specification of any mower we researched.

Read the head-to-head vsRoborock Qrevo Curv 2 Pro vs Qrevo S Pro

Start with the Qrevo S Pro.

Read the head-to-head vsMammotion LUBA 3 AWD vs Husqvarna Automower 405VE NERA

Buy the LUBA 3 AWD for difficult ground.

Read the head-to-head