ROBOVERDICT

Head to head · Robot vacuums

Dreame L50 Ultra vs Roborock Saros 20

Dreame L50 Ultra or Roborock Saros 20? Verdict Scores 85 and 86. The L50 Ultra: warranty 36 vs 12 months; the Saros 20: suction 36,000 vs 19,500 Pa.

Manufacturers' published figures, scored by the same engine as the rankings. Nothing here is from a test we ran. · Updated

Verdict

The Roborock Saros 20 has the higher Verdict Score, 86 to 85.

The Dreame L50 Ultra has the edge in obstacle avoidance, automation, value and reliability. The Roborock Saros 20 has the edge in cleaning and navigation.

In the manufacturers' published figures the Dreame L50 Ultra is ahead on one row: warranty (36 months against 12 months). In turn, the Roborock Saros 20 is ahead on 3 rows: suction (36,000 Pa against 19,500 Pa), threshold climb (45 mm against 42 mm) and mop wash temperature (100 °C against 75 °C).

At $760 against $1,600, the Dreame L50 Ultra is the cheaper of the two. The Dreame L50 Ultra suits homes with high sills or a step between rooms. The Roborock Saros 20 suits homes with a mix of hard floors and carpet.

Dreame
L50 Ultra$760
Roborock
Saros 20$1,600

Where the Dreame L50 Ultra is ahead

  • Obstacle Avoidance100 · 95
  • Automation90 · 89
  • Reliability73 · 64
  • Value48 · 35
  • Warranty36 months · 12 months

Where the Roborock Saros 20 is ahead

  • Cleaning93 · 92
  • Navigation94 · 80
  • Suction36,000 Pa · 19,500 Pa
  • Threshold climb45 mm · 42 mm
  • Mop wash temperature100 °C · 75 °C

Subscores are from our engine; the specification rows are the manufacturers' published figures, listed only where the better direction is beyond argument.

Full specification, side by side

Compare
Dreame
L50 Ultra
Roborock
Saros 20
Dreame L50 Ultra
Dreame press image
Roborock Saros 20
Roborock press image
$760Price in the manufacturer's shop
$1,600Price in the manufacturer's shop
Highest Verdict Score
Check price on Amazon.comCheck price on Amazon.com

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At a glance
Leads on
  • Obstacle Avoidance
  • Automation
  • Reliability
  • Value
  • Cleaning
  • Navigation
Pros
  • Legs for a 4.2 cm sill or a 6 cm double step
  • RGB camera with structured light, 180+ object types and pet recognition
  • The dock washes at up to 75 °C, re-mops by the colour of the wash water, dries, refills and holds dust for 100 days
  • Solid-state 3D sensing with no turret: 80 mm tall and still maps in the dark
  • Leaves the mop on the dock for carpet and lifts the chassis over 30 mm of pile
  • 36,000 Pa with a fully anti-tangle brush and an extending side brush
Cons
  • 97 mm tall with a fixed LiDAR, against the L50 Pro Ultra's 89.5 mm
  • No noise figure, charging time or robot tank size published
  • Sold out on Dreame's Polish shop and not listed on the German one
  • Roborock publishes neither the dustbin nor the water tank capacity
  • One year of warranty
  • No plumbed drain: the dirty-water tank is still emptied by hand
Best for
  • Homes with high sills or a step between rooms
  • Pet owners who want the robot to see the animal and keep clear of it
  • Homes with a mix of hard floors and carpet
  • Low furniture that a LiDAR turret cannot fit under
Score breakdown
Verdict Score85/10086/100
Cleaning
92
93
Navigation
80
94
Mopping
92
92
Obstacle Avoidance
100
95
Automation
90
89
Ease of Use
94
94
Reliability
73
64
Value
48
35
Specifications

In green: the better figure where the direction is beyond argument, such as more lawn or less noise. Where it depends on your home, nothing is marked.

Cleaning
Suction19,500 Pa36,000 Pa
Brush systemTangle-resistantTangle-resistant
Side brushes11
Carpet boostYesYes
Dustbin395 mlNot published
Side brushExtends and liftsNot published
Hair length handled without tanglingUp to 30 cmNot published
Navigation
MappingLiDARSolid-state 3D ToF + camera
Obstacle avoidanceCamera + depth sensorCamera + depth sensor
Saved floor plansNot publishedNot published
Threshold climb42 mm45 mm
Mopping
Mop typeTwin spinning padsTwin spinning pads
Mop liftDetaches for carpetDetaches for carpet
Extending mopYesYes
Water tankNot publishedNot published
Dock
Self-emptyingYesYes
Mop washingYesYes
Mop wash temperature75 °C100 °C
Mop dryingYesYes
Water refillYesYes
Plumbed drainNoNo
Dust bag interval100 daysNot published
Wash temperature settingsFour, up to 75 °CNot published
Dirt detectionA colour sensor reads the wash water, sets one of 32 wash volumes and sends the robot back to re-mopNot published
Water tanks4.5 l clean, 4.0 l dirtyNot published
Dust bag3.2 lNot published
Dock size and weight457 × 340 × 589 mm, 9.2 kgNot published
Warm-air dryingNot published131 °F / 55 °C
Detergent dispensingNot publishedAutomatic
Software
No-go zonesYesYes
Pet waste recognitionYesNo
Power
Battery6,400 mAhNot published
Runtime3 h 20 minNot published
Charging timeNot publishedNot published
Area per charge186 m², quiet modeNot published
Connectivity
Wi-FiYesYes
BluetoothNoYes
4G / LTENoNo
Voice controlYesYes
Physical
Weight4.44 kgNot published
L × W × H352 × 348 × 97 mmNot published
NoiseNot publishedNot published
Support
Warranty36 months12 months
ReleasedNot published2025
Chassis
Double-step threshold60 mm over two steps more than 40 mm apart (ProLeap legs)Not published
Carpet pile clearedNot published1.18 in / 30 mm
Obstacles
Recognised object types180+300+

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