ROBOVERDICT

Head to head · Robot vacuums

Dreame L40 Ultra AE vs Dreame L40 Ultra Gen 2

Dreame L40 Ultra AE or L40 Ultra Gen 2? The L40 Ultra Gen 2: suction 25,000 vs 19,000 Pa, runtime 3 h 51 min vs 3 h. Verdict Scores 83 and 80.

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

Verdict

The Dreame L40 Ultra AE has the higher Verdict Score, 83 to 80.

The Dreame L40 Ultra AE has the edge in obstacle avoidance and value. The Dreame L40 Ultra Gen 2 has the edge in cleaning, ease of use and reliability.

No published figure puts the Dreame L40 Ultra AE ahead. In the manufacturers' published figures the Dreame L40 Ultra Gen 2 is ahead on 2 rows: suction (25,000 Pa against 19,000 Pa) and runtime (3 h 51 min against 3 h).

The Dreame L40 Ultra AE suits polish buyers who want a full dock at a mid-range price. The Dreame L40 Ultra Gen 2 suits tidy homes with hard floors and low-pile rugs.

Dreame
L40 Ultra AE≈ $410
Dreame
L40 Ultra Gen 2$570

Where the Dreame L40 Ultra AE is ahead

  • Obstacle Avoidance95 · 58
  • Value83 · 64

Where the Dreame L40 Ultra Gen 2 is ahead

  • Cleaning93 · 82
  • Ease of Use97 · 94
  • Reliability73 · 64
  • Suction25,000 Pa · 19,000 Pa
  • Runtime3 h 51 min · 3 h

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
L40 Ultra AE
Dreame
L40 Ultra Gen 2
Dreame L40 Ultra AE
Dreame press image
Dreame L40 Ultra Gen 2
Dreame press image
≈ $410Price in the manufacturer's shop
$570Price in the manufacturer's shop
Highest Verdict Score
Check price on Amazon.comCheck price on Amazon.com

Shop links are affiliate links: a purchase through them may earn RoboVerdict a commission, which never changes a ranking.

At a glance
Leads on
  • Obstacle Avoidance
  • Value
  • Cleaning
  • Ease of Use
  • Reliability
Pros
  • Complete sheet: 395 ml bin, 5,200 mAh, 180 minutes, 168 m²
  • Dock washes at 75 °C, dries, refills from 4.5 l, doses detergent and re-washes by dirt colour
  • AI camera with structured light and an LED, 120+ obstacle types
  • 25,000 Pa with a hair-cutting TriCut brush in the box
  • Mops extend 4 cm and lift 10.5 mm
  • Dock empties, washes, hot-air dries, refills and doses detergent
Cons
  • 19,000 Pa, the lowest suction among Dreame's washing-dock models here
  • No threshold height or noise figure
  • No carpet suction boost claimed
  • No camera or object recognition
  • 2 cm threshold limit
  • No dimensions or noise figure published
Best for
  • Polish buyers who want a full dock at a mid-range price
  • Homes that mop daily and want the dock to judge the dirt
  • Tidy homes with hard floors and low-pile rugs
  • Buyers who want the full Dreame dock and can live without a camera
Score breakdown
Verdict Score83/10080/100
Cleaning
82
93
Navigation
76
76
Mopping
82
82
Obstacle Avoidance
95
58
Automation
90
90
Ease of Use
94
97
Reliability
64
73
Value
83
64
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
Suction19,000 Pa25,000 Pa
Brush systemTangle-resistantTangle-resistant
Side brushes11
Carpet boostNoYes
Dustbin395 mlNot published
Carpet detectionUltrasonic; clean or avoid by app settingNot published
Runtime, as testedNot published231 minutes and 156 m² vacuuming in the quiet setting
Navigation
MappingLiDARLiDAR
Obstacle avoidanceCamera + depth sensorStructured light
Saved floor plansNot published4
Threshold climbNot published20 mm
Mopping
Mop typeTwin spinning padsTwin spinning pads
Mop lift10 mm10 mm
Extending mopYesYes
Water tankNot publishedNot published
Mop extensionNot published40 mm
Moisture levelsNot published32
Dock
Self-emptyingYesYes
Mop washingYesYes
Mop wash temperature75 °CNot published
Mop dryingYesYes
Water refillYesYes
Plumbed drainNoNo
Dust bag interval100 days100 days
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
Dock size and weight457 × 340 × 590 mm, 9.0 kgNot published
Dust bagNot published3.2 l
DetergentNot publishedAutomatic dosing from the dispenser in the listing
Software
No-go zonesYesYes
Pet waste recognitionNoNo
Power
Battery5,200 mAh5,200 mAh
Runtime3 h3 h 51 min
Charging timeNot publishedNot published
Area per charge168 m², standard vacuumingNot published
Connectivity
Wi-FiYesYes
BluetoothNoNo
4G / LTENoNo
Voice controlYesYes
MatterNot publishedBy a coming update
Physical
Weight4 kg4.01 kg
L × W × H350 × 350 × 97 mmNot published
NoiseNot publishedNot published
Support
WarrantyNot published36 months
ReleasedNot publishedNot published
Obstacles
Recognised obstacle types120+Not published
Fit
Dock size and weightNot published457 × 340 × 590 mm, 8.86 kg

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