Dreame L40 Ultra AE vs eufy HydroJet S2
Technical comparison · Robot vacuums and mops
Dreame L40 Ultra AE is ahead on days between bag changes; beyond that the two models differ in obstacle avoidance and declared data server region: design differences, not a ranking. On the category's technical index, Dreame L40 Ultra AE ranks #18 of 30, eufy HydroJet S2 #30.
| Parameter |
L40 Ultra AE
Dreame
F4 · Semi-professional
|
HydroJet S2
eufy
F4 · Semi-professional
|
|---|---|---|
| Identity | ||
| Launch year | — | 2025 |
| Use tier | F4 — Semi-professional | F4 — Semi-professional |
| Price | ||
| Price | ~450–1000 € | ~1000–2200 € |
| Price updated on | 09/2026 | 09/2026 |
| Universal specs | ||
| Dimensions (W×D×H) | 35 × 35 × 9.7 cm | – × – × 9.8 cm |
| Weight | 4 kg | 5.2 kg |
| Category specs | ||
| Cleaning functions | Vacuums, Mops | Vacuums, Mops |
| Availability in Europe | On sale | On sale |
| Suction power | 19000 Pa | 30000 Pa |
| Navigation system | Rotating LiDAR | — |
| Release year | — | 2025 |
| Onboard camera | Yes | Yes |
| Obstacle avoidance | Structured light, Camera with AI recognition | 3D time-of-flight sensor, Camera with AI recognition |
| Onboard microphone | Yes | No |
| Robot height | 97 mm | — |
| Declared data server region | European Union | Multiple regions |
| Robot diameter | 350 mm | — |
| Battery capacity | 5200 mAh | 4600 mAh |
| Live video from the app | Yes | — |
| Runtime | 180 min | — |
| Charging time | 210 min | 240 min |
| Dustbin capacity | 395 ml | — |
| Two-way audio | Yes | — |
| Water tank capacity | — | 120 ml |
| Mopping system | — | Roller with continuous rinsing |
| Mop lifting height | 10.5 mm | — |
| Extending mop for edges | Yes | Yes |
| Repairability index (France) | 8.2 /10 | — |
| Dock functions | Automatic emptying, Mop washing, Hot water washing, Mop drying, Warm air drying, Detergent dispenser | Automatic emptying, Mop washing, Hot water washing, Warm air drying, Detergent dispenser |
| Wi-Fi bands | 2.4 GHz | 2.4 GHz |
| App | Dreamehome | eufy |
| Mop washing water temperature | 75 °C | 60 °C |
| Dust bag capacity | 3.2 l | — |
| Days between bag changes | 100 giorni | 68 giorni |
| Dock height | 590 mm | — |
| Anti-tangle declared | Yes | Yes |
| Filter type | Washable | — |
| Carpet handling | Detects the carpet, Avoids the carpet, Boosts suction, Lifts the mop | — |
| Matter | — | Built in |
| Cliff sensors | Yes | Yes |
The differences that matter
- Days between bag changes: Dreame L40 Ultra AE 100 giorni vs eufy HydroJet S2 68 giorni
- Obstacle avoidance: Dreame L40 Ultra AE Structured light, Camera with AI recognition · eufy HydroJet S2 3D time-of-flight sensor, Camera with AI recognition
- Declared data server region: Dreame L40 Ultra AE European Union · eufy HydroJet S2 Multiple regions
- Dock functions: Dreame L40 Ultra AE Automatic emptying, Mop washing, Hot water washing, Mop drying, Warm air drying, Detergent dispenser · eufy HydroJet S2 Automatic emptying, Mop washing, Hot water washing, Warm air drying, Detergent dispenser
In short
Dreame L40 Ultra AE
Measurable advantages: days between bag changes.
eufy HydroJet S2
Design differences: declared data server region: multiple regions.
This comparison points to the two product pages, where you'll find the complete data and the official links.