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- L40 Ultra AE vs Saros 20
Dreame L40 Ultra AE vs Roborock Saros 20
What L40 Ultra AE does better (3) and where Saros 20 wins (8) — every spec side by side.
vs
7.5Cleaning power8.9
7.6Navigation9.6
7.4Mopping8.4
8.2Base station5.4
6.8Battery9.5
Dimensions
Size comparison
L40 Ultra AESaros 20
| L40 Ultra AE | Saros 20 | Difference | |
|---|---|---|---|
| Height | 97 mm | 80 mm | +17 mm |
| Width / diameter | 350 mm | 353 mm | −3 mm |
| Length | 350 mm | 353 mm | −3 mm |
Drawn to the same scale from the official dimensions (front and side).
Why is L40 Ultra AE better than Saros 20?
- Dustbin (robot)395 ml vs 259 ml+53%
- Dust bag (dock)3.2 l vs 2.5 l+28%
- Clean water tank (dock)4.5 l vs 4 l+12%
Why is Saros 20 better than L40 Ultra AE?
- Suction power19,000 Pa vs 36,000 Pa+89%
- Threshold climbing20 mm vs 88 mm4.4×
- Mop lift height10.5 mm vs 35 mm3.3×
- Runtime180 min vs 200 min+11%
- Battery capacity5,200 mAh vs 6,400 mAh+23%
- Height97 mm vs 80 mm+21%
- Charging time210 min vs 150 min+40%
- Noise level74 dB vs 65 dB+14%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 19,000 Pa | 36,000 Pa |
| Dustbin (robot) | 395 ml | 259 ml |
| Main brush | Single main brush | Single main brush |
| Anti-tangle brush | — | Yes |
| Side brushes | 1 | 1 |
| Extending side brush | — | Yes |
| Carpet detection | Yes | Yes |
| Dirt detection | Yes | — |
| Noise level | 74 dB | 65 dB |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | Laser (LiDAR) |
| Navigation sensors | LiDAR laser (LDS), Wall sensor, Cliff sensors, Ultrasonic sensor | LiDAR laser (LDS), Wall sensor, Cliff sensors |
| Obstacle avoidance | AI camera | AI camera |
| Threshold climbing | 20 mm | 88 mm |
| No-go zones / virtual walls | Yes | Yes |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Mop type | Rotating mop pads | Rotating mop pads |
| Mop lifting on carpets | Yes | Yes |
| Mop lift height | 10.5 mm | 35 mm |
| Automatic mop removal | — | Yes |
| Extending mop (edges) | Yes | Yes |
| Water tank (robot) | — | 65 ml |
| Base station | ||
| Base station | All-in-one dock (empty + wash) | All-in-one dock (empty + wash) |
| Auto-empty dust station | Yes | Yes |
| Dust bag (dock) | 3.2 l | 2.5 l |
| Mop washing in the dock | Yes | Yes |
| Hot-water mop washing | Yes | Yes |
| Hot-air mop drying | Yes | Yes |
| Automatic water refill | Yes | Yes |
| Plumbed water connection | Yes | — |
| Clean water tank (dock) | 4.5 l | 4 l |
| Dirty water tank (dock) | 4 l | 3.5 l |
| Battery & runtime | ||
| Battery capacity | 5,200 mAh | 6,400 mAh |
| Runtime | 180 min | 200 min |
| Charging time | 210 min | 150 min |
| Cleaning area per charge | 168 m² | — |
| Recharge & resume | Yes | — |
| Size & weight | ||
| Width / diameter | 350 mm | 353 mm |
| Length | 350 mm | 353 mm |
| Height | 97 mm | 80 mm |
| Weight | 4 kg | — |
| Shape | Round | Round |
| Colours | Black | Black |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | Amazon Alexa, Google Assistant, Apple Siri | Amazon Alexa, Google Assistant, Apple Siri |
| Matter | — | Yes |
| Live camera view / video call | Yes | Yes |
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