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- D20 Pro vs Robot Vacuum S40
Dreame D20 Pro vs Xiaomi Robot Vacuum S40
What D20 Pro does better (4) and where Robot Vacuum S40 wins (1) — every spec side by side.
vs
7.2Cleaning power7.5
5.8Navigation5.8
5.2Mopping4.2
8.0Battery6.2
Dimensions
Size comparison
D20 ProRobot Vacuum S40
| D20 Pro | Robot Vacuum S40 | Difference | |
|---|---|---|---|
| Height | 97 mm | 98 mm | −1 mm |
| Width / diameter | 350 mm | 340 mm | +10 mm |
| Length | 350 mm | 340 mm | +10 mm |
| Weight | 3.5 kg | 4.1 kg | −0.6 kg |
Drawn to the same scale from the official dimensions (front and side).
Why is D20 Pro better than Robot Vacuum S40?
- Runtime285 min vs 180 min+58%
- Suction power13,000 Pa vs 10,000 Pa+30%
- Dustbin (robot)700 ml vs 520 ml+35%
- Water tank (robot)350 ml vs 270 ml+30%
Why is Robot Vacuum S40 better than D20 Pro?
- Noise level76 dB vs 63 dB+21%
Specifications
Side by side
| Suction & cleaning | ||
| Suction power | 13,000 Pa | 10,000 Pa |
| Dustbin (robot) | 700 ml | 520 ml |
| Main brush | Dual main brushes | Single main brush |
| Anti-tangle brush | — | Yes |
| Side brushes | 1 | 1 |
| Extending side brush | Yes | — |
| Carpet detection | Yes | — |
| Noise level | 76 dB | 63 dB |
| Navigation & obstacles | ||
| Navigation | Laser (LiDAR) | Laser (LiDAR) |
| Navigation sensors | LiDAR laser (LDS), Cliff sensors, Ultrasonic sensor | LiDAR laser (LDS), Cliff sensors |
| Obstacle avoidance | Basic sensors (infrared / bumper) | Basic sensors (infrared / bumper) |
| Threshold climbing | 20 mm | 20 mm |
| No-go zones / virtual walls | Yes | Yes |
| Room mapping & room selection | Yes | Yes |
| Mopping | ||
| Mop type | Mop pad | Mop pad |
| Water tank (robot) | 350 ml | 270 ml |
| Base station | ||
| Base station | Charging dock | Charging dock |
| Auto-empty dust station | Yes | — |
| Dust bag (dock) | 5 l | — |
| Battery & runtime | ||
| Battery capacity | 5,200 mAh | 5,200 mAh |
| Runtime | 285 min | 180 min |
| Charging time | 360 min | 360 min |
| Recharge & resume | Yes | — |
| Size & weight | ||
| Width / diameter | 350 mm | 340 mm |
| Length | 350 mm | 340 mm |
| Height | 97 mm | 98 mm |
| Weight | 3.5 kg | 4.1 kg |
| Shape | Round | Round |
| Colours | White | White |
| App & smart home | ||
| App control | Yes | Yes |
| Voice assistants | Amazon Alexa, Google Assistant, Apple Siri | Amazon Alexa, Google Assistant |
