# Dreame D20 Plus vs Dreame L40s Ultra CE

As of Oct 31, 2026, the Dreame D20 Plus costs $310 and the Dreame L40s Ultra CE costs $470, so the Dreame D20 Plus is $160 cheaper. The Dreame D20 Plus has a published review score and ranks #1 in our robot vacuums ranking; the Dreame L40s Ultra CE is not scored yet. Pick the Dreame D20 Plus for pet owners with carpet on a budget. Pick the Dreame L40s Ultra CE for first time buyers who want a full dock cheaply.

Prices checked Oct 31, 2026. HTML version: https://robotsforthat.com/vs/dreame-d20-plus-vs-dreame-l40s-ultra-ce/

## Side by side

| | Dreame D20 Plus | Dreame L40s Ultra CE |
|---|---|---|
| Price | $310 | $470 |
| 3 year cost | $358 | $510 |
| Our score | 9.5/10 | Not scored yet |
| Rank in Floors | #1 | #53 |
| Status | on sale | on sale |
| Warranty | 3 years (Dreame US store) | 3 years (Dreame US store) |
| Suction | 13,000 Pa with five levels (Dreame); Vacuum Wars measured 0.53 kPa sealed suction against a 0.99 kPa average but 18 CFM airflow, above average | 13,000 Pa on the Dreame product page and comparison blog |
| Navigation | LDS LiDAR with multi floor maps, room selection and virtual barriers (Vacuum Wars) | LDS LiDAR with Smart Pathfinder (Dreame); Vacuum Wars measured 0.73 m2 per minute |
| Obstacle avoidance | No small object avoidance; Vacuum Wars recorded 0 of 24 obstacles avoided | Single laser 3DAdapt structured light, no camera (Dreame); Vacuum Wars saw it avoid 8 of 24 objects |
| Mopping | Yes, detachable flat pad with a 350 ml tank and 32 water levels; no mop lift (Dreame, Vacuum Wars) | Dual spinning mops with RoboSwing, 10.5 mm lift, no extension or auto removal (Dreame); Vacuum Wars measured 2.20 g water left, the most of the L40s range |
| Self empty | Yes, 5 L bag, up to 150 days per bag (Dreame) | Yes, 3.2 L dust bag, up to 100 days (Dreame) |
| Dock features | Auto empty and charging only; no mop washing, drying or water refill (Vacuum Wars) | Auto empty, cool water mop wash, warm air drying, auto water refill, 4.5 L clean and 4 L used tanks; auto detergent dosing is a $39.99 add on (Dreame) |
| Runtime | Dreame lists 285 min in its lab test; Vacuum Wars got 48 min in a vacuum and mop run but estimated about 2,761 sq ft of coverage per charge | Up to 260 min in quiet vacuum mode from 5,200 mAh (Dreame); Vacuum Wars estimated about 1,922 sq ft per charge |
| Dustbin | 500 ml robot bin plus 5 L dock bag (Dreame) | 300 ml or more plus 3.2 L dock bag (Dreame) |
| Height | 3.8 in (robot 13.8 x 13.8 x 3.8 in, Dreame) | 104 mm (about 4.1 in) (Dreame) |
| Pet hair | Vacuum Wars measured 91% flattened pet hair pickup against an 82.2% average and 0% long hair wrap | TriCut Brush 3.0 (Dreame); Vacuum Wars measured 68% pet hair pickup, 89% carpet sand removal and 0% hair wrap |
| App | Dreamehome app with room settings, no mop zones, auto empty frequency and carpet boost; works with Alexa, Siri and Google Home (Dreame, Vacuum Wars) | Dreamehome app with Alexa, Siri and Google Home through third party devices, no built in voice (Dreame) |
| Threshold | Not published; Dreame's spec table lists 0.79 in under obstacle avoidance without explaining it | 20 mm (Dreame product page); Dreame's comparison blog lists 22 mm in one section and 20 mm in another |
| Noise | Vacuum Chef measured about 74 dB at max suction | n/a |
| Best for | pet owners with carpet on a budget | first time buyers who want a full dock cheaply |
| Skip if | your floors are cluttered with cables and small objects | you have pets, clutter or want hot water mop washing |

## What reviewers found

### Dreame D20 Plus

- Vacuum Wars (2.90 Vacuum Wars stars): Removed 93% of embedded sand and 91% of flattened pet hair with 0% long hair wrap, and estimated about 2,761 sq ft per charge. It avoided 0 of 24 obstacles, crevice pickup was below average and mopping scored below average on dried stains. [Source](https://vacuumwars.com/dreame-d20-plus-review/)
- Vacuum Chef (95/100): Hands on review of a unit supplied by Dreame: strong cleaning on carpet, rugs and hard floors and good tangle resistance, but small or low objects were bumped and it reached about 74 dB at max suction. [Source](https://vacuumchef.com/dreame-d20-plus-robot-vacuum-and-mop-review-powerful-13000pa-suction-meets-smart-mid-range-value/)

### Dreame L40s Ultra CE

- Vacuum Wars (3.10 Vacuum Wars stars): 89% carpet sand removal, 68% pet hair pickup, 0% hair wrap, 8 of 24 obstacles avoided, about 1,922 sq ft per charge and 2.20 g of water left behind, the most of the three L40s models. Not in its Top 20. [Source](https://vacuumwars.com/dreame-l40s-series-review/)
- The Smart Home Hookup: Ranked it with the Mova P50 Ultra at the top for vacuuming among robots from the last three years and tied for first in mopping with the Narwal Flow. Noted the detergent dispenser is sold separately; listed $469.99 MSRP. [Source](https://www.thesmarthomehookup.com/?p=10269)

## Questions buyers ask

### Which is better, the Dreame D20 Plus or the Dreame L40s Ultra CE?

The Dreame D20 Plus has a published review score and ranks #1 in our robot vacuums ranking; the Dreame L40s Ultra CE is not scored yet. Pick the Dreame D20 Plus for pet owners with carpet on a budget. Pick the Dreame L40s Ultra CE for first time buyers who want a full dock cheaply.

### Which is cheaper?

The Dreame D20 Plus at $310, versus $470 for the Dreame L40s Ultra CE, checked Oct 31, 2026. Over 3 years with running costs: $358 vs $510.

### What is the difference between the D20 Plus and the L40s Ultra CE?

Suction: 13,000 Pa with five levels (Dreame); Vacuum Wars measured 0.53 kPa sealed suction… on the D20 Plus, 13,000 Pa on the Dreame product page and comparison blog on the L40s Ultra CE. Navigation: LDS LiDAR with multi floor maps, room selection and virtual barriers (Vacuum Wars) on the D20 Plus, LDS LiDAR with Smart Pathfinder (Dreame); Vacuum Wars measured 0.73 m2 per minute on the L40s Ultra CE. Obstacle avoidance: No small object avoidance; Vacuum Wars recorded 0 of 24 obstacles avoided on the D20 Plus, Single laser 3DAdapt structured light, no camera (Dreame); Vacuum Wars saw it avoid 8 of… on the L40s Ultra CE.

Full reviews: [Dreame D20 Plus](https://robotsforthat.com/robot/dreame-d20-plus/index.md), [Dreame L40s Ultra CE](https://robotsforthat.com/robot/dreame-l40s-ultra-ce/index.md)