# Dreame L10s Ultra Gen 2 vs Dreame L40 Ultra Gen 2

As of Nov 4, 2026, the Dreame L10s Ultra Gen 2 costs $590 and the Dreame L40 Ultra Gen 2 costs $750, so the Dreame L10s Ultra Gen 2 is $160 cheaper. The Dreame L10s Ultra Gen 2 has a published review score and ranks #14 in our robot vacuums ranking; the Dreame L40 Ultra Gen 2 is not scored yet. Pick the Dreame L10s Ultra Gen 2 for budget buyers who want a full auto dock. Pick the Dreame L40 Ultra Gen 2 for tidy hard floor homes that want strong mopping.

Prices checked Nov 4, 2026. HTML version: https://robotsforthat.com/vs/dreame-l10s-ultra-gen-2-vs-dreame-l40-ultra-gen-2/

## Side by side

| | Dreame L10s Ultra Gen 2 | Dreame L40 Ultra Gen 2 |
|---|---|---|
| Price | $590 | $750 |
| 3 year cost | $680 | $790 |
| Our score | 7.8/10 | Not scored yet |
| Rank in Floors | #14 | #70 |
| Status | on sale | on sale |
| Warranty | 3 years (Dreame US store) | 3 years (Dreame US store) |
| Suction | 10,000 Pa claimed with four to five levels (Dreame, Stuff); no lab suction measurement found | 25,000 Pa claimed (Dreame); Vacuum Wars measured 0.79 kPa bench suction against a 0.99 kPa average, and Vacuum Chef measured 11.5 CFM airflow against a 9.0 average |
| Navigation | Top mounted LiDAR (Stuff); Tom's Guide found its AI routing unpredictable and incomplete in coverage | LDS LiDAR, up to 4 maps (Dreame); Vacuum Wars measured 0.84 m2 per minute, faster than its 0.72 average |
| Obstacle avoidance | 3DAdapt and Smart Pathfinder claimed (Dreame); Tom's Guide saw it often bump walls and larger objects | 3D structured light only; the RGB camera of the original L40 Ultra was removed (Dreame, Vacuum Wars); Vacuum Wars saw it avoid 2 of 24 objects and Vacuum Chef scored 30% |
| Mopping | Twin spinning pads with MopExtend edge reach, 32 wetness levels and 10.5 mm mop lift (Dreame, Tom's Guide); Stuff needed extra passes for tomato sauce | Dual spinning mops, 10.5 mm lift, 4 cm extension, no auto removal (Dreame); Vacuum Wars scored dried stains 144 against a 108 average |
| Self empty | Yes, 3.2 L dust bag, 75 days claimed (Vacuum Wars spec page); Tom's Guide and Stuff say about two months in use | Yes, 3.2 L dust bag, up to 100 days (Dreame) |
| Dock features | Auto empty, mop washing, auto detergent dispensing, clean and dirty water tanks (Tom's Guide, Stuff) | Auto empty, mop wash, hot air drying, auto water refill, 4.5 L clean and 4.0 L dirty tanks; detergent dispenser sold separately for $39.99 (Dreame). Dreame lists hot water mop cleaning, but Vacuum Wars says Gen 2 washes with room temperature water |
| Runtime | Up to 240 min in Quiet mode (Dreame lab data) | Up to 231 min in quiet vacuum mode, up to 1,679 sq ft (Dreame); Vacuum Wars estimated about 1,290 sq ft per charge |
| Dustbin | 300 ml robot bin (Dreame) | 250 ml robot bin plus 3.2 L dock bag (Dreame) |
| Height | 3.83 in (97.2 mm) (Dreame); Stuff notes the LiDAR knob blocks low furniture | 3.82 in (97 mm) (Dreame) |
| Pet hair | Tom's Guide scored pet hair pickup 70% on hardwood and 80% on carpet | Vacuum Wars measured 69% flattened pet hair pickup and 67% hair wrap on its 7 in hair test; carpet sand removal was 90% |
| App | Dreame app with no go zones and CleanGenius auto settings; works with Alexa, Google Home and Siri (Tom's Guide) | Dreamehome app with Alexa, Siri, Google Home and Apple Watch; Matter planned in an update (Dreame) |
| Threshold | 2 cm claimed (Dreame); Tom's Guide saw it struggle with a 1.4 cm threshold before crossing | 0.79 in (2 cm) (Dreame) |
| Noise | Not measured; Tom's Guide found it fairly quiet but noisy on harder debris | Vacuum Chef measured 73 dB at max suction, about average |
| Best for | budget buyers who want a full auto dock | tidy hard floor homes that want strong mopping |
| Skip if | your floors are cluttered or you need precise edge cleaning | you have pets with long hair or a cluttered floor |

## What reviewers found

### Dreame L10s Ultra Gen 2

- Tom's Guide: Scored 85% overall pickup: Cheerios 80% on hardwood and 90% on carpet, kitty litter 95% on both, pet hair 70% on hardwood and 80% on carpet. Bumped into walls and large objects and CleanGenius mistook wood grain for stains. [Source](https://www.tomsguide.com/home/smart-home/i-tested-the-dreame-l10s-ultra-gen-2-robot-vacuum-and-mop-and-its-one-of-the-best-values-yet)
- Stuff (South Africa) (8.5/10): Reliable LiDAR navigation and low maintenance, never needed a mid clean recharge in a small flat. Tomato sauce stains needed extra passes and the top knob blocked low furniture. Subscores Design 8, Performance 9, Features 9, Value 8. [Source](https://stuff.co.za/2025/08/22/dreame-l10s-ultra-gen-2-robot-vacuum-review/)

### Dreame L40 Ultra Gen 2

- Vacuum Wars (3.11 Vacuum Wars stars): Dried stain score 144 (108 average), 90% carpet sand removal, but 69% pet hair pickup, 67% hair wrap and only 2 of 24 obstacles avoided. Estimated about 1,290 sq ft per charge. [Source](https://vacuumwars.com/dreame-l40-ultra-gen-2-review/)
- Vacuum Chef: Measured 11.5 CFM airflow, 90% coffee, 60% sand and 98% cat litter pickup, 73 dB at max and a 30% obstacle avoidance score against a 66% average. Called it a rebalancing rather than an upgrade. [Source](https://vacuumchef.com/?p=12466)

## Questions buyers ask

### Which is better, the Dreame L10s Ultra Gen 2 or the Dreame L40 Ultra Gen 2?

The Dreame L10s Ultra Gen 2 has a published review score and ranks #14 in our robot vacuums ranking; the Dreame L40 Ultra Gen 2 is not scored yet. Pick the Dreame L10s Ultra Gen 2 for budget buyers who want a full auto dock. Pick the Dreame L40 Ultra Gen 2 for tidy hard floor homes that want strong mopping.

### Which is cheaper?

The Dreame L10s Ultra Gen 2 at $590, versus $750 for the Dreame L40 Ultra Gen 2, checked Nov 4, 2026. Over 3 years with running costs: $680 vs $790.

### What is the difference between the L10s Ultra Gen 2 and the L40 Ultra Gen 2?

Suction: 10,000 Pa claimed with four to five levels (Dreame, Stuff); no lab suction measurement… on the L10s Ultra Gen 2, 25,000 Pa claimed (Dreame); Vacuum Wars measured 0.79 kPa bench suction against a 0.99… on the L40 Ultra Gen 2. Navigation: Top mounted LiDAR (Stuff); Tom's Guide found its AI routing unpredictable and incomplete… on the L10s Ultra Gen 2, LDS LiDAR, up to 4 maps (Dreame); Vacuum Wars measured 0.84 m2 per minute, faster than… on the L40 Ultra Gen 2. Obstacle avoidance: 3DAdapt and Smart Pathfinder claimed (Dreame); Tom's Guide saw it often bump walls and… on the L10s Ultra Gen 2, 3D structured light only; the RGB camera of the original L40 Ultra was removed (Dreame… on the L40 Ultra Gen 2.

Full reviews: [Dreame L10s Ultra Gen 2](https://robotsforthat.com/robot/dreame-l10s-ultra-gen-2/index.md), [Dreame L40 Ultra Gen 2](https://robotsforthat.com/robot/dreame-l40-ultra-gen-2/index.md)