# Dreame L40 Ultra Gen 2 vs Roborock Qrevo 2 Pro

As of Oct 31, 2026, the Dreame L40 Ultra Gen 2 costs $570 and the Roborock Qrevo 2 Pro costs $550, so the Roborock Qrevo 2 Pro is $20 cheaper. The Roborock Qrevo 2 Pro has a published review score and ranks #18 in our robot vacuums ranking; the Dreame L40 Ultra Gen 2 is not scored yet. Pick the Dreame L40 Ultra Gen 2 for tidy hard floor homes that want strong mopping. Pick the Roborock Qrevo 2 Pro for hard floor homes on a midrange budget.

Prices checked Oct 31, 2026. HTML version: https://robotsforthat.com/vs/dreame-l40-ultra-gen-2-vs-roborock-qrevo-2-pro/

## Side by side

| | Dreame L40 Ultra Gen 2 | Roborock Qrevo 2 Pro |
|---|---|---|
| Price | $570 | $550 |
| 3 year cost | $610 | $550 |
| Our score | Not scored yet | 7.0/10 |
| Rank in Floors | #58 | #18 |
| Status | on sale | on sale |
| Warranty | 3 years (Dreame US store) | 1 year (Roborock US store) |
| Suction | 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 | 20,000 Pa (Roborock store page); Tom's Guide listed 25,000 Pa in its review specs |
| Navigation | LDS LiDAR, up to 4 maps (Dreame); Vacuum Wars measured 0.84 m2 per minute, faster than its 0.72 average | PreciSense LiDAR on top of the robot (Roborock); Tom's Guide mapped four rooms in about 10 minutes |
| Obstacle avoidance | 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% | Structured light Reactive Tech, no camera (Roborock); Gizmodo saw it swallow micro USB cables and a sock, TechRadar saw it avoid a shoe and sock but snag a USB cable |
| Mopping | Dual spinning mops, 10.5 mm lift, 4 cm extension, no auto removal (Dreame); Vacuum Wars scored dried stains 144 against a 108 average | Dual spinning mops with FlexiArm edge reach, auto mop removal for carpet, 0.591 in mop lift (Roborock); Tom's Guide saw soy sauce, mayonnaise and mud cleared in two passes |
| Self empty | Yes, 3.2 L dust bag, up to 100 days (Dreame) | Yes, self sealing dust bag, up to 65 days (Roborock); Tom's Guide lists a 2.7 L dock bag |
| Dock features | 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 | Mop wash up to 149°F, 113°F warm air drying, 4 L clean water refill, removable base (Roborock); Tom's Guide cited 167°F wash |
| Runtime | 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 | Tom's Guide lists 253 min and a 6,400 mAh battery; Gizmodo cleaned 750 sq ft in just under two hours with a little over 50% left |
| Dustbin | 250 ml robot bin plus 3.2 L dock bag (Dreame) | 11.8 fl oz robot bin (Tom's Guide) |
| Height | 3.82 in (97 mm) (Dreame) | 3.80 in (Roborock) |
| Pet hair | Vacuum Wars measured 69% flattened pet hair pickup and 67% hair wrap on its 7 in hair test; carpet sand removal was 90% | Tom's Guide measured 60% of hair picked up on hardwood and 48% on carpet |
| App | Dreamehome app with Alexa, Siri, Google Home and Apple Watch; Matter planned in an update (Dreame) | Roborock app with SmartPlan 3.0; works with Alexa, Siri, Google Home and Matter (Roborock); TechRadar found custom room names unreliable by voice |
| Threshold | 0.79 in (2 cm) (Dreame) | Not listed by Roborock; TechRadar says it handles regular doorways but not high thresholds |
| Noise | Vacuum Chef measured 73 dB at max suction, about average | TechRadar measured about 60 dB on carpet and 69 dB peak during dock emptying; Roborock lists 45 dB drying noise |
| Best for | tidy hard floor homes that want strong mopping | hard floor homes on a midrange budget |
| Skip if | you have pets with long hair or a cluttered floor | you have cluttered floors or lots of carpet hair |

## What reviewers found

### 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)

### Roborock Qrevo 2 Pro

- Tom's Guide: Picked up 92.5% of cereal and 60% of hair on hardwood, but only 76.5% of cereal, 51% of flaxseed and 48% of hair on carpet. Mopping cleared soy sauce, mayonnaise and mud in two passes. It bumped furniture with some force. [Source](https://www.tomsguide.com/home/roborock-qrevo-2-pro-review)
- TechRadar: About 60 dB on carpet and 69 dB peak when emptying. Mopping was excellent on max settings, it avoided a shoe and sock but got caught on a USB cable. Subscores: Value 5/5, Design 4/5, Performance 4.5/5, App 5/5. [Source](https://www.techradar.com/home/robot-vacuums/roborock-qrevo-2-pro-review)
- Gizmodo (3.5/5): Cleaned a 750 sq ft apartment in just under two hours with over 50% battery left. It swept up micro USB cables and a child's sock, and the test unit needed a fix for a loose part under the brush. [Source](https://gizmodo.com/roborock-qrevo-2-pro-a-midrange-robovac-that-will-eat-your-cables-2000802293)

## Questions buyers ask

### Which is better, the Dreame L40 Ultra Gen 2 or the Roborock Qrevo 2 Pro?

The Roborock Qrevo 2 Pro has a published review score and ranks #18 in our robot vacuums ranking; the Dreame L40 Ultra Gen 2 is not scored yet. Pick the Dreame L40 Ultra Gen 2 for tidy hard floor homes that want strong mopping. Pick the Roborock Qrevo 2 Pro for hard floor homes on a midrange budget.

### Which is cheaper?

The Roborock Qrevo 2 Pro at $550, versus $570 for the Dreame L40 Ultra Gen 2, checked Oct 31, 2026. Over 3 years with running costs: $610 vs $550.

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

Suction: 25,000 Pa claimed (Dreame); Vacuum Wars measured 0.79 kPa bench suction against a 0.99… on the L40 Ultra Gen 2, 20,000 Pa (Roborock store page); Tom's Guide listed 25,000 Pa in its review specs on the Qrevo 2 Pro. Navigation: LDS LiDAR, up to 4 maps (Dreame); Vacuum Wars measured 0.84 m2 per minute, faster than… on the L40 Ultra Gen 2, PreciSense LiDAR on top of the robot (Roborock); Tom's Guide mapped four rooms in about… on the Qrevo 2 Pro. Obstacle avoidance: 3D structured light only; the RGB camera of the original L40 Ultra was removed (Dreame… on the L40 Ultra Gen 2, Structured light Reactive Tech, no camera (Roborock); Gizmodo saw it swallow micro USB… on the Qrevo 2 Pro.

Full reviews: [Dreame L40 Ultra Gen 2](https://robotsforthat.com/robot/dreame-l40-ultra-gen-2/index.md), [Roborock Qrevo 2 Pro](https://robotsforthat.com/robot/roborock-qrevo-2-pro/index.md)