Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Dreame - L40 Ultra | Roborock - Qrevo Master |
|---|---|---|
| Battery life | 200 min | 180 min |
| Suction | 11000 Pa | 10000 Pa |
| Water tank | 260 ml | 250 ml |
| Noise | 65 dB | 64 dB |
Between the L40 Ultra and Qrevo Master, the L40 Ultra comes out ahead in battery life / suction, while the Qrevo Master wins on noise. Overall, the L40 Ultra scores 82.9 and the Qrevo Master scores 81.3 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (82.9 vs 81.3). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the L40 Ultra if you care most about battery life / suction. The biggest gaps in its favor are battery life, suction, water tank. The single most decisive one: Battery life — 11.11% more. 200 min vs 180 min.
Pick the Qrevo Master if you care most about noise. Its strongest claims are noise. The single most decisive one: Noise — 1.00 dB less. 64 vs 65.
Both ship with comparable mopping, lidar, self-empty base, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Dreame - L40 Ultra or Roborock - Qrevo Master?
Dreame - L40 Ultra leads the current Mars Score by 1.6 points.The more useful decision is the trade-off behind that result: compare suction, battery life against the way you will actually use the product.
Choose Dreame - L40 Ultra if…
Dreame - L40 Ultra has the measurable edge on battery life min, suction pa, water tank capacity ml.
Choose Roborock - Qrevo Master if…
Roborock - Qrevo Master has the measurable edge on noise db.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Dreame - L40 Ultra wins
- ▲Battery life — 11.11% more. 200 min vs 180 min.
- ▲Suction — 10.00% more. 11000 Pa vs 10000 Pa.
- ▲Water tank — 4.00% more. 260 ml vs 250 ml.
Why Roborock - Qrevo Master wins
- ▲Noise — 1.00 dB less. 64 vs 65.
Spec comparison
Cleaning
| Spec | Dreame - L40 Ultra | Roborock - Qrevo Master |
|---|---|---|
| Suction | 11000 Palead | 10000 Pa |
| Mopping | true | true |
| Water tank | 260 mllead | 250 ml |
| Dustbin | 320 mllead | 300 ml |
| Carpet detection | true | true |
Navigation
| Spec | Dreame - L40 Ultra | Roborock - Qrevo Master |
|---|---|---|
| Lidar | true | true |
| Camera navigation | true | true |
| AI obstacle avoidance | true | true |
| Max climb | 40 mmlead | 25 mm |
Autonomy
| Spec | Dreame - L40 Ultra | Roborock - Qrevo Master |
|---|---|---|
| Battery life | 200 minlead | 180 min |
| Self-empty base | true | true |
| Self-wash mop | true | true |
| Self-dry mop | true | true |
| Noise | 65 dB | 64 dBlead |
Frequently asked
Which has stronger suction, L40 Ultra or Qrevo Master?+
L40 Ultra delivers 11000 Pa vs 10000 Pa.
Do L40 Ultra or Qrevo Master mop?+
Both can mop.
Which has a self-emptying base, L40 Ultra or Qrevo Master?+
Both ship with a self-emptying base.