Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Dreame - L40 Ultra | Ecovacs - Deebot T30 Omni |
|---|---|---|
| Water tank | 260 ml | 210 ml |
| Battery life | 200 min | 180 min |
| Noise | 65 dB | 63 dB |
Between the L40 Ultra and Deebot T30 Omni, the L40 Ultra comes out ahead in water tank / battery life, while the Deebot T30 Omni wins on noise. Overall, the L40 Ultra scores 82.9 and the Deebot T30 Omni scores 81.9 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (82.9 vs 81.9). 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 water tank / battery life. The biggest gaps in its favor are water tank, battery life. The single most decisive one: Water tank — 23.81% more. 260 ml vs 210 ml.
Pick the Deebot T30 Omni if you care most about noise. Its strongest claims are noise. The single most decisive one: Noise — 2.00 dB less. 63 vs 65.
Both ship with comparable suction, mopping, lidar, 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 Ecovacs - Deebot T30 Omni?
Dreame - L40 Ultra leads the current Mars Score by 1.0 points.The more useful decision is the trade-off behind that result: compare battery life against the way you will actually use the product.
Choose Dreame - L40 Ultra if…
Dreame - L40 Ultra has the measurable edge on water tank capacity ml, battery life min.
Choose Ecovacs - Deebot T30 Omni if…
Ecovacs - Deebot T30 Omni 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
- ▲Water tank — 23.81% more. 260 ml vs 210 ml.
- ▲Battery life — 11.11% more. 200 min vs 180 min.
Why Ecovacs - Deebot T30 Omni wins
- ▲Noise — 2.00 dB less. 63 vs 65.
Spec comparison
Cleaning
| Spec | Dreame - L40 Ultra | Ecovacs - Deebot T30 Omni |
|---|---|---|
| Suction | 11000 Pa | 11000 Pa |
| Mopping | true | true |
| Water tank | 260 mllead | 210 ml |
| Dustbin | 320 ml | 420 mllead |
| Carpet detection | true | true |
Navigation
| Spec | Dreame - L40 Ultra | Ecovacs - Deebot T30 Omni |
|---|---|---|
| Lidar | true | true |
| Camera navigation | true | true |
| AI obstacle avoidance | true | true |
| Max climb | 40 mmlead | 22 mm |
Autonomy
| Spec | Dreame - L40 Ultra | Ecovacs - Deebot T30 Omni |
|---|---|---|
| Battery life | 200 minlead | 180 min |
| Self-empty base | true | true |
| Self-wash mop | true | true |
| Self-dry mop | true | true |
| Noise | 65 dB | 63 dBlead |
Frequently asked
Which has stronger suction, L40 Ultra or Deebot T30 Omni?+
Deebot T30 Omni delivers 11000 Pa vs 11000 Pa.
Do L40 Ultra or Deebot T30 Omni mop?+
Both can mop.
Which has a self-emptying base, L40 Ultra or Deebot T30 Omni?+
Both ship with a self-emptying base.