Dreame
Comparison · 2 robots
Dreame D30 Ultra Robot Vacuum · iRobot Roomba Plus 515 Combo
All robot vacuums. Every measure below is plotted against the full class, so a difference can be read against how much the class itself varies.
- Dreame D30 Ultra Robot Vacuum
- iRobot Roomba Plus 515 Combo
iRobot
iRobot Roomba Plus 515 Combo
- Autonomy
- IIIConditional Autonomy
- Score
- Not scored
- Readiness
- New to Market
- Price
- $699.99list
Up to three
01 Classification
What each one does on its own.
The Autonomy Ladder is the same five rungs for every robot on the site. A rung describes the conditions a robot handles without you, not how good it is.
V
Generalized
Any task, any setting
IV
Environmental
Handles new obstacles without help
III
Conditional
Finishes familiar jobs on its own
Dreame D30 Ultra Robot VacuumiRobot Roomba Plus 515 Combo
II
Assisted
Runs preset routines, needs rescue
I
Manual
One action, on command
02 Assessment
Where they actually differ.
The Robovations Score is nine inputs across three pillars, each weighted as shown and each scored so that more is better. A robot can lead on one and trail on another, which is the point of showing them apart. Cost of ownership and data handling are reported on each robot's own page and are never averaged into the score.
Capability
Task completion16% of score
Does it finish the job it is sold to do, unattended
70
- Dreame D30 Ultra Robot Vacuum70
18median 72 across 433 scored robots100
Not scored: iRobot Roomba Plus 515 Combo
Coverage and navigation10% of score
Does it work the whole area, and hold that between runs
65
- Dreame D30 Ultra Robot Vacuum65
0median 70 across 421 scored robots100
Not scored: iRobot Roomba Plus 515 Combo
Edge-case recovery10% of score
Does it recover from the failures its category presents
35
- Dreame D30 Ultra Robot Vacuum35
18median 52 across 320 scored robots100
Not scored: iRobot Roomba Plus 515 Combo
Operating envelope4% of score
How far conditions can vary before performance drops
40
- Dreame D30 Ultra Robot Vacuum40
28median 68 across 397 scored robots100
Not scored: iRobot Roomba Plus 515 Combo
Dependability
Field failure rate16% of score
Documented hardware failures per owner-year
29
- Dreame D30 Ultra Robot Vacuum29
6median 70 across 359 scored robots100
Not scored: iRobot Roomba Plus 515 Combo
Software stability14% of score
Whether updates fix more than they break
66
- Dreame D30 Ultra Robot Vacuum66
15median 65 across 342 scored robots100
Not scored: iRobot Roomba Plus 515 Combo
Support longevity10% of score
Committed parts, service and updates, with dates
45
- Dreame D30 Ultra Robot Vacuum45
0median 62 across 429 scored robots100
Not scored: iRobot Roomba Plus 515 Combo
Ownership burden
Routine maintenance12% of score
Hands-on time it asks for in normal operation
82
- Dreame D30 Ultra Robot Vacuum82
22median 67 across 434 scored robots100
Not scored: iRobot Roomba Plus 515 Combo
Consumables8% of score
Parts that must be bought to keep it working
55
- Dreame D30 Ultra Robot Vacuum55
8median 69 across 434 scored robots100
Not scored: iRobot Roomba Plus 515 Combo
03 Measured against the class
How far apart is a long way?
A number only means something next to the spread it sits in. Each track below is the real range across every classified robot in the class, with the median marked.
Price217 with a published figure
$539.99$699.99
- Dreame D30 Ultra Robot Vacuum$539.99
- iRobot Roomba Plus 515 Combo$699.99
$160median $799.99$2,599
Runtime187 with a published figure
230 min295 min
- Dreame D30 Ultra Robot Vacuum230 min
- iRobot Roomba Plus 515 Combo295 min
60 minmedian 180 min360 min
Weight191 with a published figure
8.6 lbs6.4 lbs
- Dreame D30 Ultra Robot Vacuum8.6 lbs
- iRobot Roomba Plus 515 Combo6.4 lbs
3.6 lbsmedian 8.4 lbs25 lbs
Height232 with a published figure
3.8 in3.3 in
- Dreame D30 Ultra Robot Vacuum3.8 in
- iRobot Roomba Plus 515 Combo3.3 in
2.6 inmedian 3.8 in7.8 in
Not compared, because fewer than two of these robots carry a published figure: Suction, Charge time, Noise.
04 Ownership
What the numbers leave out.
The trade-off
What each design gives up to be good at what it is good at.
Dreame D30 Ultra Robot Vacuum
Priced well below Dreame’s L60-series siblings with the same PowerDock-style automated upkeep, but launch-cycle coverage rated obstacle avoidance and mopping capability below the category average.
MopExtend reaches edges and corners other designs miss, in a product otherwise positioned as Dreame’s entry-level all-in-one model.
iRobot Roomba Plus 515 Combo
The dock takes over water, pads and debris for up to three months, but it stands far taller than the 3.29 in robot it serves and needs a fixed spot with power.
Suction is sold only as 3x the Plus 505, a relative claim with no pascal figure on iRobot’s own page.
Who each one is wrong for
Stated by the record itself. A robot being wrong for a household is a fact about fit, not a fault.
Dreame D30 Ultra Robot Vacuum
- Homes with frequent floor clutter
- Launch-cycle coverage rated obstacle avoidance notably below a tested-competitor average.
- Buyers wanting a deeply independently reviewed model
- No independent field review with bench test scores or a documented reliability record was located for this SKU.
- Buyers prioritizing the strongest mopping performance in Dreame's line
- Launch-cycle coverage rated mopping capability modestly below the category average, versus the more thoroughly tested L60-series siblings.
iRobot Roomba Plus 515 Combo
- Large homes beyond 2,000 square feet per run
- iRobot rates coverage at 2,000 sq ft per charge and has not documented recharge-and-resume behavior for larger floor plans on this model.
- Deep or high-pile carpet
- Pads lift only 10 mm on carpet detection, and no independent carpet test of this model has been published to show how it handles dense pile.
- Buyers who want detergent dosed automatically
- The dock does not add cleaning solution itself; iRobot directs owners to add a compatible solution to the tank by hand.
- Buyers waiting for independent performance testing
- Launch coverage from Vacuum Wars and Reviewed contains no test results, so every suction, runtime and coverage figure today is iRobot's own.
What stays your job
The upkeep ownership hands back to you, whatever the autonomy level says.
Dreame D30 Ultra Robot Vacuum
- After every use: Empty and rinse the used water tank after mopping runs; the manual’s stated interval is after each use.
- Weekly: Remove tangled hair from the main brush and side brush and rinse the dust box filter; the manual’s stated minimum for each is every two weeks.
- Weekly: Rinse the clean water tank and mop pad holders; the manual’s stated minimum is every two weeks.
- Monthly: Wipe the laser distance sensor, cliff and carpet sensors, bumper, charging contacts, auto-empty vents, and the PowerDock’s signaling area with a dry cloth (the manual’s stated interval), and rinse the washboard filter (manual: every 1 to 2 months).
- Every 3-6 months: Replace the dust box filter and side brush, per the manual’s replacement table.
- Annually: Replace the main brush (manual: every 6 to 12 months).
- As needed: Replace the PowerDock’s 3.2 L dust bag (manual: every 2 to 4 months; rated for up to approximately 100 days) and the mop pads (manual: every 1 to 3 months); Dreame’s official accessory kit bundles these parts for $89.99.
iRobot Roomba Plus 515 Combo
- Every 3-6 months: Empty the dock’s debris storage and dirty-water tank, and refill clean water, per iRobot’s up-to-three-month rating.
- As needed: Add a compatible cleaning solution to the tank by hand; the dock does not dose it.
- Weekly: Check the rubber and bristle main brush and side brush for hair.
- Monthly: Wipe the LiDAR window, cliff sensors and charging contacts.
- As needed: Replace DualClean pads, filters and brushes from iRobot’s Plus 515 accessory series as they wear.
05 Evidence
How much each of these is standing on.
Classifications rest on different depths of evidence. A pre-release assessment and a verified one are not the same kind of claim.
| Robot | Evidence status | Sources reviewed | Last assessed |
|---|---|---|---|
| Dreame D30 Ultra Robot Vacuum | Verified | 7 | Aug 2026 |
| iRobot Roomba Plus 515 Combo | Provisional | 4 | Sep 2026 |
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