Dreame D9IIIConditionalCompare

Released 2020.11Reassessed 2026.09.02Compare

Dreame D9

Name: Dreame D9
Brand: Dreame

LiDAR mapping matured the navigation floor six years ago. The drag-mop hybrid works but doesn't replace handwashing; you're buying autonomous vacuuming and accepting mopping as a bonus layer.

List price

$349.99

Released 2020.11Reassessed 2026.09.02

Autonomy Ladder

Why Level III.

One five-rung scale, every category, from acting only on command to working unsupervised anywhere.

VGeneralized AutonomyAny task, any setting. No consumer robot has reached it.
IVEnvironmental AutonomyCopes with everyday clutter and frees itself, shown by independent testing.
To reach Level IVIndependent testing shows it avoids ordinary obstacles before contact, copes without the space being cleared, and frees itself when stuck.
IIIConditional AutonomyThis robot

Dreame D9 finishes whole jobs in a space it already knows, and still needs a person at the edges.

Navigation and control

LiDAR SLAM navigation
Why this level
- LiDAR-based SLAM with standard sensors achieves room-by-room mapping and systematic coverage.
- Lacks dynamic re-planning for novel layout changes mid-task, capping the classification at Level III.
Autonomy dimension 50 / 100 · 2 independent sources reviewed, 6 from the maker
IIAssisted AutonomyRuns preset routines; stalls at anything new.
IManual AutomationOne action on command; no independent operation.

How we assign a level →

Behind the classification

Sources on file.

Provisional2 independent sources reviewed, 6 from the maker

Two to four independent sources reviewed. Gaps remain across source types. The word says how much we read. It is not a grade.

Independent sources reviewed2

Monitoring record2 sources

Sources behind the tracker entries following this robot.

From the maker, reviewed6

Manufacturer documentation1 source

Dreame D9 product page, manual, and specifications listing.

Dreame D9 Product PageDreame

Specification sources2 sources

Pages the published specifications were read from.

Monitoring record3 sources

Sources behind the tracker entries following this robot.

Our own recordNot counted

Longitudinal signal1 source

Ownership data spanning 2020-2026 tracking maintenance burden, failure patterns, and autonomy capability stability.

Robovations Longitudinal EvidenceRobovations

Also monitored, nothing listed yet

Owner reports

Reddit r/robotics, robot vacuum enthusiast forums, and Amazon customer reviews documenting mopping results on hard floors, suction on carpet, and consumable cadence.

Press & video reviews

Tech outlet reviews covering LiDAR reliability, dock design, and firmware stability across 2020-2024 lifecycle.

Firmware release notes

No public versioned firmware changelog is published for the D9; app-delivered updates are not documented per release.

How we evaluate evidence →

Human Readiness

Discontinued.

One question: what does buying this robot today walk you into? The state is computed from the record, and recomputed daily.

DiscontinuedThis robot

Dreame D9 is discontinued. Remaining listings are old stock at uncertain prices, which no buying-today tier describes.

Listings under Availability are shown for reference, not as a purchase path.

On the record

Released November 2020; since discontinued
No current new-stock listing confirmed
2 independent sources reviewed, 6 from the maker

The scale, for reference

Ready NowAssessed, with a clean record on file. A successor may be shipping; the page says so when it is.
New to MarketOn sale under 90 days; the ownership record is still forming.
WaitA successor is announced and has not shipped; re-read the decision when it arrives.
Known IssuesDocumented problems stand on the record; read the case before buying.

How we assess readiness →

Robovations Score

How this number was reached

60of 100

CapableAt or above 24% of the 456 robots we scoreand 20% of the 228 scored robot vacuums

DeficientLimitedCapableStrongExemplary

Measured on 8 of the 9 inputs10% not counted

Our assessment did not establish an independent source for edge-case recovery on this machine, so that input is left out of the score rather than guessed at, and the rest re-weighted to fill the space. A gap in what we have been able to verify is not evidence against the robot. Where a whole pillar has nothing measured, we publish no number at all.

What moved itpoints gained or lost against a typical robot

Carried by

Field failure rate91+3.4

Held back by

Routine maintenance24−5.3
Support longevity30−3.2
Consumables38−2.5

Capability40% of the score68What it does without you.

Task completion16% of the score70

Evidence

Modern Castle's review of the D9 itself credits up to 2,700 sq ft of vacuuming and over 2,000 sq ft of mopping coverage, with recharge and resume so that on a low battery it "can return to the dock, recharge, and return back to the last space it cleaned." The loop still closes by hand: the dock only charges, the mopping pads have to be washed after use, and the brushroll has to be pulled periodically to clear hair.

Coverage and navigation10% of the score75

Evidence

Modern Castle describes a retained digital map with named or colored zones that let you skip areas or send the D9 straight to one for a targeted cycle, and the same map is what lets recharge and resume put it back in the last space it cleaned. The reviewer's own summary calls it a cleaning robot with great coverage, and reports no missed regions across their in-home tests.

Edge-case recoverynot countedno source verified35

Evidence

There is no obstacle-avoidance sensor on this machine at all. The laser is the LDS mapping turret, and objects are found by bumper contact and infrared, so cords, socks and pet waste are met rather than recovered from. It halts and reports through the app, which keeps it above the bottom, but the clip-on drag pad cannot lift, so an unexcluded rug is soaked while it waits for a human.

Operating envelope4% of the score40

Evidence

Requires a constrained setting. Owner reports in the record document suction loss on shag and thick pile and a side brush that cannot recover carpet edges, the mop module must be removed by hand for carpet, a second floor means relocating the dock and remapping, and the floor has to be cleared first because nothing sees clutter.

Dependability40% of the score67Whether it keeps doing it.

Field failure rate16% of the score91

Evidence

Nearly six years in the field since November 2020 with no recall and no documented systemic defect, and duration without a documented pattern is what earns this number, not the fact that a cheap machine has fewer subsystems to fail. Held off the top of the scale and said plainly: the failure evidence is unlinked Reddit, forum and Amazon review text plus unlinked press reviews, and the record's longitudinal source is a pointer to a methodology page rather than data.

Software stability14% of the score65

Evidence

The machine is Wi-Fi connected and app-managed, so updates ship, but nothing about them can be attributed: the record states outright that Dreame publishes no versioned firmware changelog for the D9 and the firmware source carries zero items, so a behavior change cannot be tied to a version. Absence of a changelog is not stability, and it is not instability either. No owner reports an update breaking a working function on this model in six years. This is the silent record, scored as silent.

Support longevity10% of the score30

Evidence

Scored as commitments, and this is a discontinued 2020 line. The manufacturer warranty is long expired, no update commitment exists and no changelog is published, and there is no channel for the LDS turret or the drive assembly. It is not at the bottom because consumables remain priced and orderable in the record, mop pads at about $18 a set and filters at about $20, and the record credits continuing spare-parts availability.

Ownership burden20% of the score30What it asks of you.

Routine maintenance12% of the score24

Evidence

There is no dock automation of any kind. The 570 ml bin is small and is emptied by hand after each run, mopping means fitting the module, filling the tank, removing it and rinsing the pad each time, and on top of that sit weekly side-brush hair removal, quarterly pad washing, filter washing every three to six months, an annual dock connector check and sensor cleaning after heavy debris runs.

Consumables8% of the score38

Evidence

A poor cost-to-machine ratio, which is what the anchor asks about. Mop pads at about $18 a set quarterly and filters at about $20 every three to six months come to (priced by the consumables engine) against a machine selling for $150 to $350, so annual consumables run between 40 and 80 percent of the purchase price. There are no dust bags, but only because there is no auto-empty, so that earns nothing here.

middle half of the databaseits medianthis robot

Reported, not scoredneither measures how well the robot works

Five-year cost$890

Lower third for robot vacuums in absolute terms, and poor value in proportion: roughly $250 at current street pricing plus about $120 a year in pads and filters, with a battery likely inside five years. Consumables come to more than twice the purchase price across the period. No subscription.

Data postureCloud-linked

Account required. Maps and telemetry leave the home; core function survives an outage.

What leaves the homeNot documented

Read the full methodology →

FIT CHECK

Will the Dreame D9 work in your home?

Describe your home using the controls. Each choice reads the spec sheet for you, flagging where the Dreame D9 is built for your space and where it isn’t.

Home size

Primary floors

Mopping needs

Upkeep you accept

See every robot vacuum suited to these conditions

A classification of fit for the conditions you set, not a recommendation. Verdicts describe engineering design intent, not test results.

OWNERSHIP

Living with it.

Six-year firmware maturity steadied navigation; dock is the fragile component.

Stableowner-reported arc

The record so far

Owner reports show stable mapping over 24+ months; navigation regressions are rare post v2.0. Dock failures (auto-empty jams, filter seal cracks) appear in 15-20% of units by year two. Firmware updates are infrequent now, signaling platform stability.

What goes wrong4 documented · 0 self-recover

Common

Dust bag cloggingReduced suction, auto-empty blockage

Owner fixEmpty or replace bag; occurs every 20-60 days depending on home.

Occasional

Uneven edge coverage, possible motor strain

Owner fixManual removal every 2-4 weeks; spare brushes ~$25/pair.

Occasional

Dock connector corrosionCharging failures, intermittent docking

Owner fixContact cleaner and manual dock alignment; occurs year 2+ in humid homes.

Occasional

Reduced mopping wetting, dragging sound

Owner fixRinse pad after each cycle; replace every 3 months (~$18).

Upkeep routine

Each useEvery cycle

Empty the 570 ml onboard dustbin by hand; the D9 has no self-emptying station and no dust bag.

Weekly52×/yr

Side brush cleaning; pull hair tangles from bristles (no parts cost).

Seasonal4×/yr

Mop replacement or washing if used (~$18 per set).

Filter washing and occasional replacement (~$20 per ).

Yearly1×/yr

Dock connector inspection; contact cleaner for corrosion in humid climates.

As neededno fixed schedule

Wheel and sensor cleaning after heavy debris runs.

Cost over timeabout $102 past the sticker over three years

PurchaseRunning cost

Year 1

$383

Year 3

$451

Year 5

$519

$349 to buy, then about $34 a year for the replaceable parts below. Over three years that is roughly $102 past the sticker price. Excludes electricity and any repairs.

What you replace

Typical for robot vacuums: every 3-6 monthsWhere to buy Mop pad
Typical for robot vacuums: every 3-6 months

Replacement cadence from the maintenance schedule; prices shown where the source documents them. Some links earn Robovations a commission. It does not change any classification. All parts at Dreame

Step-by-step fixes

Auto-Empty Base Not Emptying?Won’t Return to Its Dock or Charge?Leaving Streaks When Mopping?All robot vacuum guides

Safety notes1 caution · 1 note

CautionPinch risk at dust bag drawerFingers can be caught opening/closing; keep away from unsupervised children under 8.
Dock power cord placementEnsure outlet is stable and away from pet chew zones; damaged cord exposed live terminals.

SPECIFICATION

The full spec sheet.

Priced below the category median, with every figure charted against the category below.

Dimensional drawing

Key specificationsManufacturer-publishedSources: Product page

FootprintThe width, depth and height of the robot itself, without its dock.: 13.8 in dia, 3.8 in tall•
WeightThe robot alone, without its dock, as the maker states it.: 6.6 lbs
BatteryStored energy in watt-hours; a larger pack runs longer, not harder.: 75 Wh · Li-ion•
Wi-FiThe bands the robot can join; many models need a 2.4 GHz network to set up.: 2.4 GHz only✓
VoiceThe assistants the maker's app links to; the robot itself does not listen.: Alexa, Google Home✓
Onboard dustbinThe bin inside the robot; an auto-empty dock moves its contents into a bag.: 570 mL•
Water tankThe clean-water tank that feeds the mop, on the robot or in the dock.: 270 mL•
DockWhat the base does besides charging: empty the bin, wash and dry pads, refill water.: Charge-only dock, no self-emptying
Threshold climbThe tallest lip the robot is rated to cross; a door sill is about 0.8 in.: 0.8 in•

Where it lands · position among 261 robot vacuumsThis robotMedianTypical range

SuctionAir pressure the fan produces at the intake, in pascals, measured the maker's own way.3,000Pamax mode

1,000 Pa42,000 Pa

Bottom of range

RuntimeThe maker's stated running time on one charge, at a standard setting.150min

60 min360 min

Near median

PriceThe maker's list price, not a price found in a shop.$349.99

$160$2,600

Bottom of range

NoiseLoudness at the maker's stated distance, in decibels; ten more decibels reads as about twice as loud.66dB

43 dB80 dB

Near median

Charge timeTime from empty to full on the dock, as the maker states it.300min

90 min420 min

Near median

WeightThe robot alone, without its dock, as the maker states it.6.6lbs

3.6 lbs25 lbs

Below median

Position shows where the figure sits across the tracked category, not a quality judgment. Suction in Pascals has no standard test method, and the published figure is a peak-mode claim, so it is comparable only within a brand and generation.

Official referencesProduct page

RECORD

How the assessment has moved.

Every announcement, release and reassessment behind the current classification.

Coming soon

Just launched

Active updates

Settled

Discontinued

Aug 2026 · AssessmentRobovations Score rescored under v4.2: 62 → 60
Jul 2026 · AssessmentRobovations Score recorded at 62 of 100
Mar 2024 · UpdateFirmware update adds offline mapping completion and zone refinements
Aug 2023 · NewsDreame consolidates D9 under Dreame Home app, retires Mi Home support
Nov 2020 · ReleaseLaunches globally with LiDAR SLAM at budget price point

Questions

What people actually ask.

5 answered

OperationDoes the D9 vacuum and mop in the same run?

Yes. The 270 ml electric water tank and the mop pad clip on as a single module, and the app’s cleaning mode selector offers sweeping only, mopping only, or sweeping and mopping together. There is no forced second run and no separate mopping cycle.

OperationWill the D9 work in a 3,000 sqft open-plan home?

Yes, with a limitation: runtime caps at 150 minutes on a single charge. Open-plan homes above 2,500 sqft may require the robot to return and recharge mid-cleaning. Owner reports confirm dock-return triggers roughly halfway through larger floorplans.

OperationHow often do I need to empty the dustbin?

The D9 has no self-emptying station. Debris collects in a 570 ml onboard bin that the owner empties by hand, and cadence tracks household load rather than a published interval. There is no dust bag and no bag consumable.

OperationCan the D9 map a home after I rearrange furniture?

The robot remembers the stored map. If you move walls or permanently block rooms, manual editing via app is required. Temporary obstacles (moved chairs) are treated as temporary no-go zones; the map doesn’t update permanently.

CompatibilityWhat happens to the mapping if the Wi-Fi drops?

The robot completes the current run using local SLAM memory but cannot push map updates or receive remote commands until the connection returns. Dreame publishes no versioned firmware changelog for the D9, so behavior changes cannot be attributed to a specific firmware version.

Availability

Where it's sold

Some links earn Robovations a commission. It does not change any classification. Affiliate disclosure.

We are no longer finding a current new-stock listing for this robot. Remaining offers may be used, refurbished, or third-party — confirm the condition and price on the retailer’s page before buying.

Amazon See current listings

Cite & Embed

Reference the Dreame D9 classification.

Embed the Autonomy Ladder™ mark or copy the citation. The mark is served from this record, so a reassessment updates it on your page automatically.

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Clear space 3222 on all sides

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Citation

Robovations. "Dreame D9: Autonomy Level III (Conditional Autonomy)." Autonomy Ladder™, assessed September 2026. https://robovations.com/robots/dreame-d9/

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A classification, not an endorsement. It may not appear beside language implying Robovations recommends, rates, or approves the product.

Where to next

Three ways to keep going.

For evaluators

Compare with a peer.

See the Dreame D9 and Dreame D10 Plus side by side: autonomy level, Robovations Score, readiness, and price. Classification, not a verdict.

See the full comparison

Or compare with SwitchBot K11+, SwitchBot K11+ Pro, Roborock Q7 M5+.

For browsers

See every Level III.

Every robot we’ve classified at conditional autonomy. Sorted by readiness, score, and price. Filter by category, manufacturer, or release date.

Browse every Level III robot

Updated weekly with new entries and reclassifications.

Dreame D9

Will the Dreame D9 work in your home?

Living with it.

The full spec sheet.

How the assessment has moved.

What people actually ask.

Dreame D9 in the analysis archive.

What happens to a robot vacuum when its maker shuts down the servers?

Does a steam robot vacuum steam your floor or just the mop?

How do robot vacuums detect carpet and switch cleaning modes?

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Where it's sold

Reference the Dreame D9 classification.

Three ways to keep going.

Get the next reassessment.

Compare with a peer.

See every Level III.